PLATE II 



Fig. 1. — From juice of adrenal cortex of guinea-pig seen with crossed Nicol's 

 prisms. The globules with the black crosses are the doubly refracting myelin 

 globules — the rest are fatty globules (isotropous). Sketch of appearances seen 

 with the high power (Leitz, \ in. ). 



Yia. 2. Human liver juice, expressed from piece of liver tissue acted on for 12 



hours by absolute alcohol. Large doubly refractive globules are seen under 

 the crossed Nicol's prisms, along with abundant fatty globules. 



