Litermy Notices. clxvii 



sembling small ganglionic nerve cells, though of different forms, but 

 complex endings of the fibres were seen only in three of the varieties. 

 Five plates illustrate this section. 



V. The Intrinsic Nerves of the Sub-maxillary Gland of Mus 

 musculus. This study in the main corroborates the earlier observa- 

 tions of Cajal and Retzius. This gland proves to be an unusually fa- 

 vorable subject for the demonstration of intrinsic nerves by the Golgi 

 method. The terminal endings of the acinus plexus are apparently 

 situated in a two-fold position in respect to the cells of the duct. In 

 cross and oblique sections of the acini, especially in the latter, the 

 nerve fibres may distinctly be observed to pass through the membrana 

 propria of the tube, and the bulbar ending of the fibre is found to lie 

 upon the extreme outer edge of the secretory epithelial cell, most 

 commonly about the central region of the cell. This constitutes the 

 common, or infra-cellular type of ending. The second form — the in- 

 ter-epithelial type of ending — is seen with less certainty and frequency, 

 the nerve filament passing through the limiting membrane of the tube, 

 apparently entering the cement substance between two of the epithe- 

 lial cells, and there ending with a knob-like termination. 



In a considerable number of sections, generally in the neighbor- 

 hood of the hilum of the gland, and located near a secretory duct and 

 an artery, were found nests of large unstained sympathetic cells. 

 These cells were of an irregularly rounded, or globose shape, with very 

 clear protoplasm and nucleus, the processes in immediate conjunction 

 with the cellular body entirely untinged by the chrome-silver. Each 

 cell-nest held from twenty to thirty ganglion cells, with but a narrow 

 interval between each individual body, in which were numerous single 

 nerve fibres. These fibres ended in arborizations upon the cellular 

 elements, and could be traced from their terminations into the net- 

 works surrounding the larger arteries and salivary ducts, where they 

 were eventually lost. Portions of the finer dendrids of the sympathetic 

 cells were also impregnated, and their terminal portions formed 

 curved knotty endings around the rounded bodies of the nerve cells, 

 enwrapping them with coarse, irregular branchlets. 



VI. The Intrinsic Nerves of the Thyroid Gland of the Dog. 

 The author's impregnations give a meshwork of fibres situated almost 

 immediately upon the basal surfaces of the epithelial cells of the fol- 

 licles, from which the largest proportion of the nerve endings are de- 

 rived. The end-apparatus offers some slight difference in form from 

 that peculiar to the majority of glandular organs. In the place of the 

 familiar globular or flattened globular endings, the majority of the 



