The microscope and microscopical technology : a textbook for physicians and students / by Heinrich Frey ; translated from the German and edited by George R. Cutter, from the fourth and last German edition.

Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: The microscope and microscopical technology : a textbook for physicians and students / by Heinrich Frey ; translated from the German and edited by George R. Cutter, from the fourth and last German edition. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    Plain eye-piece 10 fr Holosteric eye-piece ]5 fr. Eye-pieoe with adjusting screw 25 fr. Micrometer eye-piece 25 fr. Binocular stereoscopic eye-pieoe ISO fr. Movable stage 40 fr. Simple oorapressoriimi 2Ufr. New compressorium 25 fr. Stage micrometer mounted in brass, the millimetre divided into 100, 500 and 1000 parts 20 fr. New movable micrometer (gives with great accuracy 0.0001 millimetre) .50 fr. Polarizing apparatus 50 fr. Improved patent polarizing apparatus, with a polarizing eye-piece, a prism with a large field of vision, and a graduated circle liO fr. Goniometer 00 fr. Universal goniometer 150 fr. Dujardin's illuminating apparatus (improved construction) 50 fr. Camera lucida of Oberhauser ; also serving for the conversion of the vertical into the hori- zontal microscope 50 fr. Camera lucida of Milne-Edwards and Doyere 35 fr. Briicke's loup (improved construction) , 20 fr. Stand for this loup 30 fr. Loups 5-15 fr. Lamp for microscopic examinations, with a large illuminating lens for obtaining parallel rays of light 35 fr. Object slides, first quality, per dozen 2 fr. Object slides, second quality, per dozen 1 fr. Pine covering glasses, per dozen, 1 fr.; per hundred G fr. B. Prices of the several JTIicroscopes. No. I.—Small microscope (d'hospice), with a lens system No. 7, and an eye-piece No. 3 ; mag- nifying power, 300; with a dozen slides and thin covers, brass forceps, scalpel and pre- paring needles 65 fr. No. II. Achromatic microscope (with a wider stage), furnished with the lens systems 4 and 7, eye-pieces 2 and 3, and an illuminating lens fur opaque bodies. Magnifying powtr from 50, 05, 220 to 300 diameters, microniecer-screw on the stage, rotary d.aphragin 115 fr. The same instrument, with the addition of lens system 8, and eye-piece 4, magnify ing jiower from 50-GOO 105 fr. No. II.A.—Achromatic 'microscope, with firm stage; micrometer screw on the stem; muTor freely movable for obUque illumination; optical apparatus as in II 120 fr. To obtain a magnifying power up to 000 170 fr. No. III.—Achromatic microscope, small drum stand, with a firm, lai'ge stage, rotary dia- phragm, and the same optical apparatus 140 fr. To obtain a magnifying power up to COO 190 fr. No. III. Aclu-omatic microscope; stand, in its upper part, similar to the previous one ; but having a horse-shoe foot; freely movable mirror for oblique illumination ; optical appara- tus the same 140 fr. To obtain a magnifying power up to 600 190 fr. No. III.A.—Achromatic microscope, similar to the previous one; the stem is, however, pro- vided with a joint for obtaining an oblique position; optical apparatus the same 155 fr. To obtain a magnifying power up to (iOO 205 fr. No. IV.—Achromatic micioscope lith rotary stage, and a black glass plate on the same ; cylin- drical diaphragms; lens systems 4 and 7, new construction, and eye-pieces 2 and 3 ; magnifying power, 70, 00, 220, 300 300 fr. To obtain a magnifying power of 050 3(10 fr. No. V.—Large achromatic microsco))e ; foot and stage the same, only larger and more firm ; optical apparatus the same as with No. IV 340 fr. To obtain a magnifying power of 050 400 fr. No. VI. Achromatic dissecting microscope, with long focal distance and inversion of the image; magnifying power (without changing the lenses or eye-pieces) from 10^100. Rotary stage with glass plate 250 fr. No. VII. New, large patent achromatic microscope, the mechanical and optical construction of which ditl'cr essentially from the older large ^Oberhiiuser's) stand. It consists of 5 lens, systems 2, 4, 5, 7, and the imuiers.on system 0, and 5 eyepieces (one of which has a micrometer); magnifying power from 25-1,300 (each succeeding enlargement twice as great as the previous one). Coarse movement by an adjusting screw, the fine one by a micrometer screw. Large illumuiating lens for opaque objects; all the necessary acces- sory apparatus • 750 fr. The same stand with a joint for inclining 800 fr.