The following case of amaurotic family idiocy was obtained from the Children's Hospital through the kindness of Dr. John Lovett Morse, and studied under the direction of Dr. F. G. Benedict at the Nutrition Laboratory of the Carnegie Institution of Washington, Boston, Mass.
HISTORY OF CASE
History.—The child, B. D., girl, aged 2 years and 4 months, was admitted to the hospital Nov. 22, 1916. The father and mother, brother and sister were living and well, and were of normal mental and physical development. There was a normal family history.The patient was born of a normal pregnancy and labor, and was breast fed for one year, during most of which time she had a severe facial eczema. At 3 to 4 months she first noticed her hands, but never made any effort to use them except to play with a rattle, when it was placed in them. If