xHv Journal of Comparative Neurology. 



in the plane of the nipples. These were felt as two sensations three 

 inches nearer the median line than the nipples. Subjective sensations 

 and translocation of sensations are also illustrated. Professor Krohn 

 has opened a new and profitable field. 



The Cerebellar Cortex of the Dog.' 



Dr. Berkley, favorably known for his researches upon the visceral 

 nervous system, undertakes, in the present paper, a resume of what 

 he had been able himself to see m the cerebellar cortex prepared by 

 a variety of methods. The hardening process chiefly employed 

 seems to have been the use of Flemmings fluid. This the present 

 writer has long discarded for brain tissue. The results with Golgi's 

 sublimate method were inferior to carbolic fuchsin with Flemming. 

 Serial sections were made in only a single instance. 



So far as can be gathered from the paper itself it was written 

 without familiarity with the works of Golgi, Cajal and Koelliker 

 which have revolutionized our knowledge of the histology of the cere- 

 bellum. Thus the axis cylinder fibre is said to pass directly from the 

 base of Purkinje's cell without giving off any branches, there is no 

 suggestions of nodes in the fibres, which are said to be all medullatt-d, 

 though the methods employed would seem to be adapted to such in- 

 vestigation. 



Six varieties of cellular bodies are described in the granular layer. 

 The granules (haematoxylin ceils) each with a small zone of proto- 

 plasm make up more than half. Only few fibres passmg from these 

 cells could be made out, and these with great difficulty in teased 

 preparations. 



Sparingly distributed among these are round or oval nuclei with 

 a deeply staming central nucleolus, with no protoplasm. These are 

 regarded as glia cells. Three varieties of Glia nuclei are distinguished 

 chiefly by variations In size. These are most abundant near the cells 

 of Purkinje. 



The most important section of the paper is that devoted to the 

 so-called eosin cells. These consist of spindle, triangular or quad- 

 rangular cells confined entirely between the central white and the 

 " limitans interna," i. e., layer beneath the cells of Purkinje. They 

 stain with satisfaction only with Flemming-copper-haematoxylin and 

 modification of Weigert's method. The cell body is formed in large 



1 Henry J. Berkley. The Cerebellar Cortex of the Dog. Johns Hop- 

 kins Hospital Report, Pathology, HI, 1S93. 



