Note 503 — MINERAL POISONS. (continued 4)

Mr. Plowman has since stated, in conversation, that he has seen five or six mice, in one day, come into the ward-room, leap up a considerable height, and fall down dead on the deck. He also stated that the food for the use of the canary bird was kept in well closed bottles, so that it was impossible for it to have contracted any metallic impregnation.