In this “action for damages to land by reason of permanent nuisance” (as plaintiffs’-appellants’ counsel characterize and classify it in the first sentence of their brief), plaintiffs Charles and Joan Stewart, husband and wife, obtained on June 23,1966, a ten-member jury verdict for $2,500 upon which judgment then was entered. (All emphasis herein is ours.) In response to the timely after-trial motion of defendant City of Marshfield, Missouri, the trial court entered an order on August 29, 1966, sustaining that motion and granting a new trial to defendant on the specified ground that the court had erred in giving plaintiffs’ measure of damages instruction 6 [MAI 4.01], From that order, plaintiffs appeal.
Plaintiffs reside some three miles north of Marshfield on a 93-acre dairy farm “through the south portion” of which Niangua Creek runs “antigoggling . . . a little more than a quarter of a mile.” Their residence is “less than a quarter of *821 a mile” from the creek. About one and one-half miles upstream from plaintiffs’ farm, defendant has, since about August IS, 1961, operated two sewage lagoons into which it empties the load gathered in its municipal sewer system. The alleged nuisance, of which plaintiffs complain, is the claimed pollution of Niangua Creek by the outfall of and seepage from the sewage lagoons and the asserted invasion of plaintiffs’ farm by noxious odors both from the sewage lagoons and from the polluted creek. In their third amended petition upon which they proceeded to trial, plaintiffs averred that the “nuisance is permanent”-, their case was presented and submitted on that theory in the trial court; and, as we have observed, their presentation here is on the same theory. Although defendant’s position in the trial court, as pleaded in its answer and supported by its evidence, was that, “if any nuisance has occurred, which defendant denies, such was temporary in nature,” it does not, on this appeal, dispute the sub-missibility of the case on plaintiffs’ theory that it is an “action for damages to land by reason of permanent nuisance.” With submissibility of the case on that theory not in issue, a detailed evidentiary review would be superfluous and we briefly note only the testimony bearing upon the issue of damages.
Evidence was offered from which the triers of the facts could have found that Niangua Creek, as it flowed through plaintiffs’ farm, had been so polluted that its waters had become unfit for piscatorial habitation or bovine use; that the milk production of plaintiffs’ dairy herd had been reduced and, after two cows had aborted and others had sicknesses “suspected” by the attending veterinarian to have been caused by the polluted creek water, plaintiffs “shut the cattle off from the creek” and watered them from a well at the barn; and that, after a drastic decrease in milk production of the herd, plaintiffs finally disposed of their cows at public sale on September 19, 1964, taking “a loss on every cow.” And there was evidence that “rotten” and “sickening” odors frequently had invaded plaintiffs’ residence and had interfered with their use and enjoyment thereof.
In harmony with plaintiffs’ theory of damages by reason of a permanent nuisance, their brief avers that “the extent of plaintiffs’ damages was proved by the testimony of O. E. Blackwell, a real estate broker .,” who supplied opinion evidence as to the diminution in the reasonable market value of plaintiffs’ 93-acre farm by reason of such nuisance. According to witness Blackwell, that farm “was well worth $150 an acre” or $13,950 before defendant’s sewage lagoons were constructed in 1961, but existence of the alleged nuisance (of which the witness disclaimed personal knowledge), “would cut the value of the place half.” As of the time of trial, to wit, June 22, 1966, the reasonable market value of plaintiffs’ farm, if it had not been damaged by the alleged nuisance, would have appreciated from $13,950 to $20,000; but existence of the nuisance “would cut the value in half . . . the same proportion,” or to $10,000. Plaintiffs regard Blackwell’s testimony as showing that the diminution in the reasonable market value of plaintiffs’ farm by reason of the alleged nuisance would have been one-half of $13,950, or $6,975. Defendant “interprets” the same testimony as meaning that such diminution in reasonable market value would have been $3,950, the difference between its pre-nuisance undamaged value of $13,950 and its trial-date damaged value of $10,000. We pass this conflict of counsel with the comment that our acceptance of one viewpoint or the other is neither necessary to nor determinative of the appeal.
Plaintiffs offered, and the trial court gave, instruction 6 [MAI 4.01] on the measure of damages as follows: “If you find the issues in favor of the plaintiffs, then you must award the plaintiffs such sum as you believe will fairly and justly compensate the plaintiffs for any damages you may believe they sustained as a direct result of the occurrence mentioned in the evidence. M.A.I. 4.01.” Defendant’s con *822 tention has been and is that “the instant case is one for damages for appropriation of property rights and the measure of damage instruction should have been the same as in an eminent domain or condemnation case,” namely, MAI 9.02.
What was said by our Supreme Court, en banc, in the landmark case of Riggs v. City of Springfield,
In Newman v. City of El Dorado Springs, Mo.App.,
The Committee on Jury Instructions requested “that the Supreme Court adopt the recommended rules requiring that when an approved instruction is applicable it must be given to the exclusion of any other instruction on the same subject.” MAI p. xxi. That request was honored [V.A.M.R. Rule 70.01(b)] and repeatedly thereafter our appellate courts have reminded the bench and bar that this is “[t]he basic theory concerning the use of MAI . . . .” 3 So it is that, in introductory directions on “How To Use This Book” [MAI p. xxxi], the first admonition of the Supreme Court is “SELECT THE APPROPRIATE INSTRUCTION” and, under that heading, it is pointed out that “[t]he lawyer must know enough about his case to choose the appropriate instruction. . . . The instructions are approved for use in cases where applicable and lawyers and trial judges must make this determination. . .” And as a prespicacious appellate jurist, particularly interested in this subject, recently warned: “Cases show that drafting a set of instructions requires more than merely picking MAIs out of the book. Other parts of the book are just as vital. High on the recommended reading list and mighty in content is ‘How To Use This Book,’ at MAI pages xxxi to xxxv. What the Supreme Court says there is as much a part of MAI as the instruction forms themselves. It warns counsel that the instruction selected must be appropriate, and to make that decision he must know the substantive law of his case.” Clemens, Use and Abuse of MAI, 24 J.Mo.Bar 236, 237 (June 1968).
