8 
Sir Everard Home on the 
Here I shall conclude the present Lecture, neither Mr. 
Bauer’s time nor my own having admitted of our proceeding 
farther in this curious and interesting anatomical investigation, 
which I am not without hope, in the course of another year, of 
our rendering as complete as microscopical observations admit 
of, by examining the nervous system of a class of animals in 
which the existence of a brain has not been ascertained. 
Till that is done, I must postpone any physiological remarks 
connected with the subject, all the facts belonging to it not 
having been determined. 
EXPLANATION OF THE PLATES. 
Plate I. 
Fig. 1. A small portion of the human cerebrum in a recent 
state, which had been immersed in distilled water ; magnified 
five diameters. 
Fig. 2. A smaller portion, magnified twenty-five diameters; 
showing the arrangement of the globules, in straight lines, 
which pass uninterruptedly across the cortical substance into 
the medullary. 
Fig. 3. A still smaller portion, magnified two hundred 
diameters, by which means the globules are rendered con- 
spicuous. 
Fig. 4. The brain of a tench, of the natural size. The 
cranium is removed, and the upper surface of the brain ex- 
posed to view. 
Fig. 5. The under surface of the same brain. 
Fig. 6 . A horizontal section of the same brain ; showing 
that the nodules have a cortical substance internally, and a 
medullary on the outer part. 
