HARRIS, J.
The foregoing statement may be summarized by saying that the defendant attempted to navi[179]*179gate the river at a time when, it was so foggy that one could not see ahead and the range lights ceased to he an aid to navigation; that the defendant left Bugby Hole with the intention of following the usual course taken by vessels across Puget Bar and past the Anderson trap; that the towboat and barges were successfully navigated across Puget Bar; that the river is between 2.000 feet and a mile wide, at the point where the Anderson trap is located; that between 500 and 4,000 feet of that width opposite the Anderson trap is sufficiently deep for the navigation of vessels; that the usual course followed by vessels is between 200 and 1.000 feet from the outer end of the Anderson trap; that instead of following the usual course, as the master of the “Samson” says he intended, the flotilla, because of some controverted reason, got out of the usual course of vessels at a point at least 1,800 feet, and probably more, above the Anderson trap and proceeded on down the river outside of the usual course, but in waters deep enough for the navigation of the towboat and barges to and through the Anderson trap.
1. It is appropriate here to add to what already has been said that the master of the “Samson” testified that he did not see the Brandt trap at all and that it was so foggy that he did not see the Anderson trap until he was about 100 feet from it. On the other hand, Christian Tholo testified that the fog lifted before the “Samson” reached the Anderson trap and that when the boat was “in front of the lower range light” (300 feet above the Anderson trap) it was ‘ ‘ swinging ’ ’ and that at that time he saw the light on the end of the Anderson trap. The witness Vog corroborated the testimony of Tholo by saying that after the flotilla went through the trap “I was looking around and I could see the shore, the house ashore and [180]*180the woods back of the house.” Anderson explained that his house was 600 feet below the front range light; and hence if his testimony is taken as true the trap, which was 300 feet below the range light, was 300 feet above the house. The “Samson” was displaying a red light on the port side and a green light on the starboard side as well as two white lights on the masthead as required by the regulations. There was a white light on the outside of each barge.' These lights, however, served to enable others to see the “Samson” rather than to enable the “Samson” to see othei objects. In addition to the lights already mentioned the “Samson” was equipped with both an arc and a search light. The master of the vessel stated that the searchlight is not used in foggy weather, for the reason that such a light hinders rather than aids navigation. Besides the master who was at the time of the accident at the “Samson’s” wheel there was a sailor on duty on the “Samson” as a lookout. There was a man on each barge but each of these three men was asleep.
As already stated, Captain Church testified that at the end of 11 minutes he slowed down and at the end of 12 or 13 minutes after leaving Bugby Hole he stopped the engines and drifted; but opposed to this evidence there was the testimony of Christian Tholo who told the jury that “when she passed me she had the speed that she usually had” and that after he saw the “Samson” she was going, so far as he could observe, “as she usually goes when it is clear.” There was testimony for the plaintiff to the effect that vessels either anchored or tied up in heavy fogs; but there was also evidence for the defendant to the effect that only loaded ocean-going vessels, whether with or without a tug, anchored and that towboats with barges never anchored or tied up on account of the fog. The [181]*181master of the “Samson” testified that if the towboat had been equipped with a stern-wheel he could have backed out after seeing the trap and thus avoided it, but since the boat was equipped with a propeller an attempt to back out at any time after he saw the Anderson trap would have resulted in the flotilla swinging around and striking the trap broadside and thus causing greater damage to the trap. He also stated that when he discovered his predicament he started the engines and went through the lead of the trap as straight as he could and by so doing did the least possible damage; and that if he had not done this the flotilla would have taken out the heart of the trap. It is apparent from this brief account of the evidence that the questions of whether or not the defendant negligently failed to maintain sufficient lights, or negligently failed to keep a lookout, or negligently failed to see and avoid the fish-trap, or negligently operated the flotilla at a dangerous rate of speed, or negligently failed to stop the “Samson” and her tow and avoid the fish-trap, were all properly submitted to the jury. There was evidence upon both sides of these controverted questions and it was therefore the province of the jury to determine the facts. The trial court did not commit error, as, contended by the defendant, in asking the jury to decide whether the corporation was negligent in respect to any of those five specifications of negligence.
