. Biology and its makers : with portraits and other illustrations. Biology -- History. INTRODUCTION OF THE MICROSCOPE «3 arranged to examine the circulation of blood in the trans- parent tail of a small fish. The fish was placed in water in a slender glass tube, and the latter was held in a metallic frame, to which a plate (marked D) was joined, carrying the magnifying glass. The latter is indi- cated in the circle above the letter D, near the tail-fin of the fish. The eye was ap- plied close to this circular magnifying-glass, which was brought into position and adjusted by means of screws. In
. Biology and its makers : with portraits and other illustrations. Biology -- History. INTRODUCTION OF THE MICROSCOPE «3 arranged to examine the circulation of blood in the trans- parent tail of a small fish. The fish was placed in water in a slender glass tube, and the latter was held in a metallic frame, to which a plate (marked D) was joined, carrying the magnifying glass. The latter is indi- cated in the circle above the letter D, near the tail-fin of the fish. The eye was ap- plied close to this circular magnifying-glass, which was brought into position and adjusted by means of screws. In some instances, he had a concave reflector with a hole in the center, in which his magnifying-glass was insert- ed; in this form of instru- ment the objects wxre illu- mined by reflected, and not by transmitted light. His Scientific Letters.— His microscopic observations v/ere described and sent to learned societies in the form of letters. " All or nearly all tliat he did in a literary way was after the manner of an epistle," and his written com- munications were so numer- ous as to justify the cogno- men, "The man of manv ^i^'- 20a. — Leeuwenhoeks I n u-^i X- ' Mechanism for Examining the letters. IhePrench/Vcad- Circulation of the 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 Locy, William A. (William Albert), 1857-1924. New York : Henry Holt
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyorkhenryholt
