. The science and practice of medicine . uscularpower and tone are ascertained and recorded. The date and the name ofthe patient should be written on each piece of paper, which may be filedaway for reference. The pencil ought to be of the softest lead, and thepaper rough and unsized. The following illustrations of the action of thedynamograph are given by Dr. W. A. Hammond, of New York, and arethe results of his personal experience with the instrument.* * Quarterly Journal of Psychological Medicine, vol. ii, pp. 145, 146. 992 APPENDIX TO DISEASES OF THE NERVOUS SYSTEM. A tracing made by a pers
. The science and practice of medicine . uscularpower and tone are ascertained and recorded. The date and the name ofthe patient should be written on each piece of paper, which may be filedaway for reference. The pencil ought to be of the softest lead, and thepaper rough and unsized. The following illustrations of the action of thedynamograph are given by Dr. W. A. Hammond, of New York, and arethe results of his personal experience with the instrument.* * Quarterly Journal of Psychological Medicine, vol. ii, pp. 145, 146. 992 APPENDIX TO DISEASES OF THE NERVOUS SYSTEM. A tracing made by a person unaffected by any disorder of the nervoussystem involving loss of muscular power, is a straight line. Dr. Ham-mond found the same tracing made by a patient suffering from locomotorataxia (Fig. 88). Fig. 88. Fig. 89 represents the tracing made by a lady suffering from righthemiplegia with aphasia. Though the line is irregular, there is no actualdecline in it, the point of ending being really higher than the point ofbeginning. Fig. A gentleman affected with congestion of the meninges of the spinalcord made the tracings in Fig. 90 with his left hand. There is a progres-sive fall in the wave line. Fig.
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