Much of the discussion in the briefs relates to the allegation that the defendant “negligently failed to keep and maintain said tugboat within the limits” of the fixed channel and course in which vessels were usually operated. The defendant has urged numerous objections to the instructions given by the court, contending that some of them were erroneous and that [182]*182several of them were inconsistent with each other. The position taken by the defendant is rested largely upon the application which it contends should be made of the rule which gives paramountcy to the right of navigation.
2, 3. The Columbia Eiver is a navigable stream "and as such is a common highway “and forever free.” This right is a public one and it is not only given by the common law but is preserved by the statute admitting the State of Oregon into the Union: Johnson v. Jeldness, 85 Or. 657, 661 (167 Pac. 798, L. R. A. 1918A, 1074). The right of fishery is likewise a common right. The right of navigation is paramount, for the reason that it is of the most importance to the public weal: Davis v. Jerkins, 50 N. C. (5 Jones L.) 290, 293; Post v. Munn, 4 N. J. Law (7 Am. Dec. 570, 1 Southard’s Rep. 61); Flanagan v. City of Philadelphia, 42 Pa. St. 219, 228. Stated in general terms the right of fishery must give way to the right of navigation. Expressed in more accurate language the paramountcy of the right of navigation does not extinguish the right of fishery although the former does, whenever there is a necessary conflict, limit the latter and compel it to yield so far as the right of fishery interferes with the fair, useful and legitimate exercise of the right of navigation. Speaking of the abstract right of the public it may be said as expressed in 1 Farnham on Waters, Section 27:
“The public is entitled to the free, uninterrupted, and unobstructed use of every part of the stream, from bank to bank and throughout the length of the channel, which at the ordinary stage of the water is of such depth and of such accessibility with respect to the current or main body of the stream as to be capable of navigation by boats * * either up and down or across, or from the main stream on to any particular part in [183]*183question, or thence on to the. body of the stream; and ■this whether such part has ever been so used, and whether there is any present or anticipated necessity for so using it.” -
Continuing to employ general terms when referring to the right of navigation, in the abstract, a boat has a right to “take her course” and to go when and where it is necessary to go and is not obliged to stop or go out of her way or wait upon the movements of those who are managing a fishing seine or net; and yet this right of navigation which entitles the public to the unobstructed use of every part of the stream which is capable of navigation by boats and authorizes a boat to “take her course” cannot be exercised without regard to the rights of others. The navigator of a public stream must manage his craft with ordinary care and with due regard to the rights, property and lives of others: 1 Farnham on Waters, §§ 27, 31 and 33; Spry Lumber Co. v. The C. H. Green, 76 Mich. 320, 332 (43 N. W. 576). While a boat may “take her course” nevertheless a navigator cannot with impunity do unnecessary damage to a fisherman- or his property; but upon the contrary the paramount right of navigation must be exercised fairly, and not arbitrarily, and with due regard to the subordinate right of fishery and a boat must be so navigated as not to do unnecessary damage: 1 Farnham on Waters, § 33a; Gould on Waters (2 ed.), § 87; Porter v. Allen, 8 Ind. 1 (65 Am. Dec. 750); Lewis v. Keeling, 46 N. C. (1 Jones L.) 299, 307 (62 Am. Dec. 168); Post v. Munn, 4 N. J. Law (7 Am. Dec. 570, 1 Southard’s Rep. 61). For example, if nets are placed across the channel of a river so as to be a bar to navigation, a vessel may, if reasonably necessary to do so, run over the nets; but if a navigator is warned or ought to have [184]*184known of Ms approach toward the net of a fisherman, he is liable for damage resulting from his negligent failure to avoid doing damage if he can do so without , prejudice to the reasonable prosecution of his voyage: Horst v. Columbia Contract Co., 89 Or. 344, 350, 352 (174 Pac. 161); Hopkins v. Norfolk & S. R. Co., 131 N. C. 463 (42 S. E. 902); Cobb v. Bennett, 75 Pa. St. 326, 329 (15 Am. Rep. 752); Wright v. Mulvaney, 78 Wis. 89 (46 N. W. 1045, 23 Am. St. Rep. 393, 9 L. R. A. 807). The ruling in Wright v. Mulvaney is of peculiar interest, for the reason that there as here a pound net fish-trap was injured by a bqat with a tow and some of the other material particulars were like the facts presented here. The court says:
“But it does not necessarily result from this (the paramount right of navigation) that the navigator may carelessly and negligently run- his vessel upon the nets of fishermen and destroy them, and escape liability therefor merely because he did not do so maliciously or wantonly. Such a proposition shocks any proper sense of justice. The benefit which the navigator is entitled to claim by reason of his paramount right is, we apprehend, that when the two rights necessarily conflict the inferior must yield to the superior right. But he may not by his own negligence unnecessarily force the two rights intq conflict, and then claim the benefit of the paramount right.”
