ROME ON THE ANATOMY OP THE OLPATORY LOBES. 287 
the power of maintaining the erect position, exhibited in the slow 
moving Bears, or, as others suppose, the rapid combination of motor 
energy, manifested in the Tiger’s unerring spring, or the Monkey’s 
airy gambols) are to be regarded as the external indications of the 
power either of “ co-ordination of movements,” or of the apprecia¬ 
tion of “ muscular sensibility indispensably necessary for the perfor¬ 
mance of complicated muscular efforts.” 
XXVII.— On the Anatomy op the Olpactory Lobes in certain 
op the Mammalia. By James Borie, M.D. Dundee. 
To the Anatomist and Physiologist, the Olfactory Lobes present an 
interest greater than any other individual portion of the nervous 
system, the spinal cord perhaps alone excepted. Prom their com¬ 
paratively isolated condition in many Mammalia, the examination is 
easily conducted, and in consequence of their immediate relation 
with an organ of special sense on the one hand, and with the brain 
proper on the other, a correct knowledge of their anatomical, details 
may be considered as affording, in a great measure, a key to the 
complex arrangement of nerve fibres which constitute the greater por¬ 
tion of the encephalon, and which has as yet almost completely 
baffled enquiry. 
The most recent information on the anatomy of the olfactory 
lobes, so far as I am aware, is that afforded by the researches of Ph. 
Owsjannikow. # The results at which he has arrived, and which may 
be regarded as representing the present state of our knowledge on 
the subject, may be summed up as follows:— 
1. That in each olfactory lobe a cavity exists, lined by cylindrical 
epithelium. 
2. That the grey matter of these organs is composed of multipolar 
nerve-cells, from which nerve-fibres pass, some to be distributed on 
the mucous membrane of the nasal cavities, and others inwards 
towards the brain proper, terminating in the nerve-cells in the grey 
matter of the cerebrum. 
3. That no commissural fibres could be detected passing between 
the two olfactory lobes. 
The following details, embracing the results at which I have 
arrived, may not be altogether devoid of interest, for while, to a cer¬ 
tain extent, they confirm Owsjannikow’s observations, in other 
respects they differ from them very essentially. The cavities to 
which the above distinguished observer refers, I have only found to 
exist in animals which have not reached maturity. In the young 
* Meclico-Chirug. Review, No. 54. 
