EXPLANATION OF THE PLATES. 



PLATE LVIL 



Fig. 1. A terminal biliary duct, ^copied from a drawing of 

 Dr. H. Jones. 



Fig. 2. Secreting cells of the liver. The group lettered a 

 represents the cells in the usual condition in which 

 they are met, when submitted to observation : in b, 

 the cells are gorged with bile, while in c, they con- 

 tain numerous fat or oil globules. 



Fig. 3. Concretions or calculi from the prostate gland. 



Fig. 4. a represents an hitherto undescribed form of tubular 

 gland occurring in the region of the human axilla 

 in close connection with the large sudoriferous 

 . glands which are there met with. It differs from 

 these last, however, in several particulars, but 

 principally in the smaller calibre of the tubes, and 

 the presence (clearly shown by the action of acetic 

 acid) of innumerable nuclei in the walls of the tubes, 

 and of which these would appear to be principally 

 constituted. In b and c, the differences in the size 

 and structure of the tubes in the two glands are 

 shown. 



Fig. 5. Ceruminous glands. I cannot detect the slightest 

 difference between these glands and ordinary sudo- 

 riferous glands, with which, it would appear, they 

 must be considered to be identical. 



