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The author has brought the subject down to the present in this edition. The subject matter is simply presented and should be useful for those desiring a brief authoritative presentation of the graphic methods of studying heart action. The description of the principles of recording instruments employed is especially to be recommended as well as the section on the venous pulse. The author avoids polemic material and presents a purely objective account of the prevalent views and his own inclinations. The utility of the book for non-German readers is greatly lessened because the instruments described are limited for the most part to those of German manufacture, which are little used in this country. However, the excellent discussion of principles of these instruments is applicable to all similar apparatus. The author's endeavor to present practical details in using instruments, based on his own experience, is a particularly useful approach. It is
Die Elektrokardiographie und andere graphische Methoden in der Kreislaufdiagnostik. JAMA. 1935;105(11):908. doi:10.1001/jama.1935.02760370064035