436 
DE. D. FEEKIEE ON THE BEAIN OF MONKEYS. 
Took some food offered to it, but after eating a little set to work to scatter it all 
about. 
10.15 p.m. Is found clinging to its cage with hands and feet, apparently asleep, and 
takes no notice of my approach. 
January 15 th. — 10.30 a.m. This morning when taken out seemed unwilling to move 
about. When roused and pushed, seemed to walk somewhat unsteadily, and as if its 
limbs were clogged. 
Thinking that the motor centres were becoming involved in softening, I chloroformed 
the animal to death. 
Post mortem Examination . — On examination of the brain it was found that the frontal 
lobes had been cut off on both sides according to the line indicated, viz. in a line passing 
transversely through the anterior extremities of the supero-frontal sulci. The plane of 
section sloped somewhat from above downwards, leaving the posterior half of the orbital 
surface uninjured. 
The cut surface was projecting so as to protrude through the openings in the skull 
and reach the under surface of the scalp. 
Some degree of softening had extended from the edges of section on both sides to the 
proximity of the antero-parietal sulcus, but slightly more on the left than on the right 
side (see tigs. 2 & 3). The rest of the brain was round in appearance. The olfactory 
bulb and tract on both sides had escaped injury. 
Figs. 2 & 3 represent the upper surface of both hemispheres and side view of the left hemisphere of the 
brain of the monkey. The line cutting across the frontal regions at the anterior extremity of the supero- 
frontal sulci indicates the line of section of the lobes in Experiment II. The parallel lines indicate the extent 
of brain-substance removed. The shading posterior to the line indicates the extent to which softening had 
advanced, b = the antero-parietal sulcus (Htjxley). 
