opinion: PER CURIAM.
  This appellant was acquitted on a charge of purchase, sale or distribution of a narcotic drug, but was found guilty by a jury of facilitating concealment of narcotics. It is now contended for the first time that the trial judge should not have admitted in evidence a cigarette package dropped by the accused as an officer approached. The package contained five gelatin capsules of heroin. No motion to suppress was made and no objection to the receipt of the evidence was voiced during the trial. Able counsel appointed by this court further argues that the Government’s expert chemist, whose qualifications were conceded at trial, should not have been permitted, despite the absence of objection, to testify that opium is not grown in the United States.
  In Fuller v. United States, 53 App.D.C. 88, 91, 288 F. 442, 445 (1923), we said: “The general and obviously salutary rule is that objection to the admissibility of evidence should be made at the time it is offered and the grounds therefor stated.” Over the intervening years, “We frequently have pointed out that objections to the receipt of evidence should be made in the trial court.” White v. United States, 114 U.S.App.D.C. 238, 314 F.2d 243 (1962). Appellant would have us say notwithstanding the state of the record before us, that his conviction should be reversed.
  On the contrary, we are satisfied there was no error affecting substantial rights. See Fed.R.Crim.P. 52(b). Affirmed.
instruction: What follows is an opinion from a United States Court of Appeals. You will be asked a question pertaining to issues that may appear in civil law issues involving government actors. The issue is: "Did the court support the decision of an administrative law judge? Answer the question based on the directionality of the appeals court decision. If the court discussed the issue in its opinion and answered the related question in the affirmative, answer "Yes". If the issue was discussed and the opinion answered the question negatively, answer "No". If the opinion considered the question but gave a mixed answer, supporting the respondent in part and supporting the appellant in part, answer "Mixed answer". If the opinion does not discuss the issue, or notes that a particular issue was raised by one of the litigants but the court dismissed the issue as frivolous or trivial or not worthy of discussion for some other reason, answer "Issue not discussed". If the opinion considered the question but gave a "mixed" answer, supporting the respondent in part and supporting the appellant in part (or if two issues treated separately by the court both fell within the area covered by one question and the court answered one question affirmatively and one negatively), answer "Mixed answer". If the opinion either did not consider or discuss the issue at all or if the opinion indicates that this issue was not worthy of consideration by the court of appeals even though it was discussed by the lower court or was raised in one of the briefs, answer "Issue not discussed".