1912.] 



A Critical Study of Experimental Fever. 



177 



5 or absence of fever in any given case are only made in this sense. 

 Unless otherwise stated, all injections were made into the marginal veins of 

 the ear. 



The points we wish to establish are illustrated by charts. For the sake of 

 brevity, we designate the fever -producing body under discussion by the 

 letters F.P.B. 



Water Fever. 



Charts 1, 2, 3 are typical instances of experiments showing the fever- 

 producing capacity of ordinary distilled water, and its absence in the case of 

 water freshly distilled from a glass retort and injected at once. The essential 

 features of these charts occurred in every one of several hundred experiments 

 in which different volumes per kilogramme were injected. Special stress is 

 laid not only on the absence of fever in the control animals, but also on the 





Chart 2. 

















































/ 



\ 



























/ ■ 











a\ 



















































X 





























/a 

























V 



















b\ 





















































A. Babbit, 2926 grin., injected intravenously with 50'40 c.c. water containing F.P.B. 



Injection ratio, 1/58. 



B. Babbit, 2500 grm., injected intravenously with 50 c.c. water containing no F.P.B. 



(Interval between observations, 30 minutes.) 



