ADVEETISEMENTS. 



aitufettiirtrs d #|itinil anir Pittljenmticri |n.$tntiiitirti 



COMPOUND ACHROMATIC MICROSCOPES. 



OF THREE CLASSES. 



FIRST CLASS. 



In which the Magnifying Power, the Stand, and the Illumination, 

 are earned to the greatest possible perfection. 



Price, from £30 to £84. 



" The arrangement of the Illuminating Apparatus in Smith & 



Beck's Microscope seems to the author to present some decided 



• adyantafjes over that adopted by either of the other makers, and in 



point of general excellence of workmanship, this instrument cannot 



be surpassed." — Carpenter, on Microscope, First Edition, page 103, 



SECOND CLASS. 



In which the oame Magnifying Power as the former is combined, 

 with a less expensive Stand and Apparatus for Illumination. 



Price, from £15 to £40. 



These InsirumenU are improvements upon thai mentioned hy Dr. 

 Carpevta- on Microscope, First Edition, page 87. 



"Of the patterns yet devised for a Mieroscope of simple con- 

 struction, which shall yet he capable of answering every essential 

 purpose, whether of display or of investigation, that of Smith & 

 Beck appears to the author to he (to say the least) among the best, 

 and he recommends it with the more confidence, since he has for 

 many years employed one of ;these Microscopes as his own working 

 instrument." 



THIRD CLASS. 



EDUCATIONAL. 



The capabilities of this Instrument are limited, but they are equal 

 to the requirements of most observers j and the cost is oonsideralily 

 less than in the two other classes. 



Price, £10 or £15. 



An Illustrated Descriptive Pamphlet of the F,dueational Miero- 

 pcope will be forwaidtd on receipt of six postage stamps. It in- 

 cludes testimonials from the following eminent Microscopists :- 

 "Wm. B. Carpenter, M.D.,r.I{.S. 

 John Goodsir, F.R.S. 

 John Edward Gray. 



VVilMam Gull, M.U. 

 George Jackson, M.R.C.S.E. 

 Edwin Lankester, M.D., F.E.S. 



John Lindlov, Ph.D., F.R.S., 

 F.L.S. 



George Hainev, Esq. 



B. W. Kieharclson, F.R.C.S.I. 



William Smith, F. L. S. 



MICROSCOPIC OBJECTS. 



A Large Assortment of Objects of Scientific and General 

 latorest kept constantly in stock. 



Price, from Is, 6d. 



A careful selection of Six Dozen Objects in a ne.it 

 Mahogany Case. 



Price £4, 



This series comprises Illustrations of the following subjects :— 



The Structure of Bone", Horn, Hoof, Tendon, Hair, Feathers, 

 Sciles, Skin, etc. 



The various parts of Insects, viz. ;— Head, Eye, Tongue, Elytron, 

 Wing, Foot, Sting, Trachsoa, Spiracles, etc. 



Of Vegetables : — Spores, Starch, Scctionsof Wood, Diatomacea", 

 recent and fossil. 



Also Specimens of Sponge and Gorgonia Spicules, Alg£e, Zoo- 

 phytes, etc., etc. 



ACHROMATIC STEREOSCOPES, 



" Messrs. Smith & Beck have not orily carried oqt, they have 

 gone beyond our suggestions. The result is a perfection beyond 

 which it is hardly possible to carry the Stereoscope." — Athencenm, 

 August 28, 1858, page 269. 



AcHEOMATic Table Stebeoscope, in Walnut wood £3 10 

 Ditto, ditto, ditto, in Mahogany . -33 



Handsome Pedestal Stands for the above, fonning 



also Cases for Views, from . . £2 5s. tO 4 15 



Patent Mirror Stereoscope, in Walnut wood . 2 



Ditto ditto Mahogany . • 1 15 



Superior leather Case for the above . -0 12 





 







o 





 6 



" Having used your Patent Achromatic Stereoscope, I consider it 

 the best Lenticular Stereoscope that I have seen, both in its optical 

 and mechanical arrangements. The illumination of the Binocular 

 Pictures, both by reflected and direct light, the iidjustment of the 

 Lenses to difi'erent eyes, and the mode of inserting the slides, and 

 fixing them in their proper place, give it a great supeiiority over 

 other forms of the instrument." — ^tV David Breuster. 



IlLUSTBATED DESCBIPTIONS rOBWAEDED ON APPLICATIOir. 



stereoscopic Photographs of the Moon, on 



Glass, from Negatives taken by Warren Delarue, 



F.E.S., Sec. R A.S., etc. . . • £0 10 6 



Glass Transparencies, including Views in Switzerland, 

 Egypt, the Pyrenees, Heidelberg, Spain, the Tyrol, 

 the Khine, and various Continental Towns, each .076 



A very choice assortment of Views on Paper, per doxen ISO 



GORHAM'S KALEIDOSCOPIC COLOUR-TOP. 



{See " Microsoopiciil Journal," Ko. XXJ'T.) 



Price . . • • -£110 



Extra Sot of Rotating Diiics, per dozen . -050 



This Instrument shows the various beautiful effects of the Com- 

 bination of Colours, etc. 



6, COLEMAN STREET, LONDON, E. 



Catalogues, etc., sent f)-cc on AppUcfition. Foreign (h-ders to he 

 accompanied with a ICemittance. 



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