92 



PROXIMATE PRINCIPLES OF THE SECOND CLASS. 



Fig. 13. 



In the glandular cells of the liver, oil occurs constantly, in a 

 state of health. It is here deposited in the substance of the cell 



(Fig.13), generally in smaller 

 globules than the preceding. 

 In some cases of disease, it 

 accumulates in excessive 

 quantity, and produces the 

 state known as fatty degene- 

 ration of the liver. This is 

 consequently only an ex- 

 aggerated condition of that 

 which normally exists in 

 health. 



" In the carnivorous animals 

 oil exists in considerable 

 quantity in the convoluted 

 portion of the uriniferous 



HEPATIC CELLS. Human. . T . . 



tubules. (Fig. 14.) It is here 



in the form of granules and rounded drops, which sometimes appear 



to fill nearly the whole calibre of the tubules. 



It is found also in the secreting cells of the sebaceous and other 



glandules, deposited in the 

 same manner as in those of 

 the liver, but in smaller 

 quantity. It exists, beside, 

 in large proportion, in a 

 granular form, in the secre- 

 tion of the sebaceous gland- 

 ules. 



It occurs abundantly in 

 the marrow of the bones, 

 both under the form of free 

 oil-globules and inclosed in 

 the vesicles of adipose tissue. 

 It is found in considerable 

 quantity in the substance of 

 the yellow wall of the corpus 

 luteum, and is the immediate 



cause of the peculiar color of this body. 



It occurs also in the form of granules and oil-drops in the 



muscular fibres of the uterus (Fig. 15), in which it begins to be 



14> 



UaiNiFERors Ti;nui.E8 OF DOG, from Cortical 

 Portion of Kidney. 



