124 THE LAND-MARKS OF 



being up for three hours I have remained in the 

 experimenting room watching the dog experi- 

 mented on for forty-six consecutive hours — without 

 Tediousneas sleep and without leaving the room. This vigi- 

 experiments. lance was absolutely necessary as a half minute's 

 cessation of the artificial respiration operations, on 

 the part of the men, would have been fatal to the 

 experiment in hand, and would have necessitated 

 the conduct of a fresh experiment. Add to the 

 number of hours, a close room, the peculiar Stench 

 of pariah dogs, and plenty of mosquitoes, and you 

 may realize one's discomfort while the experiment 

 lasted, and the state of fatigue afterwards. As 

 Fatal doses of regards the quantity of cobra-poison required to 

 kill, the Commission found that the tenth of a 

 grain killed a dog weighing 18 lbs., in eleven 

 hours and thirty minutes. One-twentieth of a 

 grain injected beneath the skin of a dog, weighing 

 26 lbs., produced drowsiness and vomiting, but the. 

 animal recovered. The thirty-second part of a 

 grain injected into the peritoneal cavity of a dog 

 weighing 12 lbs., produced all the symptoms of 

 cobra-poisoning, and eventually killed it in about 

 fifty hours. 



These results shew not only how fearfully 

 B\ibtle is cobra-poison, but how a favourable 



