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loose plexus (at places perhaps a network) with wide meshes of 
nervous non-medullated or partly medullated fibres, that end in 
distinct sheathed bulbous or coiled-up terminations; some of these 
are shown in fig. 2 (a and 6). Since these nerve-fibres and their 
terminations lie in the connective-tissue around bundles of the 
plain muscle-cells and remain entirely independent of the muscle- 
cells, they must be regarded as the free nerve-endings of sensory 
nerves, which are already described by AGaBaBow as being distri- 
buted in large numbers throughout the whole of the corpus ciliare. 
In the second place we see in the musculus ciliaris a very fine 
plexus and network of very fine non-medullated nerve-fibres, with 
small meshes, lying between the muscle-cells, which at first sight 
seems to be of a bewildering complexity. Only gradually one learns 
to find one's way in the mass of extremely delicate black-stained threads 
running to and fro between the muscle-cells, and then it becomes 
clear, that this plexus contains in the first place the network described 
by AGaBaBow, consisting of fine varicose nerve-threads, running 
between the muscle-cells, surrounding these cells, encircling them 
with smaller and longer meshes of extremely delicate fibrils and 
more or less thickened points of junction. At these points, visible 
in methylene blue-preparations as knots of a homogeneous blue colour, 
the neurofibrillar apparatus appears, when studied under the highest 
power, to be broken up into an extremely fine network of fibrillae. 
In fig. 2 at c a mesh of this network, magnified 2100 diameters 
is drawn. This network is the terminal network of AGABaBow. But 
now a close study of the sections soon reveals the fact, that this 
network, which encircles the muscle-cells, is not the terminal nervous 
apparatus. From the nerve-threads composing the meshes of this 
network, lying between the muscular elements and encircling them, 
are branched off at all points extremely delicate neurofibrillae, fine 
filaments having only a diameter of several millimicra, but appearing, 
thanks to the splendid impregnation of the sections, as distinctly 
visible black-stained threads of the greatest tenuity. Only these threads, 
that form a second network or plexus, exhibit the ring-shaped 
varicosities, the end-rings and small terminal nets, which must be 
regarded as the real terminations of the nervous apparatus. Some 
of these end-rings are drawn from the sections in fig. 2, d—/. But 
the fact, which interests us chiefly here, is that these end-rings (the 
termination of these final nervous branches is chiefly in the form 
of small rings or loops) are found lying @traprotoplasmatically inside 
the muscle-cells, and the fine fibrillae, composing this second network, 
form a reticulum in the protoplasm of the muscle-cells, encircling 
