POISON OF SOME INDIAN VENOMOUS SNAKES. 87 



then falls and lies on its side. The hind legs seem to be 

 weaker than the fore legs. 



6.52. Animal lying on its side. When a bright light is 

 brought before its eyes it draws back its head. The cornea is 

 quite insensible. When the paws are irritated by striking, 

 pinching, or pricking there is no response. When the inside 

 of the ear, nose, or mouth is tickled, the cat shakes its head, 

 and sometimes moves its paw to put the irritant away. 



7.5. On touching the eyes it sometimes draws back its head, 

 but there is not the slightest motion of the eyelids. It 

 voluntarily moved its paws and head as if to rise, and then 

 sank back as if asleep, and lay still on its side. 



7"6. Laid it on its belly. It rose and walked a step or two 

 towards a darker corner and then fell. Immediately after- 

 wards the muscles of the neck gave a sort of shudder. After 

 movement the respiration becomes much quicker, and then 

 rapidly becomes slow. After lying a minute or so its respira- 

 tions arjs 27 per minute. 



7.25. Moves its paws and tries to get up voluntarily, but 

 cannot do so. Irritated paws and ear by sparks from a Du-Bois 

 coil. No reaction. On irritating the inside of the thigh in 

 a similar manner, it stretched out its fore legs, protruded its 

 claws, and seemed to be trying to grasp me. 



7.o3. The respiration ceased without convulsions. The 

 cannula in the trachea was immediately connected with an 

 apparatus for artificial respiration, and this was kept up. 

 While some adjustment was being made on the apparatus the 

 animal was observed, and its heart was found to have ceased to 

 pulsate about five or ten minutes after artificial respiration had 

 been begun. 



On opening the thorax the lungs were found somewhat 

 congested. The right side of the heart was moderately filled. 

 The left ventricle was quite empty and firmly contracted. The 

 surface of the stomach and intestine was much congested. 

 The interior of the stomach was not congested. 



In this experiment, respiration continued for two hours after 

 the injection of the poison. The most remarkable points as 

 regards respiration are its great acceleration, with occasional 



