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WATSON & SON'S NEW MICROSCQl^ES & APPARATUS. 



WATSONS New Parachromatic Oil Immersion Con- 

 Ji-nscr, i\;o N.A.. aplanatic Aperture. i"25 X.A., 

 unJoubteiily the best condenser- }et produced for 

 high-power work. Complete with Iris mount 



Optical part only .. • .. 



WEST'S Table' Stage, as' described in " .Ali'croscopy " 

 column, Sl'iknck-Gossip. June, 1899 .. 



WATSOX'S Van Henrek Microscope ..- 



WATSON'S Edinburi^h Student's Microscope . . 



WATSON'S •■ Frani " ]\Iicroscope ' . - "'.^ . . 

 For Field ^Vork: 



BOTANY,— \cr\ stron<< Digger with Icitlier cover .. 



Field ISooks." with thick bibulous pads, wooden 



lx>ards and straps . . . . . - . . ■ . . 



Vasculum, Japanned tin, with" shoulder straps 



z sizes, each 3s. and 



GEOLOGY.— Geological Hammers . . 2s. 6d. and 



(i 10 



5 



3 

 2 



3 

 3 



Micro: Objects: 



Anatomy of a Leaf (o pieces), arranged on one slide . . 

 Section ihrougli entire Bud of Lily, showing ovary, 



anthers, petals, pollen grains. &c. 

 Set of ^4 Botanical Slides (elementary tissues), specially 



arranged for the use of students, in case 

 Set ot 1^ Slides, illustrating structure of Typical Rocks 



Oitto ditto Ph\siography 



Genus Diatomacea: Slides. c-.)nsihting of several species 

 of one genus — 

 Navicula. 100 species. 7s. Bd. ; Aulacodiscus, 25 species 

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 Coscinodi'scus, itjo species. 7s. 6d.; Triceratium.50 .. 



£ s. d. 



2 (') 



2 



1 4 

 18 



■ 14 6 



12 

 7 

 -7 



METAMORPHOSES.— ActuaLspecimcns arranged and labelled 

 in niuseuni jars to illustr.'ite life histories. List of .subjects on 



application. 

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Watson's Illustrated Catalogue of Miscroscopes (No. 2), containin_ 



Watson's Catalogue (No. :^i. is a Classified List representing a stock of over 40,000 iirst-class specimens. Post free on application 



W. WATSON & SONS, (]£5taMi6bc& IS37), Ooticiaus to H.M. Government, 

 313, HIGH HOLBORN, LONDON, V/.C. 



New Branch Now Open: 16. FORREST ROAH, EDINBURGH. And at 7S. Swanstoit Street, Melhourne, Australia. 

 Awa7-iied JQ GoU an</oi/i,r Medals at the prmci/tal fnfcynajinnal J-lxluhitions of the World. 



MINERALS, ORES, ROCKS, 

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EXTENDED COLLECTION OF LARGER SPECINIENS, 



d. 



10 6 



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Set CC. 101— Cabinet. i7oin. by lo^in. by ain. ot 50 

 characteristic specimens of Minerals, 

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 loealities - . . . ■ . . 



Set CC. 103— Cabinet. i7;iin. by lo^in. by 4in. with 2 

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 and Sedimentary Rocks and British 

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 - Set CC. 105— Large Cabinet. i7^in. by lojin. by 6iin.. 

 with 4 lifting trays, containing 20a ilin. 

 specimens of Metallic Ores. Earthy 

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 Sandstones. Marls. Shales and Meta- 

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 Tufts. Basalt, Dolomite. Trachite. Obsi- 

 dian, Pumice. &.C., with a representative 

 . ; series of Fossils from the Tertiary, 

 . -. Cretaceous. Oolitic. Liassic, Carboni- 

 ferous, Devonian and Silurian Strata. 

 Each named and localized . . 



Set CC. 107— 3C0 VaUiablc specimens in cabinet. i6in. 

 bv r^in., with 6 drawers . . 



Set CC. 109—500. "Rarer and larger specimens in 

 maiiogany cabinet, ,^oin. by 2oin. with 9 

 drawers. . . . .... 



t^- S, . luiitoi'ial yoticcjcnniaiy No. e/" " SciESCK-GossiP," 

 tnid ivritc forjull Catnlog'ue J>osi free. 



COX &C0„ 99 &101, NEW OXFORD ST„ LONDON 



Sci-i>iul ]'nluiiic XifiV Riaily. 



APPLIED GEOLOGY. 



C(im]ilete Work 7s. 61I. Prist Free. 



By J. V. ELSDEN, B.Sc. (London), F.G.S. 



Demv Svii. Imund in clolh. I'mfuselv illustrated. 



lU 



10 10 



(. //;(/ !lir.V(i,'h all r.dmnllnual Ha! 



THE QUARRY PUBLISHING CO., LTD. 



0, A'ictiiiia Street. Wesmiiiisier, LuiKinn. .S.W. 



W. F. H. ROSENBERG, 



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 48a, CHARING CROSS ROAD, LONDON, W.C. 



Every description of Natural History Appax-atus. 



ZU young Collector's Outfit, 



■ COXTArMXli 



Butterfly Net, Pocket Bo.\. Relaxing Box, LarVa Box. Three 



Setting Boards (various sizes), Store Box, Mij^ed Pins, Killing 



Bottle. Setting Needle, Clip Boxes. Blow-pipe and Egg Drill. 



Price, lOS. 6d. complete. JHuslmlc^ Cat»io}ruc if .Itt'^ralns pc.^t/ra- 



BECK'S 



NEW "BRITISH 

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MICROSCOPES. 



No S4 -Stand, Iris diaphragm No. 55.-Stand. Iris diaphraum Xo. sO.-Stand, !n6 daplirasni X... 

 and mah,k'anv case, ' ., and n,ah,;.sany casu, , and-mahogany case, 



'6d. . ■ ' £3 I2S. 6d.> > i-4 7s- o^'- 



■ New ONE-T\VEi.T"nr.lNai On. Isi.mkk.sios Object Gl.v.ss, .N'-A.1-ii £4. 



i.2 IIS. 



;7.— Stand. Iris diapliragm 

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i:5 I2S. '6d. 



/( ,.x and pi 

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rr"" R. & J- BECK, Ltd., 68, Cornhill, London, E.G. 