Relying upon Jack L. Baker Cos. v. Pasley Mfg. & Distributing Co., Mo.,
In Baker, evidence as to the value of plaintiff’s property immediately before and after the explosion also was received; and, with respect to that evidence, the opinion records the significant fact “that plaintiff was permitted to argue that testimony to the jury” and in note 2 points out: “This is what the directions contemplate. The Committee’s Comment under MAI 4.01 includes the following: ‘During the instruction conference the parties and the Court should discuss
(on the record)
just what damages are supported by the evidence and can properly be argued to the jury. In this way jury arguments can proceed without undue interruptions.’ ”
The substantive law of the case at bar directs us to MAI 9.02 as the appropriate measure of damages instruction; and that instruction, with suitable adaptation, should have been given. Hence, the giving of plaintiffs’ instruction 6 (MAI 4.01) constituted error, “its prejudicial effect to be judicially determined.” V.A.M.R. Rule 70.01(c). As to this, plaintiffs’ counsel argue that the giving of instruction 6, if improper, could not have been prejudicial “in that the award of damages was well within the evidence.” To this point, they cite several
pre-MAI
decisions
4
and V.A. M.R. Rule 83.13(b). Under circumstances in no wise analogous to those here presented, the cited cases did recognize and apply the general principle that, where the damages awarded are not excessive and fairly represent the damages shown by the evidence, an erroneous or inaccurate measure of damages instruction does not necessarily constitute reversible error; and, in the determination of this case, we do not repudiate that principle, although it may be timely to point out “that the key word in that rule is ‘necessarily.’ ” Waymire v. Carter, Mo.App.,
All interested counsel accept the undoubted truth that “the damages [recoverable herein] are confined to the diminished value of the land incident to the maintenance of the permanent nuisance, which is in the nature of an easement.” Lewis, supra,
In pondering plaintiffs’ plea of nonprej-udice, we also have in mind the state of the record on the fundamental and sharply-contested issue as to whether plaintiffs’ farm had been damaged by a permanent nuisance. In a colloquy between court and counsel, plaintiffs’ attorney said “it is up to the jury to say whether it is permanent or not; it is a jury question.” Yet, the issue of permanence vel non of the nuisance allegedly resulting from the sewage lagoons constructed in 1961 was in no manner submitted to, or even called to the attention of, the jury in plaintiffs’ sole verdict-directing instruction 5 or, for that matter, in any instruction. Hence, with the arguments of counsel unreported, whether the jury was advised of this basic issue is not here known or ascertainable.
“All deviations from the straight and narrow path prescribed in MAI will be presumed prejudicially erroneous unless it is made perfectly clear that no prejudice has resulted. The requirements of MAI are mandatory. The burden of establishing nonprejudice is on the proponent of the instruction. That it is the policy of this court to require strict compliance with all of the requirements of MAI is made clear in Brown v. St. Louis Public Service Co., Mo.,
Hence, “where there is
deviation
from an applicable MAI instruction which does not need modification under the facts in the particular case, prejudicial error will be presumed unless it is made perfectly clear by the proponent of the instruction that no prejudice
could
have resulted from such deviation,”
5
A fortiori, the same must be true where, as here, an inapplicable instruction [MAI 4.01] has been given instead of an applicable one [MAI 9.02], Epps v. Ragsdale, Mo.App.,
Finally, we recall the “familiar, well established principle that this Court will be more liberal in upholding the trial court’s action in sustaining a motion for new trial than in denying it. ... ‘This is because the power of the trial court to grant a new trial is an exercise of its judicial discretion, v/hich may be based upon matters known to the court (often said to be in the breast of the court) because the trial judge participated in the trial and knew what took place.’ Castorina v. Herrmann,
Being satisfied that instant plaintiffs have not made it perfectly clear that no prejudice could have resulted from the giving of their instruction 6 [MAI 4.01], we are constrained to conclude that the order granting a new trial to defendant must be affirmed. So determining, it becomes unnecessary to discuss and rule defendant’s *826 further point that prejudicial error also was committed in the giving of plaintiffs’ verdict-directing instruction S, “not in M.A.I.” However, in the interest of minimizing the possibility of error upon retrial, we observe that MAI 26.05 is the verdict-directing instruction in eminent domain cases where property rights such as easements are taken, and we suggest that plaintiffs’ counsel would be well-advised to submit their cause of action predicated on an alleged permanent nuisance by an instruction adapted from MAI 26.05.
■The order granting a new trial to defendant is affirmed and the cause is remanded.
Notes
. Instant defendant, a city of the fourth class, had the same right to secure the use of Niangua Creek. V.A.M.S. §§ 250.010 (1), 88.844, 88.077; City of Ash Grove v. Davis, Mo.App.,
. Newman v. City of El Dorado Springs, Mo.App.,
. Peak v. W. T. Grant Co., Mo. (banc),
. Blydenburgh v. Amelung, Mo.App.,
. Brown v. St. Louis Public Service Co., Mo. (banc),