4. When it is said that the public is entitled to navigate upon any part of the navigable waters of a stream without obstruction it must always be understood that reference is made to unlawful and not lawful obstructions. An obstruction placed in a stream may be authorized by competent authority and consequently the ' right of navigation is limited by that kind of an obstruction : Gould on Waters (2 ed.), § 87; Davis v. Jerkins, 50 N. C. (5 Jones L.) 290, 293; Flanagan v. City [185]*185of Philadelphia, 42 Pa. St. 219, 232; Lewis v. Keeling, 46 N. C. (1 Jones L.) 299, 306 (62 Am. Dec. 168); Pound v. Turck, 95 U. S. 459 (24 L. Ed. 525, see, also, Rose’s U. S. Notes). If authority is granted for tire erection of an obstruction in a navigable stream and the obstruction is so placed as to be partly beyond the limits of the authorization, then in that event the obstruction is unlawful and a nuisance only to the extent that the authority has been exceeded: Knox v. Chaloner, 42 Me. 150, 156; Renwick v. Morris, 3 Hill (N. Y.), 621, affirmed in 7 Hill (N. Y.), 575. Even though an obstruction is wholly or partially unauthorized, nevertheless this lack of authority for the erection or maintenance of the obstruction does not necessarily operate as authority to a navigator negligently to destroy the obstruction: 1 Farnham on Waters, § 33; Dimes v. Petley, 15 Q. B. 276 (19 L. J. Q. B., N. S., 449, 14 Jur. 1132); The Brinton, 66 Fed. 71 (13 C. C. A. 331).
5, 6. We may now direct attention to some of the instructions which the court gave to the jury. After defining negligence” and explaining that the plaintiff could recover if the defendant was and he himself was not guilty of negligence the court told the jury, in instruction No. 3, that “it is charged” in the complaint “that at said time the said boat was being operated outside of and beyond the channel or course in which such vessels should be operated”; and then follows an enumeration of the remaining five specifications of negligence. Having referred to the first specification of negligence in the language already quoted and having enumerated the other five specifications the court, in instruction No. 4, then said: '
If you find the defendant was “guilty of any one or more of said charges, and if you so find that any one [186]*186or more of said charges which you may so find defendant guilty of constituted negligence or lack of due care” and that such acts caused the injury then “plaintiff is entitled to a verdict” unless his own negligence contributed to the injury.
The jury was properly told, in instruction No. 5:
“That in operating its said vessel the duty rests upon defendant to operate the same in a reasonably careful manner, so as to avoid colliding with or injuring structures along the shore.”
The next instruction related to the right and duty of the defendant when navigating in the fog and the succeeding instruction referred to the duty of maintaining a lookout. The next instruction, No. 8, reads as, follows:
‘‘It was also the duty of defendant to operate and navigate said vessel in the channel or usual course in which vessels navigating said river should be operated and navigated.”
