132 
HISTOLOGY OF ANIMALS. 
the lens, the whole capsule is covered with vessels, and 
if it should so happen in the course of the dissection 
that the anterior layer he detached from the posterior, 
this anterior layer would be described as the membrana 
pupillaris ; but if the lens come away entirely covered 
with vessels, no such membrane is found. The vessels 
from the posterior capsule, as before stated, when they 
reach the iris, divide into two sets of branches, one of 
which joins the vessels of the iris, the other those of 
the anterior capsule. These points are readily seen 
in specimens from the eye of the Kitten , Wolf, and 
Puppy , as well as in many other animals, which it is 
unnecessary here to mention. 
We now proceed to describe the vessels of white 
fibrous tissue. The specimen represented by a , in 
Fig. 107, is a portion of the tendon of an Ostrich ; the 
arrangement of its capillaries 
is very like that of muscle, 
the vessels are straight, and 
connected by branches more 
or less oblique ; each vessel 
runs in the areolar tissue be- 
tween the bundles, but never 
amongst the white fibres 
themselves. The number of 
the vessels in a tendon is 
very small as compared with 
those of the muscle to which 
it is attached, and in all injected specimens as in the 
FIG. 107 . 
a , vessels of the tendon of an 
Ostrich ; h c, vessels of muscle 
and tendon of rectus externus of 
the Ostrich. 
