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 . Fig. 77.—Dynamometer of Ch6ron and handle produce a cutting sensation, thus rendering the experiments of much lessyalue for comparison. 208 MAN AI^D ABNORMAL MAN. The dynamometer of Charon and Verdiu (see fig. 77) has been designed to eliminatethe inconvenience above mentioned. The fingers are placed upon a handle roundedupon all sides; the palm of the hand rests
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 . Fig. 77.—Dynamometer of Ch6ron and handle produce a cutting sensation, thus rendering the experiments of much lessyalue for comparison. 208 MAN AI^D ABNORMAL MAN. The dynamometer of Charon and Verdiu (see fig. 77) has been designed to eliminatethe inconvenience above mentioned. The fingers are placed upon a handle roundedupon all sides; the palm of the hand rests upon a round oval plate A, serving as ahandle, which is fastened to a piston and spring connected by a cogwheel and barC, with the pointer upon the dial. This dynamometer can be changed to a dynamo-graph, as indicated in the figure, by the addition of a tambour D. The maker ic-Verdin, of Paris. scriptukes dynamometer. Dr. Scripture, of Yale University, has invented a new dynamometer and the scaleof effort. The thumb and index finger are pressed on small knobs borne by two. Fig. 78.—Back, chest, aud leg dynamometer. (Pfarre steel rods; the amount of movement is small, while the scale can be made very accu-rate. To transform the psychophysical measurements into purely psychologicalones, Scripture proposes to have the subject give his own scales of pressure in therelations of 1, 2, 3, 4, etc., and to reduce all readings to the scale. CHEST AND BACK DYNAMOAIETER. The dynamometer (fig. 78) may be used to measure the strength of arms andstrength of lift. If the handle is unfastened at 15 and the hook at C from the instru-ment proper, and with the instrument thus disconnected the two handles A A arepressed against by the hands, the strength of arms and chest can be measured. MAN AND ABNORMAL MAN. 209 With ones elbows extended at the sides until the forearms are on the same hori-zontal plane, and holding the dynamometer so that the dial will face forward andthe indicator ppint upw
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