Archive image from page 91 of The discovery of the circulation The discovery of the circulation of the blood; by Charles Singer discoveryofcircu00sing Year: 1922 PLATE VIII FIG. i. LUNG OF FROG, MAGNIFIED, SHOWING CAPILLARIES. From MALPIGHI. FIG. 2. CAPILLARY NETWORK IN TAIL OF EEL. FVom LEEUWENHOEK. A, C, E are Veins, and B, D, F are Arteries. FIG. 3. RED BLOOD CORPUSCLES OF SALMON. From LEEUWENHOEK. FIGS. 4 AND 5. HUMAN RED BLOOD CORPUSCLES. From LEEUWENHOEK. FIG. 6. HUMAN RED BLOOD CORPUSCLES DRAWN FROM THE OBJECT UNDER A MODERN MICROSCOPE.

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