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The Digital Circulation.

AMA Arch Intern Med. 1955;95(6):878. doi:10.1001/archinte.1955.00250120114030.
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This book is a concise, organized presentation of all the available data on digital circulation. The preface contains the historical background from Hippocrates to the present. One chapter is devoted to each basic subject (anatomy, physiology, pharmacology, pathology) as it applies to digital circulation. Under physiology, Dr. Mendlowitz presents humoral and nervous control, as well as local factors, metabolism, hydration, anoxemia, emotion, and thermal changes, which exercise control over vascular caliber. He discusses the effect on vasomotor tone of 24 blocking drugs and 15 stimulating drugs. The chapter on pathology consists chiefly of stained microscopic sections, photomicrographs, drawings, and arteriograms.

Under the heading of methods, capillaroscopy is described and illustrated and plates of the nail-fold capillaries in health and disease are shown. Blood pressure methods are described, including the Goertner capsule, digital blood pressure cuff, double cuff technique, flushing technique, and microinjection method. Skin temperature measurement methods (thermocouples, thermopiles, resistance


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