ADIPOSE TISSUE. 
191 
FIG. 145 . 
when injected, exhibit an extraordinary amount of vascu- 
larity. An injected specimen of the blubber of a young 
Porpoise , is represented by Fig. 145. The upper part 
of the preparation, a , ex- 
hibits the non-vascular cuticle, 
into which long papillae, 6, 
project ; below these are seen 
numerous trunks, c, giving 
off capillary vessels which 
belong to the adipose tissue. 
The amount of vascularity, 
therefore, of the blubber of 
a large Whale must be 
truly astonishing, if we may 
judge from this specimen 
from one of the smallest of 
the cetacea. A somewhat 
similar structure to that of 
the blubber of the Whale 
occurs in the Pig , which, 
when salted and dried, 
is known as bacon. In this substance the capillaries, 
when successfully injected, are as numerous as in other 
specimens of adipose tissue. 
The adipose tissue of young animals as in children, 
generally consists of a series of small oval, or circular 
lobules scattered throughout the areolar tissue ; if the 
injection be perfect, it will be found that the capillaries 
of the cells are much smaller than those of the adult 
fid 
efgftr^ 
b b?r : .( 
Vertical section of the skin of 
a young Porpoise: a, cuticle; b , 
papillae ; c, vessels of the adipose 
tissue, or blubber. 
