Man and abnormal man, including a study of children, in connection with bills to establish laboratories under federal and state governments for the study of the criminal, pauper, and defective classes, with bibliographies . FlG. 75.—Dynamograph. (Duchfine.) terical subjects experience at the view of a ray of light. It is in reality a dynamometerof Duch^nes, with a tambour. A, attached to it, so that the results may be recorded MAIS AND ABNOKMAL MAN. 207 on a cylinder, as indicated in the cut. The dynamograph is used also to show theaffects of sound and color upon strength of grasp. In sound th
Man and abnormal man, including a study of children, in connection with bills to establish laboratories under federal and state governments for the study of the criminal, pauper, and defective classes, with bibliographies . FlG. 75.—Dynamograph. (Duchfine.) terical subjects experience at the view of a ray of light. It is in reality a dynamometerof Duch^nes, with a tambour. A, attached to it, so that the results may be recorded MAIS AND ABNOKMAL MAN. 207 on a cylinder, as indicated in the cut. The dynamograph is used also to show theaffects of sound and color upon strength of grasp. In sound the pitch has effect. Fig. 76.—Dynamometer. (Ulmann.)upon the greatest strength of grasp. Smell and taste have their effects upon thestrength. Maker, Verdin, Paris. In fig. 76 is a form of dynamometer that avoids the unpleasant cutting feelingcaused by the handles of the ordinary dynamometer. Maker, Windier, Berlin. DYNAMOMETER OF CHERON AND VERDIN. One of the inconveniences of the ordinary dynamometers is the pain experiencedwhen one tests his strength of grasp five or six times in succession, for the edges of
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