I. ON THE OCCUERENCE OF FAT IN THE EPITHELIUM, 

 CARTILAGE, AND MUSCLE FIBERS OF THE OX. 



IL ON THE HISTOGENESIS OF THE ADIPOSE TISSUE 

 OF THE OX. 



BY 



E. T. BELL, M.D., 



Assistant Professor of Anatomy, University of Missouri. 

 From the Anatomical Laboratory. 



I. On the Occubkence of Fat in the Epithelium, Cartilage, 

 AND Muscle Fibees of the Ox. 



An extensive study of the process of fattening in the ox is being 

 made by the Agricultural Experiment Station at the University of 

 Missouri. This first paper deals with the histogenesis of the adipose 

 tissue and the occurrence of fat in the other tissues. Other papers 

 will follow later. The department of anatomy is co-operating with 

 the experiment station on the histological part of this investigation. 

 The entire experiment is under the direction of Dean H. J. Waters, 

 to whom I am indebted for many special favors. 



It is to be borne in mind that fat occurs not only in adipose tissue 

 cells but also in many otheT tissues. In the adult small fat droplets 

 are present in cartilage cells and in several kinds of epithelial cells. 

 In the young foetus small fat droplets are found inside some of the 

 muscle fibers as well as in the cartilage and epithelium. The fat in 

 these tissues bears no special relation to the fat in the adipose tissue 

 cells. No true adipose tissue cells are found until about the 20 cm. 

 stage or later, but long before this stage fat droplets are found in 

 abundance in cartilage cells, muscle fibers, and hepatic cells. During 

 starvation the fat cells are emptied, but the quantity of fat in the 

 other tissues is unchanged. In its development the adipose tissue 

 The American Journal of Anatomy. — Vol. IX, No. 3. 



