on the Functions of the Brain, 
His head aches when exposed to heat. He has had no illness 
since the small-pox. His sleep is easily broken : he never dreams. 
He is fond of reading and writing ; has a taste for poetry, 
and can repeat verses out of Cowper. His memory of com- 
mon things is very good. He never expressed any attach- 
ment or passion for women. He is of a mild disposition; but 
when irritated, his whole frame is in a state of agitation, which, 
however, soon goes off. 
In another boy, the enlargement of the head was perceived 
at three months, and increased for three years ; and then ap- 
peared to be stationary, and the child till that period was sen- 
sible. The upper part of the skull from that time began to 
ossify, and in three years more there was only an irregular 
space at the fontanelle, and a small space between the two 
portions of the os fronds remaining open. The child con- 
tinued sensible till three years old, and then became gradually 
less so, did not know what it did ; heard sounds, but could not 
see. At six years old he died. 
The child was three feet three inches high, the skull twenty 
seven inches round ; the water contained in the two lateral, 
and third ventricles was six ale pints and a half in quantity. 
The cerebrum formed a thin case of medullary substance sur- 
rounding this cavity. The cerebellum was entire.* 
• The lining of the lateral ventricles was tough ; the septum lucidum elongated so 
that the corpus callosum was raised up close to the skull, the falx of the dura mater 
being nearly obliterated. The water in the third ventricle had split the fornix and 
septum lucidum into two, and the thin membranes of the septum had holes in them, 
making a communication between the third and lateral ventricles. The substance 
of the brain surrounding those cavities, as well as the pia mater covering it, had 
no convolutions ; there was one continue ! smooth surface. On the right side, 
upon which the child was usually laid, there were no remains of medullary or 