In instruction No. 9, the jurors were told:
“If you find from a preponderance of the evidence, therefore, that defendant failed to “perform any one or more of these duties, then defendant was negligent and not in the exercise of due care.”
Instruction No. 26 is important because it was given at the request of the defendant. This instruction begins by saying that if the jury found that the plaintiff had obtained permits from the State of "Washington and the United States and had erected and maintained the trap in the place and manner provided by such permits and if the jury further found—
“That the defendant was careless and negligent in piloting, operating and navigating its towboat ‘Samson,’ and in thereby causing the same to run into and against the said fish-trap of plaintiff, and that the fish-trap was thereby damaged and injured the plaintiff is [187]*187entitled in such case, and in such case only, to recover from the defendant the amount of his damages; provided that the negligence of the defendant which occasioned the injury consisted in the failure of the defendant to keep and maintain its towboat within the limits of the navigable channel of the Columbia River and outside and beyond the fixed course and navigable channel of said river; or that the defendant failed to keep and maintain adequate and sufficient lights upon its towboat so that objects lying in the Columbia River could be seen and avoided; or that the defendant failed to keep and maintain a lookout upon its towboat and failed to keep and maintain a sufficient watch ahead; or that the defendant through negligence in looking ahead failed to see the fish-trap; or that, having seen the fish-trap, the defendant failed to use such means as were available to avoid striking and injuring the same; or that the defendant operated and propelled its towboat at a dangerous rate of speed, or at an unsafe rate of speed with regard to the condition of the weather, the atmosphere and the circumstances and conditions surrounding the locality where the accident complained of is alleged to have occurred; or that the defendant, having means to stop its towboat or to turn aside and thus avoid the fish-trap after the same was seen, failed to employ said means efficiently or to take proper and timely steps to stop its towboat or -to turn aside'and thus avoid the said fish-trap.”
Instruction No. 8 was clearly erroneous. Instruction No. 3, standing alone, is not strictly accurate for the reason that it states that the complaint charges that “the boat was being operated outside” instead of including the element of negligence and saying that the boat was being “negligently” operated outside of the channel. However, when this instruction is construed in connection with instruction No. 4, then the two when taken together harmonize with the complaint. The plaintiff does not rely in his complaint upon the bald fact that the defendant got outside of [188]*188the channel usually followed by vessels, but he relies upon the charge that the—
“Defendant carelessly and negligently failed to keep and maintain said tugboat within the limits of said channel and carelessly and negligently navigated said vessel outside and beyond said fixed course and channel. ’ ’
The position of the plaintiff with respect to instructions 3 and 4 is made plain by the following excerpt taken from his printed brief:
“By said instructions, III and IV, the Court charged the jury that it was alleged in the complaint that appellant carelessly and negligently operated its boat outside of and beyond the channel or course in which vessels should be operated and that if the jury found, not only that appellant did this, but that its action in so doing resulted from negligence or a lack of due care and they also found that such negligence caused the damages to the trap respondent was-entitled to recover, unless he was, himself, guilty of contributory negligence.
“In other words, the court instructed the jury that before they could find against appellant for navigating outside the channel or usual course of vessels they must find that it did so unnecessarily and because of negligence and a want of due care. It was properly left to the jury to say from all the circumstances talcing into consideration the location of the trap and the width of the channel, whether appellant’s action in going outside of the usual channel and course of vessels was the result of an unfair or negligent exercise of its right of navigation.”
