1. The numbers refer to those of Table B.
2. “Convolutional Pattern of Relative Brains in Man,” Proc. Roy. Soc. Med., 1917 ; Id. in “Identical Twins” (Philosoph. Trans, of the R.S., 1916). F. Sano.—
3. The brain of this interesting case was sent to Lt.-Col. Mottby Dr. Caldecott, who handed it to Dr. Sano for investigation, who acknowledges with gratitude a grant from the Medical Research Committee of the National Health Insurance.—
4. A. F. Tredgold, Mental Deficiency, second edition, London, 1915. Contains a complete record of Pullen's activity, illustrated by numerous figures. The figures which I give in this paper have not hitherto been published.—