. The microscope and its revelations. he microscope, andwas an excellent maker. He ap-plied rack -and-pinion focussing ad-justments, to the compound micro-scope he added inclining move-ments to the pillar carrying thestage and mirror, and he furnishedthe stage with rectangular movements. >vas to this maker that the late Professor Quekett wasindebted for an earlj microscope, of which he evidently to the lastthought highly, and which was subsequently purchased by the RoyalMicroscopical Society. A drau ing of t his instrument is given in should be described in (^ueketfs own words. He s
. The microscope and its revelations. he microscope, andwas an excellent maker. He ap-plied rack -and-pinion focussing ad-justments, to the compound micro-scope he added inclining move-ments to the pillar carrying thestage and mirror, and he furnishedthe stage with rectangular movements. >vas to this maker that the late Professor Quekett wasindebted for an earlj microscope, of which he evidently to the lastthought highly, and which was subsequently purchased by the RoyalMicroscopical Society. A drau ing of t his instrument is given in should be described in (^ueketfs own words. He says :stands aboul two feet in height, and is supported on a tripodthe central part or .stem. \\. is of triangular figure, having, upon which the stage, <), and frame, D, support-mirror. !•;. are capable of being moved up or down. The, is three inches in diameter; it is composed ofner of which contains the eye-piece, and can bel(.v rack and pinion, so as t(. increase or diminishpower. At the base of the triangular bar is a cradle. Fin. 109.—Wilsons simple microscopeon scroll *t,i IK fas made byAdams, 1746). QUEKETTS MICROSCOPE joint, G, by which the instrument can be inclined by turning thescrew-head, H [connected with an endless screw acting upon a worm-wheel]. The arm, I, supporting the compound body, is suppliedwith a rack and pinion, K, by which it can be moved backwards andforwards, and a joint is placed below it, upon which the body can beturned into a horizontal position ; another bar carrying ;i stage andmirror can be attached by the screw. L N. so ;is to convert it hit > nhorizontal stage. O, is providedwith all the usual appa-ratus for clamping ob-jects, and a condensercan be applied to itsunder surface ; the stageitself mav be removed, •/ the arm, P, supporting it. turned round on thepivot C, and anotherstage of exquisite work-manship placed in itsstead, the under surfaceof which is shown at Q. This stage is strictlya micrometer one, ha
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
