618 



Experiments 



desired quantity of blood, so as to prevent the gases, which are 

 often given off, from escaping. When this discharge was con- 

 siderable, I weighed the syringe to get the quantity of blood, 

 volume readings then becoming very inexact. 

 2. Experiments. 



fig. 34 — Extraction of blood from an animal placed in compressed air. 



Here now is the detailed account of the experiments made in 

 the conditions specified above. 



Experiment CLXXXII. July 23. Dog weighing 12 kilos. 

 Drew from left carotid 36 cc. of blood .... A 



4:30. Put into compression apparatus, and air compressed with 

 current passing through; at 5:08, pressure of 10 atmospheres reached. 



