XVI. On the proportions of the several lobes of the cerebrum in man and in certain of the higher vertebrata, and on an attempt to explain some of the asymmetry of the cerebral convolutions in man

1. I desire to communicate to the Royal Society the fact that I have, by severing the cerebral hemispheres in certain definite directions in Man, and also in some of the higher Vertebrata, and by then weighing the separated portions, not only arrived at some interesting and important results as to the relative size of those portions in different animals and in Man, but I am enabled to state that this method, applied to the brains of individuals of different race, sex, age, education, and occupation, seems likely to furnish a means of investigating individual peculiarities in the human cerebrum. I propose shortly to communicate my results to the Society. 2. I have likewise made numerous observations on the convolutions of the human brain with the view of explaining their symmetry in certain regions, and their asymmetry in others. In endeavouring to trace more particularly the causes of the asymmetry of the convolutions which prevails in Man, I have been led to believe that some, at least, of this is due to the right-handedness of Man.