460 WaALLACE LARKIN CHANDLER 
Puatre VI 
1-4, Photomicrographs of Purkinje cells from the cerebella of four dogs of the same 
litter. x 525 
1, Normal cells from control animal. The presence of tigroid bodies (Nissl bodies [N] ) 
is to be noted 
2, Cell from animal poisoned by the vapor of nitrobenzene, showing the first stages of 
chromatolytic degeneration. The much swollen cell-body, and the absence of tigroid bodies 
except a few in the vicinity of the nucleus, are apparent 
3, Cells from animal poisoned by the vapor of nitrobenzene, showing (a) the swollen 
cell-body and the absence of tigroid bodies, and (b) a homogeneous appearance of the cyto- 
plasm and the absence of tigroid bodies 
4, Remains of a Purkinje celi which has undergone chromatolytie degeneration. (From 
the cerebellum of a dog poisoned by the vapor of nitrobenzene) 
5-6, Photomicrographs of motor cells from the ventral horn of the cervical cords of two 
dogs from the same litter. x 525 
5, Normal cell from control animal 
6, Cell, apparently normal, from animal (Dog F) poisoned by the vapor of nitrobenzene 
7-8, Photomicrographs of sections thru similar convolutions of the cerebella of two dogs. 
x 60 
7, From control animal, showing the presence of Purkinje cells (P) and a normal cortical 
area (c) 
8, From animal killed nine months after being poisoned by the vapor of nitrobenzene 
(Dog XVIII), showing the absence of Purkinje cells and a much atrophied cortical area 
