194 Darwin, and after Darwin. 
Fic. 86.—Comparative series of Brains. (After Le Conte ) TI i 
above downwards, and represents diagrammatically the ae ofa Fish ie 
a Bird, a Mammal, and a Man. _ In each case the letter A marks a side view, and 
the Ietter B a top view. The small italics throughout Seniy the following homo- 
logous parts: 22, medulla; cd, cerebellum; of, optic lobes; 
thalamus; o/, olfactory lobes. The series Bowes Praptesciae een res se 
enlargemert of the brain in general, and of the cerebrum and cerebellum i 
particular, which likewise exhibit continually advancing structure in respect if 
convolution. In the case of Man, these two parts of the brain have own to 
reat a size that they conceal all the other parts from the superficial ete of vi ay 
represented in the diagram. B ad 
