EXPLANATION OF PLATES. 

 Plate I. 



Fig. 1. From a section of the liver of a 7 cm. foetus. The fat droplets 

 ill this aiid the succeeding figures are colored red. an, annular fat droplet ; 

 //. hepatic cell — those near the vein (F) are filled with fat droplets. Fixa- 

 tion, 20 per cent formalin. Frozen section stained with Scarlet red and 

 hsem. X 800. 



Fig. 2. Cartilage cells from the centrum of a vertebra of a 10.1 cm. foetus. 

 Fixation, 20 per cent formalin. Frozen section stained with Scarlet red. 

 X1300. 



Figs. 3 and 4. Cross-section of muscle fibers of psoas muscle of a 17 cm. 

 foetus, showing fat droplets in the interior. Fixation, 20 per cent formalin. 

 Frozen section stained with Scarlet red. X 1300. 



Fig. 5. Cartilage cell from the innominate cartilage of a 17 cm. foetus, 

 showing many fat droplets. Fixation, 20 per cent formalin. Stained with 

 Scarlet red and haem. x 1300. 



Fig. S. Renal preadipose tissue from an 18.5 cm. foetus, f, fine fibrilloe; 

 71. nucleus: ?>r, process of cell; s, space. Fixation, Zenker's fluid. Stained 

 heavily with iron-h.iem. and not decolorized. X 800. 



