persons who handle LPG products must either be certified by the state LPG board or supervised by a certified person and that violation of this statute is evidence of negligence. Ark.Stat.Ann. § 53-721 (replaced 1971); see, e. g., Rice v. King, 214 Ark. 813, 218 S.W.2d 91, 92 (1949). This contention is without merit. The trial court’s instruction # 11-A, a modification of Arkansas Model Jury Instruction (AMI) 601, AMI Civil 2d 601 (West 1974), accurately described the statutory requirements and stated the Arkansas rule that the violation of a statute, although not necessarily negligence, is evidence of negligence.2 See, e. g., Tri-County Gas & Appliance Co. v. Charton, 229 Ark. 989, 320 S.W.2d 103, 108 (1959); Rice v. King, supra, 218 S.W.2d at 92.
Plaintiffs complain, however, that the trial court’s instruction # 11-A contained “no clear statement that the mishandling of liquified petroleum gas is evidence of negligence.” Brief of Appellants at 3. In a diversity action state law controls the substance of jury instructions,
but the form of the charges and the language employed to convey the substance are procedural, hence federal, concerns. . [WJhile a litigant is entitled to have the trial judge advise the jury of his theories and claims (to the extent they are supported by the evidence adduced at trial), the actual form of the instructions is within the trial court’s discretion. Counsel cannot, therefore, require that an instruction be rendered in the categorical language that he fancies would be most beneficial to his cause.
Reyes v. Wyeth Laboratories, supra, 498 F.2d at 1289 (citations and footnotes omitted). Thus, unlike Arkansas trial courts, the district court was not required to follow exactly the applicable AMI; it was required only “to . . . fully and properly instruct upon all the elements of the case in light of controlling Arkansas law,” which it did. Stafford v. Southern Farm Bureau Casualty Insurance Co., 457 F.2d 366, 367 (8th Cir. 1972) (per curiam); cf. Scott v. Conroy, 577 F.2d 13, 16 n.2 (8th Cir. 1978) (federal courts are not required to give precise instructions set out in Missouri Approved Instructions). Compare Wharton v. Bray, 250 Ark. 127, 464 S.W.2d 554 (1971) (AMI applicable to facts of case and accurately stating the law preempted proffered instruction, which was properly refused even if it was correct and notwithstanding contention that no other instruction given properly covered the issue). In any event, plaintiffs have no grounds for complaint because the trial court’s instruction almost exactly follows AMI 601.
Plaintiffs also argue that the trial court erred in refusing proffered instruction # 8 which described LPG as a dangerous substance requiring a high degree of care, the violation of which is negligence. This proffered instruction is a modification of AMI 1301, “Negligence — Use of Explosives.” Arkansas law does recognize that LPG is dangerous and that its handling is covered by specific safety laws, Ark.Stat. Ann. § 53-721 (replaced 1971); e. g., Summers Appliance Co. v. George’s Gas Co., 244 Ark. 113, 424 S.W.2d 171 (1968). However, we have not been cited to nor have we found any Arkansas case law holding that propane, although extremely flammable, is an explosive within the meaning of AMI 1301. See, e. g., Continental Geophysical Co. v. Adair, 243 Ark. 589, 420 S.W.2d 836 (1967); Western Geophysical Co. v. Mason, 240 Ark. 767, 402 S.W.2d 657 (1966).
Next, plaintiffs argue that the trial court erred in giving only a “general, perfunctory” instruction on proximate cause. This allegation of error has not been properly preserved for appellate review because plaintiffs failed to object thereto in a timely and specific manner pursuant to Fed.R.Civ.P. 51.3 E. g., Missouri Pacific
2
Arkansas is a minority state in this regard. Restatement (Second) of Torts, Appendix 1, Reporter’s Notes § 288 B, at 373 (1966).
3
Rule 51 provides in part that “[n]o party may assign as error the giving or failure to give an instruction unless he objects thereto before the jury retires to consider its verdict, stating distinctly the matter to which he objects and the grounds of his objection.”