Instruction No. 26 is entirely consistent with instructions 3 and 4 and is in harmony with the construction which the plaintiff places upon these two instructions. Instruction No. 8, however, told the jury that it was the duty of the defendant to navigate its vessel [189]*189in the channel and the nsnal course taken by boats. When this instruction is considered in the light of all the instructions which had been previously given and in connection with instruction No. 9, it was equivalent to charging the jury that if the defendant got outside of the channel or usual course taken by vessels, that fact alone and of itself convicted the defendant of negligence ; for after saying in instruction No. 8 that it was the duty of the defendant to operate its boat in the usual course taken by other vessels, the court said in instruction No. 9 that if “defendant failed to perforin any one or more of these duties” then the defendant was negligent. It was not negligence per se for the defendant to navigate the flotilla outside of and beyond the course usually followed by vessels. It was a question of fact for the jury to say whether the defendant failed to exercise ordinary care in the navigation of its flotilla. It may fairly be assumed that the defendant concedes that when its flotilla left Bugby Hole its captain intended to follow the usual course taken by vessels and did not intend to go between the Brandt and Anderson traps; the defendant does not contend that the business in which it was engaged required it to go outside of the usual course or to navigate the waters between the Brandt and Anderson traps; and consequently the ultimate question of fact is whether the defendant failed to use due care when transporting the rock down the river, and although a failure to keep within the usual course taken by vessels is not negligence as a matter of law, nevertheless as stated in Porter v. Allen, 8 Ind. 1, 4 (65 Am. Dec. 750), “though it was proper for the jury to consider the fact” that the boat was not in the usual and ordinary channel where boats are usually run “in connec[190]*190tion with the other facts proved in the case, still it was alone insufficient to control the verdict.”
The charge to the jury should, of course, in this as in all cases, he considered as a whole with the view of ascertaining if possible whether the rights of the appealing litigant were so prejudiced as to prevent a fair trial. Instruction No. 8 was not a mere parenthetical statement made during the course of the charg-e, but it stands out as prominently as any other single instruction appearing in the charge, and it contains plain language which the jury could not have misunderstood; and hence a reversal of the judgment becomes necessary.
7. The defendant insists that the Anderson trap was an unlawful obstruction. The plaintiff was authorized by both the State of Washington and the United States to erect and maintain the trap. All the evidence shows that the trap was neither above nor below the place indicated in the permits, although there is a controversy as to whether or not the trap extended farther out into the river than allowed by the permit given by the United States. The defendant argues that all that part of the trap which was taken out when the flotilla went through the lead was beyond the limits fixed by the permit. The evidence shows conclusively that the 24 piling taken out were either in whole or in part within the limits of the federal permit. The defendant argues that the trap exceeded the length allowed by the permit by 180 feet. Even though it be assumed that the trap was 180 feet too long, still it must be remembered that the heart was 50 feet wide, and if to this width is added the distance covered by the one or two piling left standing next to the heart, and also the distance covered by the 24 piling taken out, it will be seen that only a part of the obstruction [191]*191was unlawful in the sense that it exceeded the authority given to the plaintiff. If, on the other hand, the trap did not extend beyond the point allowed by the permit, then all of it was authorized and no part of it was an illegal obstruction. No part of the trap was within the usual course followed by vessels going up or down the river.
8. The defendant has urged with much vigor that this is a local action and therefore triable only in the State of Washington. The plaintiff first obtained' a permit from the United States in 1901 and he operated under that permit until 1912 when he received a new permit. In each year of that period, except possibly four or five years when he did not put in the trap, the plaintiff drove the piling for his trap and completed its construction a short time before the fish began to run and then when the fishing season ended for that year he pulled out the piling and removed the trap. No part of the trap was driven into the earth except the piling; and all the piling were driven by the owner with the intention on his part of removing them at the end of the season; and hence the trap was only personal property: Johnson v. Pacific Land Co., 84 Or. 356 (164 Pac. 564); Roseburg National Bank v. Camp, 89 Or. 67 (173 Pac. 313). The trap was only an appliance used by the plaintiff in the exercise of his right to fish. The action is not one for trespass upon real property; nor is it prosecuted on account of any assault upon the right of fishery. The trap was personal property and was used as an appliance by the plaintiff, a salmon fisherman; and when that appliance was damaged the result was not different in principle from the situation presented by some person negligently breaking an ordinary trout-rod which the owner was using for casting from the bank into a [192]*192stream and even though the trout fisherman owned the bank upon which he stood,while casting. The injury complained of was damage to the trap and the action is transitory.
