Abstract
The term idiocy is applied to a condition presented by certain children of retarded development manifesting peculiar mental and physical phenomena, the most remarkable of which is the resemblance to the Mongolian facies. The mongolian idiot resembles the Mongolian in the oblique palpebral fissure, epicanthal fold, widely placed eyes, flat-bridged, snub nose and expanded ali nasi. Brachycephaly is present in both; but the flattening of the occiput is characteristic of the idiot. The mongolian idiot differs physically from the Mongolian in the squat hand with tapering fingers, short thumbs and short, incurvated little fingers, the second phalanx of which is shorter than the terminal. His hair is not usually black, although it may be straight and is often wiry. The face is broad, but it is moon shaped and has no prominent cheek bones. He is small in stature and has broad, flat feet. There is marked hypermobility of
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