
22 Mass. App. Ct. 170 (1986)
492 N.E.2d 105
COMMONWEALTH
vs.
GEORGE H. LEMAR.
Appeals Court of Massachusetts, Plymouth.
January 24, 1986.
May 7, 1986.
Present: ARMSTRONG, KAPLAN, & WARNER, JJ.
Richard Zorza, Committee for Public Counsel Services, for the defendant.
John P. Corbett, Assistant District Attorney, for the Commonwealth.
KAPLAN, J.
It was held in Commonwealth v. King, 387 Mass. 464, 467-469 (1982), that an indictment for sexual abuse of a minor was sufficient although it charged the dates of the commission of the offense in somewhat indefinite terms  "on divers dates and times" between two stated dates spanning more than a year and a half. This conclusion followed from G.L.c. 277, § 34, which provides that any lack of information in the indictment as to time may be supplied upon a bill of particulars.[1] See also Mass.R.Crim.P. 13(b), 378 Mass. 872 *171 (1979). Cf. Commonwealth v. Atkinson, 15 Mass. App. Ct. 200, 203 (1983).
In the present case  which we present in outline form  the amended complaint, for trial at a jury-of-six session, followed the King case in charging in a single paragraph indecent assault and battery on a person under fourteen years, committed at divers times between July 28, 1984, and October 1, 1984.[2] The defendant demanded and was furnished a bill of particulars, and we may take it that the bill, read together with the substance of the Commonwealth's evidence at trial, pictured criminal episodes that occurred on three separate dates between the dates mentioned in the amended complaint.[3] There was proof as to each of the three occurrences sufficient to go to the jury. The judge instructed the jury that they must act unanimously, but he did not state in terms that, to convict, all six jurors must find for the Commonwealth as to one or more of the occurrences; that it would not be enough, say, that three jurors were satisfied that the crime was committed on one occasion, while the other three were satisfied as to another occasion, without a convergence of the six jurors on either one.[4] At trial the defendant did not object to the instructions as given, or suggest any addition, but on this appeal he argues that the omission of a specific instruction was error which compels reversal of the judgment of conviction of the sexual offense.[5]
*172 It is suggested sometimes that a jury using robust intuition and good common sense will understand and act on the understanding that a general instruction about unanimity implicitly calls for the more specific unanimity. See Vitello v. United States, 425 F.2d 416, 422 (9th Cir.) (two to one decision), cert. denied, 400 U.S. 822 (1970). (It would be not unreasonable to take that view here.) We shall assume, however, that a judge would be obliged to give a specific instruction if the defendant requested it in accordance with the normal procedure of Mass.R.Crim.P. 24(b), 378 Mass. 895 (1979).[6] Suppose a specific instruction is not requested. The effect of Federal decisions (the question has had some vogue in Federal courts) is that a general instruction is enough to support a conviction, at least where the evidence with respect to each episode, incident, or the like was so strong as to defeat a motion for a required finding of not guilty. See United States v. Mangieri, 694 F.2d 1270, 1279-1281 (D.C. Cir.1982); United States v. Peterson, 768 F.2d 64, 67-68 (2d Cir.) (Friendly, J.), cert. denied, 474 U.S. 923 (1985). See also United States v. Natelli, 527 F.2d 311, 324-325 (2d Cir.1975), cert. denied, 425 U.S. 934 (1976); United States v. Cunningham, 723 F.2d 217, 227 (2d Cir.1983), cert. denied, 466 U.S. 951 (1984). Cf. United States v. Echeverry, 719 F.2d 974 (9th Cir.1983).
Even if the omission in these circumstances to provide an instruction with the nicer elucidation may be regarded as an error, it cannot be counted a "plain error" under Fed.R.Crim.P. 52(b), that is, an error so serious as to call for overturning a conviction.[7] See United States v. Mangieri, supra at 1280-1281;[8]United States v. Peterson, supra at 68. Our criminal *173 rules have no category of "plain error." For us the cogent consideration would be that posed in Commonwealth v. Freeman, 352 Mass. 556, 564 (1967)  "whether there is a substantial risk of a miscarriage of justice." (See our recent treatment of the Freeman case in Commonwealth v. Miranda, ante 10, 16, 21-22 [1986].) We have predicated that there was evidence here on which a jury could find beyond a reasonable doubt that each of the three incidents charged had in fact occurred. It does not appear likely that the jury verdict would have been different, had the judge added to his instructions. We need not go so far as to suggest that the defense on the line of fire may have preferred the instruction as given, since that could suggest to the jury that all the incidents must be proved to the satisfaction of all six jurors, not merely one of the incidents, thereby somewhat improving the chances of an acquittal. Cf. United States v. Natelli, 527 F.2d at 327. On the whole we think the conviction should stand.
Problems of general instructions on unanimity may be avoided by charging the particular occurrences in separate counts where that is feasible. Otherwise the instructions can readily be framed in ordinary cases to define precisely the meaning of unanimity.
We are not drawn into the rarer question how far, in connection with certain crimes and certain arrays of facts, the jurors may individually find slightly differing facts and yet concur sufficiently in their findings to support a conviction. See United States v. Gipson, 553 F.2d 453 (5th Cir.1977) (Wisdom, J.), and Note, Right to Jury Unanimity on Material Fact Issues: United States v. Gipson, 91 Harv.L.Rev. 499 (1977).[9]
Judgments affirmed.
NOTES
[1]  Section 34, as appearing in St. 1979, c. 344, § 34, reads: "An indictment shall not be dismissed or be considered defective or insufficient if it is sufficient to enable the defendant to understand the charge and to prepare his defense; nor shall it be considered defective or insufficient for lack of any description or information which might be obtained by requiring a bill of particulars."
[2]  The amended complaint does not appear of record, but can be reconstructed from the judge's instructions and a notation on the original complaint.
[3]  The evidence centered upon events on July 28, August 4, and August 17, 1984. There is no claim of impermissible variance from the particularized charges. See G.L.c. 277, § 35.
[4]  The Commonwealth agrees with the defendant that the convergence of all six on at least one occurrence is what is meant here by a unanimous verdict.
[5]  The defendant was also convicted of the illegal possession of a firearm on a particular day. He makes no argument for reversal.
[6]  Authority exists that a general instruction may suffice even where a specific instruction has been duly demanded. See United States v. Natelli, 527 F.2d 311, 324-325 (2d Cir.1975), cert. denied, 425 U.S. 934 (1976).
[7]  See 3A Wright, Federal Practice and Procedure § 856 (1982).
[8]  Judge Wald in Mangieri (at 1281) notes that the local District of Columbia Court of Appeals may be taking a more drastic view. On that point, see Johnson v. United States, 398 A.2d 354, 368-370 (D.C. 1979); Hawkins v. United States, 434 A.2d 446 (D.C. 1981); Hack v. United States, 445 A.2d 634, 641 (D.C. 1982); Davis v. United States, 448 A.2d 242 (D.C. 1982).
[9]  See the characterization of the Gipson problem in United States v. Peterson, 768 F.2d at 66-67.