9. The next question relates to the measure of damages. The court said to the jury that if the plaintiff was entitled to recover at all he was entitled “to such damages as you may find from a preponderance of the evidence will fairly compensate him for the loss he has suffered”; and that—
“There are two elements of damage to be considered by you. First, you will consider and determine from the evidence the reasonable amount that it would be necessary to expend to repair plaintiff’s trap and restore it to the same or as good condition as it was before the injury. Second, you will determine from the evidence the value of the use of plaintiff’s trap during such time as it was necessarily delayed by the injury to it. The sum of these two elements so determined by you would be the amount plaintiff is entitled to, if entitled to any sum. ’ ’
Besides evidence relating to the cost of repairing the trap there was testimony concerning the number of fish caught by the Anderson trap before the acci7 dent and also after the trap was repaired as well as testimony about the catch made by other traps in that locality and on the same side of the river. The Anderson trap had been in operation from September 10, 1911. There was evidence to the effect that the catch made by the Anderson trap averaged 1,500 or 1,600 pounds a day for a few days before the accident; that .the fish “generally run steady on that place there, right along. When we have a run, we have one at about the same time as the other places.” The plaintiff testified that the “run of Silver-side Salmon” continued during the period' of two weeks while his trap [193]*193was out of repair “because the rest of the traps above me and below me had lots of fish at the time when she was broke off”; that during those two weeks the traps above and below his trap “were catching up to a couple of tons a day”; that after the trap was repaired the average catch was “about 1,600 or 1,700 pounds per day. ’ ’ Charles Brandt, who was an experienced trap fisherman and thoroughly familiar with the Anderson trap, testified that he knew the reasonable value of the use of the Anderson trap and that its value was “between $50 and'$60 a day” during “the time she was broke down”; however, he also stated that he never knew of a trap having been rented for a money rental but that all the leases coming to his knowledge had been “on the shares.” This witness further explained that the Anderson trap “was a trap that caught the fish, and she is the best trap there is in” that locality; that he “would be willing to pay the man $50 a day for the use of that trap”; and that “I go on the basis of what catch she is making” when estimating the value of the trap. The weather conditions, according to all the evidence, were favorable. The foregoing is substantially all the evidence relating to the value to the use of the trap.
The defendant contends that it was error to receive evidence of the ayerage catch of the Anderson trap before and after the accident; that the testimony about the catch made by other traps, located above and below the Anderson trap, was erroneous. The defendant took the position that the occupation of a fisherman is uncertain and precarious and that his profits are necessarily speculative and for that reason the defendant requested, but the court refused to give, the following instruction:
[194]*194“The value of the fish-trap of the plaintiff, if you should find that the plaintiff is entitled to recover is a matter of easy determination, and inasmuch as the trap is put in for one season only, I charge you that the measure of damages for the use of the trap is interest upon such value as you may find the trap to have had at the time of this injury for such period as you may deem reasonable, but not over the period of one year at the rate of six per centum (6%).”
The law aims to allow full and complete compensation to an innocent party who has been damaged by the breach of a contract or the commission of a tort. In practice, the law does not prove false to its theory by banning profits merely because of their nature as profits; but upon the contrary the law endeavors faithfully to realize its aim by allowing compensation for profits which it is reasonably certain would have been made if the wrong complained of had not been done: Allison v. Chandler, 11 Mich. 542 (8 R. C. L. 501); Bredemeier v. Pacific Supply Co., 64 Or. 576 (131 Pac. 312); Fields v. Western Union Tel. Co., 68 Or. 209, 217 (137 Pac. 200); McGinnis v. Studebaker, 75 Or. 519 (146 Pac. 825, 147 Pac. 525, Ann. Cas. 1917B, 1190, L. R. A. 1916B, 868); Feeney & Bremer Co. v. Stone, 89 Or. 360 (171 Pac. 569, 174 Pac. 152); Fletcher v. Fischer, 93 Or. 265 (182 Pac. 823). In the absence of malice the law endeavors to compel reparation rather than punishment. "When attempting to compel reparation the difficulties encountered by the administrators of the law consist in the application rather than in the interpretation of the rules prescribed for the measurement of damages. There is no single rule applicable alike to all cases, involving profits which may be taken into account, when fixing the amount of compensation for the breach of a con[195]*195tract or the commission of a tort. In some cases profits constitute either the sole or one of the elements of damages and therefore are to he taken as the measure of the amount of compensation; and in other cases profits constitute only an item of evidence to be taken into consideration, together with other evidence, by the jury when fixing the amount of compensation.
