action ox dogs and birds. 489 



Action on Dogs. 

 Experiment IV. — May 9. 



The effect of tlie poison on dogs was investigated in the same 

 manner as it had already been on cats in Experiments I — II F. 

 It will be seen that the results do not differ in any noteworthy 

 point from those previously obtained. 



Six c.c. of tlie solution were injected beneath the skin of a 

 <lo2 weiuhino; 8 lbs. It vomited for the first time 20 minutes 

 afterwards, and this vomiting continued at gradually increasing 

 intervals of from 15 minutes to three quarters of an hour for 

 the next 4 hours. At the end of that time the animal was 

 very restless, and continued to be so while it was observed.' On 

 the following day its gait became staggering ; and, finally, it lay 

 Hat on its belly, and died about 30 hours after the drug was 

 administered. 



General Action on Birds. 



Birds are affected very readily by the poison, and the 

 symptoms produced in them are simiL;r to those observed in 

 mammals. This will be seen by the results of the following 

 experiment. 



Experiment V. 



A full-grown pigeon had nearly 1 c.c. of the solution injected 

 "beneath the wing. In 10 minutes a quivering motion of the 

 wings was noticed ; in a quarter of an hour its feathers were 

 puffed out, its gait was staggering; 24 minutes after injection 

 it began to vomit. This was repeated 4 minutes afterwards 

 more violently, and several times subsequently. 40 minutes 

 after the injection it was unable to stand ; and from that time 

 to its death, 1 hour and 35 minutes after injection, it lay Hat on 

 the table, occasionally attempting to vomit unsuccessfully. Eor 

 the last 40 minutes its respirations were hardly visible, but it 

 moved when roused. Violent expiratory movements came on 

 just before the respiration finally ceased. 



