Continued discussion of the anatomy of the human brain. Comparative anatomy was seen between the human brain and those of lower animals. The division of the brain in left and right halves, along with the cerebrum, cerebellum, and medulla was discussed. The affect of convolutions on increasing surface area and numbers of neurons was discussed. The function of the frontal lobe and an early experiment to show the affect of stimulation on specific areas of the sensory and motor regions was discussed.