Anatomical manipulation, or, The methods of pursuing practical investigations in comparative anatomy and physiology : also an introduction to the use of the microscope, etc., and appendix (1844)
Tulk, Alfred, d. 1891, Henfrey, Arthur, 1819-1859 · London : Van Voorst · leaf 124
thus, thespherical error of the eye-glass almost perfectly balancesthe chromatic dispersion of the field-glass, jjg, 3 9 and the rays N N emerge nearly parallel.This holds good in all the intermediatecolours and pencils. 167. When the magnified image istobe measured, the micrometer eye-pieceof Mr.… … 106 MECHANICAL CONSTRUCTION. plate of glass with engraved divisions of y^tli of aninch or less. These lines come into focus with the imageof the object, so that they are seen together, and themeasure of the magnified object is found at once. CHAPTEE II MICKOSCOPES AND THEIR APPARATUS. SECT.…
Anatomy, Comparative · Dissection · Microscopy
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-352-40.webp)
