Special interest has attached to the possibility of tin poisoning on account of the widespread use of canned foods.[38] It is established chemically that tin is attacked, not only by acid fruits and berries, but by some vegetables having only a slightly acid reaction. More tin is found in the drained solids than in the liquor, and the metal is largely in an insoluble form.[39] It has been the general opinion based on experiments by Lehmann[40] and others that the amounts of tin ordinarily present in canned foods "are undeserving of serious notice," and this view has found expression in the leading textbooks on hygiene.[41] Certainly there has not been any noticeable amount of tin poisoning observed coincident with the enormous increase in the use of canned [p.30] foods. An instance of poisoning by canned asparagus observed by Friedmann,[42] however, is attributed by him to the tin content, and this v. . . Read More