242 
Histology of the Eye. 
rMonthly Microscopical 
L Journal, Nov. 1, 1869. 
iris, branclied pigmented corpuscles, wliicli hang together in nets 
and membranes, and send off long and very fine elastic fibres. The 
Fig. 11. 
Chorio-capiUaries. 
thin layer of looser tissue external to the large vessels— the lamina 
fusca — has an essentially similar structure. 
Besides the branched and irregular pigment-cells, the stroma 
always contains many pale, inconspicuous, roundly oval, and round 
cells and nuclei, of about the size of lymph-corpuscles, which in- 
crease considerably in number in inflammation, and which are, I 
think, the tissue out of which the formed elementary products of 
inflammation are evolved. 
The nerves which we meet with in the choroid come from the 
ciliary ganglion ; they lie quite on the outer surface, often in 
grooves in the inner surface of the sclerotic; and they all pass 
forwards to the plexus on the outer surface of the ciliary muscle. 
"Whether any are distributed to the choroidal tissues has not yet 
been made out with certainty ; but there is this in favour of it, 
that in the posterior segment very fine bundles of fibres, as well as 
single tubules, occur. 
In both the choroid and in the ciliary plexus, pale as well as 
