AREOLAR TISSUE. 
129 
place, — the greater part 
FIG. 105 . 
a a b, fibre forming cells of 
areolar tissue ; c c, stellate cells 
from a tumour in connection with 
the parotid gland ; d, yellow elas- 
tic fibres seen in areolar tissue 
after the action of acetic acid ; e, 
areolar tissue from the vessels at 
the base of the brain of a Sheep. 
of the white fibres disap- 
pear, and nothing but long 
imperfect oval cells or nuclei 
remain ; these, however, as 
shown by d in Fig. 105, 
indicate the direction pre- 
viously occupied by the fibres. 
The yellow element undergoes 
no change when treated with 
the acid, and its fibres there- 
fore stand boldly out, being 
as it were isolated from the 
surrounding white fibres, and 
exhibiting all the peculiar cha- 
racters I have already de- 
scribed as belonging to this 
form of tissue. The yellow 
elastic tissue agrees in all 
points except in greater mi- 
nuteness with that of the 
ligamentum nuchae of the 
Sheep . When areolar tissue is growing rapidly, as 
in tumours, the cells from which it is developed are 
often seen ; some of the principal varieties are repre- 
sented by a b , in Fig. 105, they are mostly of a fusi- 
form figure, and what was once the cell-wall, in process 
of growth becomes a mass of fibres. In tumours con- 
nected with the parotid gland, I have more than once 
K 
