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meaning. This was really the way to study anatomy, viz. to 
regard the various facts in connection with other facts, and so 
as the bases of scientific deductions. Prof. Humphry was glad 
to hear the nerves thus made the exponent of cranial morpho- 
logy, for he had attempted the same thing many years ago in a 
paper read at the British Association at Leeds, when he endea- 
voured to shew that the fore limb was not, as supposed by Prof. 
Owen, an appendage to the skull, but formed independently from 
it. He then shewed, from a consideration of the distribution of 
the cranial nerves, that the hyoid and not the scapula is the 
visceral arch of the occipital, and that the mandibular, the 
pterygo-maxillary and the ethmo-vomerine arches are the re- 
spective visceral arches of the post-sphenoidal, the pre-sphenoidal, 
and the ethmoidal parts of the skull. This view he believed to 
be in the main correct. The nerves respectively supplied to 
them are the ninth and the three divisions of the fifth. Each 
of the latter is very closely confined to its particular visceral 
arch, sending a special nerve to each bone of its arch, or nearly 
so, whereas the seventh pair of nerves is more promiscuous in 
its distribution, being supplied to muscles disposed upon all the 
four visceral arches, and having connecting links with the spinal 
nerves of those arches. It was to the orderly disposition of these 
connective links in relation to the visceral arches that Professor 
Huxley had now called their attention. Professor Humphry 
remarked that the communication between different nerves, 
which is a means of establishing the harmonious action of the 
several muscles supplied by them, was effected in three ways. 
First, by junction of their terminal branches. This is most 
common in the lower animals. Secondly, by plexuses near their 
origin from the brain and spinal cord, which are found, to some 
extent, in the lower animals, but which are more numerous in 
the higher animals. Thirdly, by means of ganglia. This last, 
which may be regarded as the most perfect. method, is almost 
confined to the higher animals. Accordingly the communicating 
