ADVEETISEMENTS. 



^ ill 3 B il I 33 cl I? lfC| 1^ Is i^ I; 



|H$tr«i!ients. 



COMPOUND AGHROMATiO MICROSCOPES. 



OF THREE CLASSES. 



FIEST CLASS. 



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

 are carried to the greatest possible perfection. 



Price, from £30 to £84. 



" The arrangement of the Illuminating Apparatus in Sjhtii & 

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

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

 point of general excellence of workmanship, this instrument cannot 

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



SECOND CLASS. 



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

 wit'i a leas expensive Stand and Apparatus for lUuminfttion. 



Price, from £16 to £40. 



These Instruments are improvements upon that mentioned ly Dr. 

 Carpenter on Microscope, First Editimi, page 87. 



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

 struction, which shall yet be capable of answering every essential 

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

 Beck appears to the author to be (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." 



THIRB CLASS. 



EDUCATIONAL. 



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

 to the requirements of most observers ; and the cost is considerably 

 leas than in the two other classes. 



Price, £10 or £15. 



An Illustrated Descriptive Pamphlet of the Educational Micro- 

 scope will be forwarded on receipt of six postage stamps. It in- 

 cjiides testimonials from the following eminent Microscopists : — 

 Wm.B. Carpenter, M.D.,F.R.S. John Lindley, Ph.D., F.R.S., 

 John Goodsir, F.R.S. F.L.S. 



John Edward Gray. George Kaincv, Esq^ 



William Gull, M.D. B. W. llichar'dson, F.E.C.S.I. 



George Jackson, M.R.C.S.E. William Smith, F. L. S. 



Edwin Lankestor, M.D., F.R.S. 



MICROSCOPIC OBJECTS, 



A Large Assortment of Objects of Scientific and General 

 Interest kppt constantly in stock. 



Price, from Is, 6d. 



A careful selection of Six Dozen ObjCCts in a neat 

 Mahogany Case. 



Price £4, 



This series comprises Illustrations of the following subjects : — 



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

 Scales, Skin, etc. 



The various parts of Injects, viz. : —Head, Eye, Tongue, Elytron, 

 Wing, Foot, Sting, Tracliaaa, Spiracles, etc. 



Of A^egetables : — Spores, Starch, Sectionsof Wood, Diatomacea-, 

 recent and fossil. 



Also Specimens of Sponge and Gorgonia Spicules, Algte, Zoo- 

 phytes, etc., etc. 



ACHROMATIC STEREOSCOPES, 



" Messrs. Smith & Beck have not only carried out, they have 

 gone beyond our sugtrestions. The result is a perfection beyond 

 which it is hardly posailjle to carry the Stereoscope.'' — Atltencevm, 

 August 28, 1858, page 269. 



AcHiiOMATic Table Steeeoscopi:, in Walnut wood £3 10 

 Ditto, ditto, ditto, in Mahogany . -33 



Handsome Pedestal Stands for the above, forming 



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 , . 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 adjustment of the 

 Lenses to difl'erent exes, and the mode ot inserting the slides, and 

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

 other forms of the instrument." — Sir David Brewster. 



IlLTJSTBATED DESCElPIIOJfS FOEWAEDED O.V ApPLigATIOIf . 



Stereoscopic Photographs of the Moon, on 



Glass, from Negatives taken by \N'arren DcUiruo, 



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



Glass Transparencies, including Views in Switzerland, 

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

 the lihiue, and various Continental Towns, each .076 



A very choice assortment of Views on Paper, per dozen 110 



GORHAM'S KALEIDOSCOPIC COLGUR-TQP. 



[See " Microscopical Journal," No. XXVI.) 



Price . . . • . -£110 



Extra Set of Rotating Dines, per dozen . -050 



This Instrument shows the various beautiful effects of the Com- 

 bination of Colours, eto. 



6, COLEMAN STREET, LONDON, E.G. 



Catalogues, etc., sent free on Application. Forcijn Orders to hs 

 accompanied icith a liemittance . 



