Again, whilst it is stated by M. Duchâtelet that students who attend the dissecting-rooms are sometimes seriously injured, and even killed by pricks and cuts with the instruments of dissection, yet it is denied that they are subject to any illness from the emanations from the remains “other than a nausea and a dysentery for two or three days at the commencement of their studies.” Fevers the students of medicine are confessedly liable to, but he says it is only when they are in attendance on the living patients in the fever wards. Sir Benjamin Brodie pointed out to me, that from the precautions taken, by the removal of such portions of the viscera as might be in an advanced state of decomposition, and from the ventilation of dissecting-rooms being much improved, the emanations from the bodies dissected are not so great as might be supposed; nevertheless, he observes:— There is no doubt that there are few persons who during the anatomical season are engaged for many hours daily in a dissecting-room for a considerable time, whose health is not affected in a greater or less degree; and there are some whose health suffers considerably. I have known several young men who have not been able to prosecute their studies in the dissecting-room for more than three or four weeks at a time, without being compelled to leave them and go into the country. The great majority, however, do not suffer to that extent, nor in such a way as to cause interruption to their studies; and, altogether, the evil is not on a sufficiently large scale to attract much notice, even among the students themselves. A writer on public health, Dr. Dunglison, maintains that “we have no satisfactory proof that malaria ever arises from animal putrefaction singly;” and as evidence of this position he adduces the alleged fact of the numbers of students who pass through their education without injury; yet he admits—