PHYSIOLOGICAL H&MAToLOGY. 271 



approximately the same volume per cent of red blood 

 corpuscles. If not, seek for causes for the differences 

 in different individuals. 



FIG. 43. 

 FIG. 43. Haematocrit. 



(3) Does the same individual have the same volume 

 per cent of red blood corpuscles all the while ? 



