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The paper gives the results of the author’s observations on human muscular riations observed during the last fifteen years, and extending over upwards f six hundred subjects. Many of the more striking varieties were drawn the author from the subject, and form a series of thirty-seven illusations accompanying the paper. Some of them he has not found placed record by any authority he has consulted. The author classifies these muscular variations as follows, viz. :─
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John W. Wood (1864) studied this question.
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