The microscope made easy: or, I. The nature, uses and magnifying powers of the best kinds of microscopes ... II. An account of what surprizing discoveries have been already made by the microscope .. (1754)
Baker, Henry, 1698-1774 · London, Printed for R. and J. Dodsley, and sold by M. Cooper · leaf 64
ed about, raifed, or de-prefled, brought nearer the Glafs, or putfarther from it, till you hit the true focalDiftance, and the Light be feen reflededfrom the Speculum ftrongly upon the Ob-jed:: by which means, it will be fhewn ina manner furprizingly diftind and clear.And for this purpofe, the… … for Opahe OhjcBs, 3! When fuch come under Examination, it Willnot always be proper to throw on them theLight retie(fl:ed from the Speculum : for theLight tranfmitted through them meeting thereflected Light, may, together^ produce toogi*eat a Glare. A little Pra6]:ice will teachhow to regulate both…
Microscopy
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