File:Various types 1 (details B & C, hydrocephalus).jpg

C. D. (Middle-Grade Imbecile). Photo taken when 25 years old. Nothing is known of his parentage; he is a waif and stray. He has pseudo-hypertrophic muscular atrophy, and is forced to use crutches. He has slight chorea. There are some stigmata of degeneration; the head is hydrocephalic, measuring 2574 inches in circumference. He is very nervous, and laughs and weeps without cause. He is slow of speech, vulgar, passionate, heedless of danger, and sexually exaggerated. He is fond of music, can catch a tune easily, and has picked up yodeling, which he does exceedingly well. He recognizes color and form, can read a letter, and can count to one hundred, but he cannot learn to write or draw. His memory is excellent, but his powers of imitation and attention are only fair. When infuriated, he is very abusive and vin- dictive, and threatens to kill. He will read the Bible and swear at the same time. When placed in the shoe-shop, after much pains he learned to polish the “uppers” of shoes, which is the limit of his ability. CASE C.--HYDROCEPHALIC. C. E. (Idio-Imbecile)—was 29 years old when photo was taken. The head is 2772 inches in circumference. Mark the degenerate ear; especially the double tragus. An uncle is in an insane hospital. The father, a machinist, was 36 and the mother 30 years old at the birth of this, their eighth child. Four brothers and two sisters are living; four others are dead. C's birth was easy. He is said to have been normal until six months old, when hydrocephalus began. He did not walk until seven years old. His sight, hearing and speech are normal. He is talkative, destructive, and very vulgar. He was able to wash and dress himself, and also to wash and dress another child. He developed epilepsy when