262 
DR. PHILIP’S OBSERVATIONS ON 
cu instances, and from his mind having been more particularly directed to the 
subject, is in several respects better fitted than others for reviewing the infe- 
rences, he hopes the following observations will not be unacceptable ; especially 
as they are such as would naturally have made part of my former papers, 
had it not appeared to me better to confine myself to a simple statement of 
the facts, till the whole had been laid before the Society. 
Idle present paper is offered to it for the purpose of supplying what may be 
regarded as a defect in those papers, and also as the conclusion of the Inquiry 
in which I have been so long engaged. I am fully sensible of the vast extent 
of the subject, and that it is only the great outline which I have attempted to 
trace. If this has been accurately laid down, my object has been accomplished. 
The nerves may be divided into two classes, those which proceed directly 
from the brain and spinal marrow to the parts to which they convey the in- 
fluence of these organs ; and those which enter such ganglions as receive 
nerves proceeding from different parts of the brain and spinal marrow, whether 
these nerves have or have not protuberances belonging to themselves which 
have also been termed ganglions, but which receive only the different fibres 
that belong to the particular nerve to which they are attached, and from the 
circumstances in which they are placed, must have a different or at least a 
more confined relation to other parts of the nervous system. To the former, 
therefore, I shall for the sake of distinction, and to avoid circumlocution, con- 
fine the term ganglion. 
I beg leave to lay before the Society the following extract from lectures 
delivered by Mr. Brodie before the College of Surgeons, and which have not 
yet been published, in which this accurate anatomist and physiologist has 
given the sum of our knowledge respecting the structure of the ganglions. 
“ Those bodies which arc found in certain nerves which appear to be formed 
by an enlargement of the nervous substance, and which are denominated 
ganglia, are of a complicated structure. Into ganglia the nervous fibres may 
be traced, and from these ganglia the nervous fibres again emerge. Scarpa 
has paid much attention to the fabric of the ganglia, and he gives the follow- 
ing history of it. He says that the fasciculi of nervous filaments which enter 
a ganglion are separated and divided from each other, and that they are com- 
bined anew. A nervous fasciculus entering a ganglion divides into smaller 
