THEIE NATUEE AND EFFECTS. 77 



the blood, that it is not unusual for an . animal to die of 

 the consequences of them alone, without a single nerve 

 symptom having occurred. Thus in Experiment III. 

 the animal had no symptom till the respirations began 

 to increase in frequency, nor did the animal show any 

 muscular weakness then ; the only evidence that there 

 was of any other abnormal condition being copious dis- 

 charges of sanious fluid from the mouth and rectum. 

 The sole cause of death was undoubtedly oedema of the 

 pulmonary tissue, and the antecedent condition to this 

 must have been simply the altered condition of the 

 blood. But it is easy to collect plenty of cases of 

 death from blood change in dahoia-poison. 



Experiment XXI. 



A cat had one cubic centimetre of a solution of daboia- 

 poison, containing about five milligrammes ('077 of a 

 grain) of the poison injected into its leg subcutaneously. 



3.3 P.M. Injection. 



3.16 P.M. Seems in some pain. 



3.37 P.M. Respiration somewhat rapid. 



7 P.M. Seems pretty well. 



6 A.M. Ill; vomiting. 



1 P.M. Crouches down, disinclined to be disturbed. 



7 P.M. Refuses food. 



This animal lived for four days, all the time refusing 

 foo(f, having diarrhoea, and at last died of exhaustion. 

 The blood was found to be feebly coagulated after death. 



