MITOCHONDRIA VARIATIONS IN NERVE CELLH 345 



•DESCRIPTION OF PLATES 



Th(> figures have boen drawn from cells in the central nervous system of a 

 female white mouse, thirty-five days old, weighing 9 grams, body length 6.8 cm, 

 and tail length 6.1 cm., fixed in neutral formalin and bichromate and stained with 

 fuchsin and methyl green. By this method the mitochondria are stained bright 

 crimson against a green background of Nissl substance. The mitochondria are 

 represented in black in the illustrations which were drawn with Zeiss apochro- 

 matie objective 1.5 mm., compensating ocular 6 and camera lucida. The figures 

 are reproduced without reduction so that they represent an actual magnification 

 of 1660 diameters as they now appear on the plates. They are intended to illus- 

 trate differences in the morphology and in the arrangement of mitochondria, 

 which are peculiar to and which are constantly met with, in certain types of 

 nerve cells in the brains of white mice. 



lEHICAX JOURNAL OF AXATOMY, VOL. 20, 



