The Coagulation Time of the Blood in Man 329 



At higher temperatures the effect is less marked but still distinct. 



If the temperature of the water were kept constant by a gas regulator 

 and some means adopted for preventing the inflow of air at room tempera- 

 ture when the wire is removed, the method would be a good one, for no 

 doubt with practice it would be possible to shake off the extra quantity of 

 blood So as to get films of approximately equal thickness. 



IV. The Effect of Low and High Temperatures on the 

 Coagulation Time of the Blood. 

 The low temperatures were obtained by adding ice to the water in the 

 tank. The following is a list of coagulation times taken at temperatures 

 from 3-26 to 51 5° 0. :— 