If the complaint is strictly construed, it must be interpreted to mean that the plaintiff is suing for profits as an element of damages, and hence if entitled to recover on his theory of the case he would be entitled to have this element of damage measured by the amount of the profits. The instruction of the court, however, is based on the theory that the plaintiff is entitled to recover the value of the use of the trap, and we think that the theory of the trial court is correct and in harmony with the principle which supports the holding in Williams v. Island City Milling Co., 25 Or. 573 (37 Pac. 49). One witness testified that he never knew of a trap having been rented for a money rental, and hence it may be that the trap does not have a rental value in the same sense that the words “rental value” are used when referring to a storeroom or a dwelling-house in a city; and yet the trap did have a usable value. The trap was usable for only one purpose and it was valuable for that and no other purpose, and the damages must, in order to award compensation, be ascertained by an inquiry into the value of the use of the property to the injured party for the time he was deprived of it. Past results ought to be of some aid in fixing the usable value, and in the very nature of things one of the first inquiries that one would naturally make when estimating the usable value of the trap would be: How many fish did the trap catch? Admission of evidence concerning the catches made by the trap before the [196]*196injury is fully supported by tbe doctrine stated in Williams v. Island City Milling Co. See, also, the luminohs opinion in Standard Supply Co. v. Carter, 81 S. C. 181 (62 S. E, 150, 19 L. R. A. (N. S.) 155). While the past success of the trap is not controlling, iff is nevertheless one of the factors which may be taken into consideration, not as the measure of damages, but to aid the jury in estimating damages: Post v. Munn, 41 N. J. L. (1 Southard’s Rep.) 61, 63, (7 Am. Dec. 570); Wood Transfer Co. v. Shelton, 180 Ind. 273 (101 N., E. 718). See, also, Jacobs v. Cromwell, 216 Mass. 182 (103 N. E. 383).
That there was a good run of fish during the two weeks is evidenced, the plaintiff says, by the fact that the weather conditions were good, by the significant circumstance that other traps in the same locality, but less favorably situated than the Anderson trap, caught each day “up to a couple of tons a day,” and by the important fact that when the Anderson trap was repaired it caught each day from 1,600 to 1,700 pounds of fish. Does, not this evidence of the catches made during the two weeks as well as the catches made 'immediately afterwards serve to make more certain any inference of usable value that may be drawn from ’ prior results ? Obviously the testimony about 'the run and catch of fish during the two weeks when, the trap was out of repair and the catches made by the Anderson trap when again put in repair constituted data which would be very helpful in fixing the usable value of the trap for those two weeks. The fishing season is of comparatively short duration, and consequently the usable value of the trap might be negligible at one time of the year and considerable at another. lit brief, the evidence under discussion was competent, not for the purpose of measuring the com[197]*197pensation to be paid to the plaintiff, but for the purpose of aiding the jury in estimating the usable or rental value of the trap.
There are other exceptions presented by the record, but since the questions arising out of them are not likely to recur upon a retrial, we deem further discussion unnecessary.
The judgment is reversed and the cause is remanded for a new trial. Reversed and Remanded.
McBride, C. J., and Burnett and Benson, JJ., concur.