Red blood cells and vessels by van Leeuwenhoek, described in a letter of 1700. Across top are red blood cells (erythrocytes) from a salmon (top left)
Red blood cells and vessels by van Leeuwenhoek, described in a letter of 1700. Across top are red blood cells (erythrocytes) from a salmon (top left) and a flounder, with wax models of red blood cells at left. The main drawing shows red blood cells in a vein (left) and artery (right) connected with capillaries. Dutch scientist Antonie van Leeuwenhoek (1632-1723) built his own microscopes and was able to study the natural world in greater detail than was previously possible. His observations included protozoa, bacteria, insects, plants, minerals, blood cells, and sperm. His earliest observations were published in 1673, and over the next 50 years he self-published and wrote hundreds of letters detailing his discoveries. This page is from Letter 128 to Hans Sloane (written 9 July 1700) and later published in 'Sevende Vervolg' (1702).
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Photo credit: © LIBRARY OF CONGRESS, RARE BOOK AND SPECIAL COLLECTIONS DIVISION/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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