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 . The arm and hand are held firm by a special rest, as indicated in the drawing. Lombard, in a number of experiments with the ergograph upon himself, found thatif he voluntarily contracted a muscle frequently and each time raised a weight withhis utmost force, the muscle weakened and after a time scarcely stirred the if now he continued to make this efi:ort, regard
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 . The arm and hand are held firm by a special rest, as indicated in the drawing. Lombard, in a number of experiments with the ergograph upon himself, found thatif he voluntarily contracted a muscle frequently and each time raised a weight withhis utmost force, the muscle weakened and after a time scarcely stirred the if now he continued to make this efi:ort, regardless of the results, with all thepower of his will, sooner or later the strength of the muscle began to return and tomove the weight almost as much as before. Then the strength would gradually 200 MAN AND ABNORMAL MAN. cease lor a second time; tlius an almost complete loss of power to voluntarily con-tract the muscles, alternated with periods of nearly complete recovery of thestrength. This phenomenon, according to Lombard, was due to the results olfatigue, caused probably by changes in the central nervous system. The writer haemade some experiments with the ergograph, and his results are similar to those Fig. 63. —The ergograph. (Mosso.) There are a number of phenomena in which fatigue causes a periodicity dependingupon the central nervous system. This is probable in the second wind of theathlete. The intensity of after-images is due to periodic variation. Maker, VerdinParis.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashingtongovtprin
