Abstract
The general law that progress in any direction is characterized by specialization, with its attendant classification and simplicity, has been exemplified in no great movement more strongly than in the development of the medical profession during the last three decades. The late Samuel D. Gross, foremost general surgeon of his day, after a long period of active service as author, teacher and practitioner, writing the preface to the sixth edition of his System of Surgery in October, 1882, thus early gives credit to specialization for the unparalleled advances in modern surgery. Specialization, he says in substance, has penetrated with its methods and instruments of research the innermost recesses of the human body, and in a comparatively brief period has achieved triumphs which general surgery perhaps never would have accomplished. In the earlier period when the specialist confined himself to a particular organ, disregarding its relations to the general system, when

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