. Elements of human physiology. Physiology. THE VASCUIiAR MECHANISM 203 one side covered in by a piece of elastic membrane. Through this membrane passes a writing-point which has an oar-shaped enlargement within the tube. On placing the tube in the course of a blood-vessel so as to allow blood to flow Fig. 105. '<^ Hsemodromometer of Volckmann. through it, the blood-current causes a deflection of the flattened extremity of the lever which, communicated to the arm outside the tube, can be recorded on a blackened surface. Fig. Diagram to show principle of construction of Cybulski's phot
. Elements of human physiology. Physiology. THE VASCUIiAR MECHANISM 203 one side covered in by a piece of elastic membrane. Through this membrane passes a writing-point which has an oar-shaped enlargement within the tube. On placing the tube in the course of a blood-vessel so as to allow blood to flow Fig. 105. '<^ Hsemodromometer of Volckmann. through it, the blood-current causes a deflection of the flattened extremity of the lever which, communicated to the arm outside the tube, can be recorded on a blackened surface. Fig. Diagram to show principle of construction of Cybulski's photo- hsematachometer. A much better instrument for this purpose is the plwtoluTmatachometer of Cybulski (Fig. 106). If a current of blood be directed along the tube ab. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Starling, Ernest Henry, 1866-1927. Chicago : W. T. Keener
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