OF DENISON University. 
6S 
opinion, undoubtedly to be regarded as centrifugal. All medullated 
fibres springing from cells are centrifugal. Branching protoplasmic 
processes of cells are perhaps centripetal, while the so called nervous 
processes of these, even where non-meduUated, may be centrifugal.” 
(i.) The granular layer contains, besides scattered ganglion- cells, 
innumerable multipolar nerve cells, both larger and smaller. 
(2.) The very numerous small granular cells have only short 
protoplasmic processes terminating at the end in a brush. The very 
delicate nervous process usually springs from one of the protoplasmic 
processes and passes vertically into the molecular layer, where it di- 
vides into two unbranched fine fibres running horizontally and longi- 
tudinally. 
(3.) The large granular cells are less numerous and their densely 
branched fibres may penetrate deep into the white zone. The nervous 
process is abundantly branched in a small area and seems not to pass 
beyond the granular layer. 
(4.) Purkinje’s cells do not anastamose. The nervous process 
has a few fine branches ascending to the molecular layer. 
(5.) The small cells of the molecular layer are separable into 
outer smaller cells and the inner or basket cells, The former are pro- 
vided with strongly branched protoplasmic processes and a nervous 
process, the course of which is not yet known. 
The basket cells have long, strongly branched protoplasmic pro- 
cesses, which may extend to the outer edge of the molecular layer. 
The nerve processes very long and passes transversely over the bodies 
of the Purkinje’s cells and here and there sends downward perpendic- 
ular processes which subdivide and envelop the body of the Purkinje’s 
cells in a basket-like reticulum. 
(6.) The medullated fibres in the adult cerebellum do not divide, 
except rarely in the molecular layer. 
(7) The results of Golgi’s method reveal no actual anastamosis 
of cells and does not suggest any ground for assuming the existence 
of a nervous reticulum. 
Our own work has been too superficial to justify extended criti- 
cism of the results quoted, but we venture a few suggestions 
ist. Successful hgematoxylin staining brings out the nervous ele- 
ments with certainty and reasonable clearness. Golgi’s method is 
liable to introduce, error, in that the staining involves connective tissue 
elements and is variable. 
