396 
other. From the larger nerves innumerable fibrillz cross in 
every direction to supply the surrounding muscular fasciculi. 
Language can convey no adequate idea of the number and 
plexiform arrangement of these proboscidean nerves; and, 
although in this dissection many hundred are brought into 
view, I have no doubt as many more could be displayed, if 
sufficient time could be afforded to the tedious process of ex- 
posing them. The plexiform arrangement of the seventh and 
fifth nerves on the human face, though anatomically and phy- 
siologically analogous to these, yet bears no comparison as to 
size, number, or complexity. From the intimate union between 
the seventh, which is the nerve of motion, and the fifth, the 
nerve of sensation, the greater number of the branches derived 
from these plexuses must be compound filaments, and, there- 
fore, supply the parts to which they are distributed with the 
two endowments, motion and sensation. In this dissection, 
however, I have in several situations unravelled the nerves in 
the plexus to their respective sources, and traced fine filaments 
from the fifth or sentient nerve, inwards to the lining mem- 
brane ; and have also pursued some very large branches of the 
same nerve, undivided, down to within two or three inches of 
the proboscis, where they separate into fine hair-like branches, 
about twenty of which are exposed in one situation, all de- 
scending in parallel lines to the very border of the opening, 
where they branch off into minute filaments, and terminate in 
the subcutaneous tissue. 
‘¢T shall not delay you with any minute account of the 
blood-vessels of this organ, and shall only observe, that they are 
very large and very numerous. Some of the principal trunks 
accompany the nerves, but many others run in channels 
through the muscular substance, and distribute their branches 
to it in every direction. 
‘¢ T shall next place before you a dissection of the cartilages 
of the true nose, which are connected above to the nasal bones, 
and below to the proboscis. These cartilages present a long, 
curved tube, which is convex forwards, and divided into two 
