604 PRINCIPLES OF GENERAL PHYSIOLOGY 



FIG. 187. LAVOISIER AND HIS WIFE. 



(From the picture by David. Grimaux' " Lavoisier.") 



idoneus eat." " With respect, then, to the use of respiration, it may be affirmed that an aerial 

 something, whatever it may be, essential to life, passes into the mass of the blood. And thus 

 air driven out of the lungs, these \jtal particles having been drained from it, is no longer fit 

 for breathing again " (p. '204). 



