QUANTITATIVE STUDY OF THE PURKINJE CELLS 233 



15250 (G. 285), male, age 43 years, mental age three; nervous family; 

 epileptic, had measles and whooping-cough, brain fever at two years; 

 side of face deformed from atrophy of jaw; stooped shoulders; left arch 

 fallen; irregular heart; poor vision, eye fatigue and headache; no 

 abnormal movements; exaggerated reflexes; grip, rt. 21-lt. 23. 



15297 (G. 203), male, age 26 years, mental age eight, apparently 

 normal heredity; two deaths in infancy and two other children feeble- 

 minded; physicians believed defect due to congenital lues; did barn 

 and garden work, grip, rt. 33— It. 31. 



15299 (G. 195), male, age 36 years, mental age two; brain weight 335 

 grams; father probably feeble-minded; this case the first of seven 

 conceptions; two later ones being miscarriages; had whooping-cough 

 and scarlet fever; large head, left scapula higher than right, left testicle 

 undescended; fallen arches; knock-kneed; did no work; grip, rt. 15- 

 It. 17; could not talk, but would swear freely. 



15310 (G. 258), male, age 18 years, mental age four; brain weight 

 1051 grams; ancestry possibly neuropathic; this case Mongolian in type; 

 Wassermann positive; knock-kneed and stoop-shouldered: died of T.B. 

 after extreme wasting away ; left testicle undescended ; normal reflexes ; 

 ate well and played well; left-handed; grip about .18 for each hand; did 

 not alternate feet in climbing stairs; speech poor; subject to headaches. 



15320 (G. 327), female, age 20 years, mental age one; mentality of 

 ancestry doubtful; had large tumor in anterior part of the right hemi- 

 sphere of the cerebellum; began to grow very weak at eighteen years; 

 walking became poor, and a year later had difficulty in swallowing; 

 helpless in both hips and hands, left hand especially weak; pupil 

 reflexes lost, other reflexes exaggerated. 



Subnormal infants. For purposes of comparison, the cerebella 

 of six infants, four negroes and two whites, were studied. These 

 cases are of the type found in charity hospitals where nearly all 

 are below normal and where a very large percentage are illegiti- 

 mate. Out of twenty such cases, where the brain weights were 

 taken, only two brains weighed as much as the average for their 

 age. Consequently, though the point could not be determined 

 individually, we are safe in assuming that they represent a 

 distinctly subnormal group of the population. 



Senescents. The cerebella of five cases of senescence were 

 studied. Enough is known of each of these to make it fairly 

 certain that the changes observed were due primarily to old age 

 rather than to other causes. The age, color, and sex of these 

 are given in table 5, which shows the results of the cell counts. 



Paresis. While making this study, the cerebellum from a 



