1815.) New Combinations with the Camera Lucida. 283 
_— 
distributed over the paper which is placed to receive the design. I 
will be ‘necesssary to support the paper as nearly as possible paralle 
to the axis of the telescope. 
If you judge these observations deserving of public diffusion, 
they are much at your service; and a candid notice of them in your 
Journal, will oblige, 
Sir, your most obedient servant, 
W. G. Horner. 
ArTIcLe VI. 
An Attempt to systematizxe Anatomy, Physiology, and Pathology. 
By Alexander Walker. 4 
(fo Dr. Thomson.) 
SIR, 
Tue value you yourself have attached to the systematization of 
chemistry convinces me that you will not view with disregard a 
similar attempt in anatomy. To you I need not say that the placing 
on the title-page of a work the word “ System,” does not convert 
the ill-arranged facts and reasonings of any science into a real 
system. ‘That word expresses the arrangement of these facts and 
reasonings according to their natural relations; and in that sense 
there is certainly no system of Anatomy. In that science, the dis- 
covery of these natural relations has long been an object of my in- 
vestigation ; and the views I have taken in the present paper veing 
to me more satisfactory than any which have hitherto suggested 
themselves to me, I shall be happy if they prove not unsatisfactory 
to your readers. 
The arrangements of the present paper being intimately allied 
with, and in a great measure founded upon, the facts and reason- 
ings contained in my Sketch of a General Theory of the Intellectual 
Functions of Man and Animals, inserted in two of your former 
numbers, the simplicity, the accuracy, and the extensive applica- 
bility, of these arrangements, will ajfore the best and most striking 
proof at once of the truth and of the originality of that theory. 
It is unquestionable that a correct arrangement of anatomy and 
physiology, or rather of the organs and functions which they con- 
sider, ought to indicate, at a single glance, the relations of all these 
organs and functions to, and their dependence upon, each other. 
Yet is this principle uniformly violated by the best anatomical and 
physiological writers. 
A single remark will at once point out the errors of arrangement 
whieh 1 deprecate, and show the originality of the plan which I 
propose. It is evidently unnatural to consider the brain before the 
organs of sense whence impressions are transmitted to it; the organs 
9 
“” 
