4«2 O N O P t U M. 



At 5 minutes paft 4, I introduced fome of the fame folu- 

 tion beneath the (kin of the left\eg. At lo minutes paft 4, 

 there was confiderable difficulty in moving this leg ; and 

 his motion feemed now to be performed by pufhinghimfelf 

 on with his fore-legs. If he wilhed to jump, he was com- 

 pelled to pufh his body back upon his hind legs, inftead of 

 drawing them up to his body. The jump was only the 

 length of his hind legs, which then remained extended as 

 before. A filver probe introduced into the opening made 

 to injeil the folution, produced convulfions in both legs,. 

 by the aid of zinc. At 15 minutes after 4, both his legs 

 appeared perfedlly paralytic. At 20 minutes after 4, I in- 

 jed:ed fame of the fame folution under the fkin of the abdo- 

 men, which feemed in fome degree, after a fhort time to 

 paralize his fore-legs. 



The folution applied to the naked eye of the frog did not- 

 fee-m to affe£t it in the leaft, as it did not caufe it to cover it 

 with the lids. 



At 30 minutes after 4, I injed;ed fome drops into the 

 ftomach, which feemed at firft to convulfe it confiderably ; 

 It appeared to flrive to vomit, opening its mouth to the 

 utmoil extent, and making repeated convulfive motions of 

 the cefophagus. It could not now move its lower limbs,, 

 though they were occafionally convulfed ; and violent con- 

 •vulfions were induced by zinc and filver. 



At 20 minutes before 5, it feemed to have expired, but 

 by introducing a few more drops into the ftomach, a flight 

 convulfion was induced in about a minute. At 15 minutes, 

 before 5, it was completely dead. 



Teri minutes before 5, 1 opened the thorax and abdomen. 

 The heart beat 80 pretty vigorous pulfations in a minute.. 

 After removing the pericardium, I put a drop of the folui 

 tion upon the heart, which did not appear to diminilh its. 

 frequency. I now removed it from the thorax, and put it 

 ipto fome drops of the folution, which feemed foon to check 



it,. 



