morbid anatomy in the Army Medical Museum at Chatham gives a case of lumbrici occupying the biliary ducts and gall-bladder. I find, moreover, two additional cases of perforation of the small intestine, one of which appeared in the ‘London Medical Gazette’ (1827) and the other in the ‘Lancet’ (1836). During the Franco-German war Dr Reginald Pierson, as he afterwards informed me, removed a lumbricus from an abscess formed in the abdominal parietes of a soldier. But amongst the most curious cases (illustrating the wandering habits of these parasites) are those severally described by Barwell (1857), Williams, Prichard, and the Messrs Stockbridge. In Barwell’s case an Ascaris was expelled from a child who had swallowed the brass “eye” of a lady’s dress. Through the circular loop of this eye, used as a toy, the Ascaris had partly thrust its body, and becoming thus strangulated, it probably perished before it was evacuated. In Prichard’s case (1859) one or two lumbrici had similarly trapped themselves in the eyes of buttons swallowed by the patient, and one worm, not contented with a single strangulation, had succeeded in passing its body through two buttons. In 1842 Mr T. G. Stockbridge gave a similar case, in which he, not inaptly, spoke of these “hooks and eyes” as constituting a new remedy or “worm-trap” for lumbricus, and singularly enough, a namesake (W. Stockbridge), in the succeeding year, also recorded a like instance of the “mechanical expulsion of worms” by metallic buttons. Again, a third correspondent in the ‘Boston Journal,’ under the initials A. M., spoke of an open-topped thimble as constituting another new “worm-trap,” whilst he gave a case of lumbrici penetrating “metallic suspensor buttons.” There is also the case reported by Williams, who, at a meeting of the Boston Society for Medical Improvement, exhibited “a lumbricus with a dress-hook attached” (1857). Lastly, another lumbricus, trapped in the same way, may be seen in the Museum of the Royal College of Surgeons at Edinburgh.