Number. 44 Professor Quekett's portable Dissecting Microscope, simple and compound, with improved brass legs. The Simple Microscope consists of polished mahogany stage, 5 inches square, (with glass plate let in so as not to corrode with the use of reagents,) on brass folding legs, rack movement, concave mirror, condenser with moveable arm, and three object glasses; viz.,-1 inch, inch, and Coddington lens inch; the powers, mirror, condenser, &c., all packing in the under surface of the stage for portability in travelling. Price £2. 46 The above fitted with compound body, two achromatic object glasses; viz., -1 inch, and inch, in neat morocco case, (as drawing,) with dissecting scissors, knife, needle, tweezers, half a dozen glass slips, and box of thin glass covers. Complete, Price £4. 58. For neatness of appearance, and real utility, this Microscope is the most effective instrument that has been introduced, being very steady and convenient when set up for use, and extremely portable for travelling. 43 Large Compound Microscope, on bronzed tripod stand, with double sup L. s. d. port; coarse rack movement, and fine screw adjustment; moveable stage, worked by diagonal screws with brass milled heads, having one-inch motion in all directions; plane and concave mirrors 2} inches diameter; with two Huyghenian eye-pieces, A and B. 7 5 0 N.B. The screw for object glasses, and the eye-pieces of this instrument, are made to Ross's sizes. 49 Ditto, ditto, with brass tripod stand, (more highly finished,) having two eye-pieces, A and B Best Upright Mahogany Cabinet, for No. 43 or 49, with drawer, fittings, &c., and brass handles 9 10 0 17 0 Achromatic Object Glasses, for Microscopes. Superior French or German Achromatic Object Glasses, with adapter and brass box engraved, for No. 43 Microscope. Superior English-made Achromatic Object Glasses. 70 Superior Achromatic Combination, (in brass box engraved,) forming 72 Superior 2 inch Achromatic Combination (not separable) 2 inch.. 13° to 15° A Magnifying powers with various Eye-glasses. B Diameters. Superficial. Diameters. Superficial. Diameters. Superficial. 110 inch.. 125° to 130° 420 or 176,400 670 C 40 or 1,600 100 or 10,000 N.B. The above Object Glasses, for defining and penetrating power, are of firstrate quality. Those of large angular aperture, marked *, being the finest that can be made. Apparatus for Microscopes. Condenser, on bronzed foot, with brass sliding tubes, as sent with the L. s. d. 050 0 8 6 0 16 0 Polariscope, for No. 25 Microscope Large ditto, for 43 or 49 Microscope Achromatic Condenser, for 43 or 49 Microscope Camera Lucida Brass Forceps Steel ditto Dissecting Scissors, with fine points Dissecting Needles, bone handles Dissecting Knife, ivory handle Animalcule Cage Set of Dissecting Instruments, in neat pocket-book, containing scissors, knife, two needles in handles, forceps, and tortoiseshell hand magnifier, with two powers, complete each 0 10 6 0 5 0 per set per gross Improved Porcelain Slides, with cells, for opaque objects, or in 0 4 0 080 Hand Polariscope, with six large prepared crystals; to illustrate the polarization of light. In neat leather case 0900600 each 2 15 0 Hand Polariscope and Magnifier: in neat leather case, with 12 crystalline preparations (quite new) Small ditto, in tortoiseshell mounting, two lenses Ditto, each 0 4 0 0 7 0 No. 128 0 3 0 3 4 silver mounting 0 6 0 476∞ ∞ ∞ ∞ + 0304 OOO 0 Cases and Cabinets for Microscopic Objects. Neat Leather Case, velvet lined, for holding one dozen objects flat, each Ditto, £. s. d. 020 2 6 030 French-polished Mahogany Cabinet, with drawers, from £2. 10s. each. } by 2} 018 per dozen 030 94 Ditto, the set 090 per dozen 080 97 Set of 12 starches, (from Dr. Pereira's collection,) for testing adulteration in articles of diet, in neat leather case 98 Set of 12 Polariscope objects, (crystals, &c.,) in neat leather case 99 Anatomical injected preparations, human and comparative, muscular fibre, &c. 090 per dozen 0 16 0 Educational Series. The following interesting series of Microscopic preparations has just been completed:-every object is numbered and named, and a descriptive essay accompanies each set. "Class A " is an introductory set, consisting of 24 preparations of various kinds, neatly fitted in a leather case, accompanied by a descriptive Essay, entitled "Microscopic Revelations." . 0 10 0 015 0 "Class B" consists of 24 insect preparations, in a leather case, accompanied by a popular description of the structure of insects; forming a practical introduction to the study of Entomology "Class C" contains an interesting and valuable series of 35 vegetable preparations, in a leather case; illustrating the Microscopic structure of plants: each object being numbered and described, so as to form a practical introduction to the study of Botany . 100 P.S.-A popular work, entitled "The Plant and the Microscope," will shortly be published, describing fully the preparations in this set. Price 2s. 6d. Other series will probably be issued, comprising fossil infusoria and sponges, anatomical preparations, illustrations of adulterations in articles of food and commerce, &c., &c. N.B. The above Microscopic preparations have just received the approval and recommendation of the Council of the Society of Arts. |