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The microscope made easy : or, I. The nature, uses, and magnifying powers of the best kinds of microscopes described, calculated, and explained ... II. An account of what surprizing discoveries have been already made by the microscope: with useful reflections on them .. (1742)

Baker, Henry, 1698-1774, History of Medicine Collections (Duke University) NcD · London : Printed for R. Dodsley, at Tully's Head · leaf 44

An illustration from The microscope made easy : or, I. The nature, uses, and magnifying powers of the best kinds of microscopes described, calculated, and explained ... II. An account of what surprizing discoveries have been already made by the microscope: with useful reflections on them .., 1742, leaf 44
Partsof the Apparatus. A leffer Tube e e, Aides into the greater,and fends from its Bottom another Tubemuch fmaller than itfelf, f with a maleScrew gy at the End thereof, whereon tofcrew the Object-Glafs or Magnifier. There are rive of thefe Magnifiers, num-berd i, 2, 3, 4, 5, which Numbers are… … The Double RefleSting Micro/cope, ij or lower, or turn the Screw of the Magni-fier gradually, till the Object appears dif-tinct. Take notice, that the greateit Mag-nifiers have the fmalleft Apertures and thelowed Numbers. L. is a circular Plate of Brafs, fixt hori-zontally between the three Brafs…

Microscopy

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