Beale, Lionel S. (Lionel Smith), 1828-1906 · London, Harrison · leaf 56
[To face page 14. J PLATE X. … [To follow Plate IX.] WITH THE MICEOSCOPE. 15 (Pig. 28) for fixing the preparation in any particular position,and an aperture for throwing the light on opaque objects. Thepreparation is kept in contact with the flat surface below by aspring, which allows the requisite movements to be made withthe…
Microscopy
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