“I have never attended any one who had taken prussic acid except in the form of medicine. The average dose of Scheele’s is five minims, and a minim is about a grain. Never heard of prussic acid being administered externally for varicose veins, and should think it useless (_prescription handed to him_). That is a proper prescription for varicose veins. I agree with Dr. Thompson, of London, that prussic acid may be applied successfully to diseases of the skin and cancerous affections to alleviate pain. I consider my sense of smell very acute. _I mixed twelve grains of prussic acid with a pint of porter, but could not smell it. Some porter dropped on the table and I did then smell it._ I know that prussic acid when combined with the blood of an animal volatilises very rapidly when exposed to the air. There is a case in which prussic acid appears to have allayed irritation of the stomach; it is a useful medicine sometimes in small doses. I have seen dogs vomit after it. Disease of the heart would produce death from mental emotion or rupture of the coronaries of the heart. Forcing water down the throat of a person in a syncope might cause sudden death. There was no congestion or gorging of the lungs. I saw but did not examine specially the coronary arteries.” _Kelly._—“If sudden death had occurred from a disease of the coronary arteries, what would be the appearance of the lungs?” _Witness._—“The lungs have nothing to do with the coronary arteries; ossification of them is supposed to cause sudden death. The blood in the lungs would not be prevented from returning the heart so as to gorge the lungs. I did not see any symptoms of the coronary arteries being ossified.” “I examined the lungs carefully. The lungs have been found gorged in some persons who have died of prussic acid. I don’t think that what has been called congestion was always clearly so. In all cases of paralysis of the heart, the blood has not been returned to the heart, and remaining in it gorges the lungs. Death by prussic acid paralyses the heart. In death from prussic acid, death is often denoted by an involuntary scream. I cannot say that I have heard of a succession of screams in any case of the kind. When I first saw the body, my impression was that death had been caused by oxalic acid, and that impression continued until the tests were applied. Blackness of the stomach is a symptom. There was a dark spot on the surface of the stomach. I have not seen a case of poisoning by oxalic acid.” _Re-examined by Mr. Prendergast._ “There was nothing in the stifled screams described by Mrs. Ashley yesterday at all inconsistent with poisoning by prussic acid; on the contrary, the catching of the breath is the last symptom. Less than one grain of prussic acid will kill a healthy person.”