SCIENCE-GOSSIP. 



Awarded 39 Gold 



and other Medals 



at International 



Exhibitions. 



"HIT. WATSON & SONS, 



SOLE MANUFACTURERS OF THE NOTED 



Finest quality 



Workmanship. 



Perfection in i 



every detail. 



VAN HUERCK, EDINBURGH STUDENT'S AND "FRAM" MICROSCOPES. 



MiARnficnPlC OBJECTS. I THE "FRAM" MICROSCOPE. 



MICROSCOPIC OBJECTS, 



tS" Stock-taking Surplus Sale, at 6d. and 9d. each. 

 The«e objects comprise a portion of Watson & Sons' regular Stock. As 

 material has from time to time been procured, large numbers of Mides 

 have been pr-pared and put into Stock. A considerable accumulation has 

 in con>equence taken place, and "Watson & Sons have decided to offer them 

 at the exceedingly low prices of 6d- and 9d- each, to effect a reduction in 



They comprise Diatomaeese, Botanical, Geological, Anatomical, Ento- 

 mological, and numerous sppcimens of eeneral interest. 



ASSORTMENTS FOE SELECTION.-An assortment of these Slides 

 will be sent for selection on receipt of reference or cash deposit. ... 



r)ppia' Note —These objects are not damaged or of poor quality, but ot 

 our regular Standard Stock, and ordinarily sell at Is., Is. <id., and 2s. each. 



A« the number is limited, this offer will only be open for a short period. 

 Early appln ation is therefore invited. 

 Watson 4 Son's Catalogue (Xo. 3) of Microscopic Objects pout free on application. 



"HIT. WATSON & SONS, 3X3, Higli Holborn, London, THT.C 



Branches : 16, Forest Road, Edinburgh and 78, Swanston Street, Melbourne, Australia. 



. M , i.entbvi. Potzler. & Po„ 85, Mortimer Street. Glasgow: W. W. Scott. ISO Sauchiehall Street. Sheffield: JAsrER 

 Redtern, 53, Surrey Street. Ma nchester Agency : J. AVooleey Sons & Co., Limited, Victoria Bridge. ^^ 



A Highest (Class Microscope at a very moderate cost- 

 Coarse Adjustment.— "Watson's diagonal l'ack and pinion. 

 Fine Adjustment.— Watson's lever form. 

 Tripod Foot, with 7-inch spread. 



Stage —Nelson's horseshoe pattern. 3 3-8th in. by 3 5-8th in. 

 Body Length.— 152 mm. With draw tube extended, 250 mm. Objective 



thread at lower end of draw -tube. 

 Fittings of Universal size throughout. 

 Under Fitting arranged to turn out from optic axis when desired. 



PRICES: Set X. " Pram" Microscope, with one Eyepiece, Watson's 

 Parachromatic l-6th in. and choice of 1 in., Jin., or 2-3rd in., complete 

 in Mahogany Case, £6 15s. , ., , ,,.,. „ . ,.,_ „, 



Set XT. Complete as per Set X., with the addition of Abbe Illuminator 



having Iris Diaphragm, and extra Eyepiece, £8 5s. 



Full particulars of the above; also complete catalogue of Microscopes, for 

 ded post free on application to 



Depots. London (AVest-ena,, Isenthal, Potzler & Co. 



MINERALS, ORES, 

 ROCKS, FOSSILS, &c 



"What they are" and " Where they are found." 



In this " Elementary Geological Series " are five sets, each set 



containing 20 named and located specimens, with descriptive 

 notes. In cases 11 x 7 x ij, post free, 3s. 



SET No. 26.—" Metallic Minerals," contains 20 named Specimens 

 of Metallic Minerals and Ores, in which the principal groups 

 are represented, including Ores of copper, iron, lead, zinc, 

 tin, &c ■ 2s. 6d. 



SET No. 27.'—" Earthy Minerals," contains 20 named Specimens 

 of Earthy Minerals, including Fluor, Apatite, Felspar, Talc, 

 Hornblende, &c. ... ... •■• ••■ 2s - 6d - 



SET No. 28.— "Igneous Rocks," contains 20 named Specimens of 

 Igneous, Volcanic, and Metamorphic Rocks, including Obsi- 

 dian, Trachyte. Granite, Lava, Basalt, &c ... 2s. 6d. 



SET No. 29.—" Sedimentary Rocks" contains 2onamed Specimens 

 of Sedimentary Rocks, including Crag, Gault, Oolite, Lias, 

 Limestone, Sandstone, &c. ... ... ... 2s. 6d. 



SET No. 30.—" Fossils," contains 20 named Specimens of British 

 and other Fossils, including examples from Crag, Eocene, 

 Gault, Oolite, Carboniferous, &c. ... . ... 2s. 6d. 



The above 100 Specimens of Minerals, post free, 12s. 6d. 



SET No. 58.— " Precious Stones, " contains 20 well-known examples 

 of stones in use for jewellery and ornamentation, as found in 

 nature, from various parts of the world, with their specific 

 localities, &c. __?d-> or post free, 3s. 6d. 



ffy^a See Editorial Notice, January No. of "Science-Gossip," 

 \1K? and write for full Catalogue post free. 



COX & CO., 99 & 101, NEW OXFORD ST., LONDON. 



STEVENS' AUCTION ROOMS, 



SCIENTIFIC INSTRUMENTS 



INCLUDING ALL KINDS OF 



Optical and Photographic Apparatus, Electricals, 



Mathematical, Surgical and 



Musical Instruments, and Miscellaneous Property 



of every description, 



EVERY FRIDAY. 



NATURAL HISTORY SPECIMENS 



ONCE A ND TWICE A MONTH. 



MR. J. C. STEVENS 



Begs to call attention to his Sales of the above at 

 his Great Rooms, 38, King Street, Covent Garden, 

 at 12.30 every Friday. 

 Goods received at any time, and included in these Sales. 



OASTS FROM ANCIENT SEALS. 



Several thousand for sale from 3/- per doz. (carriage extra), 



according to size and intricacy. 



Sample: Seal attached to Order for Massacre of Saint 



Bartholomew. 6d. free. 



Very complete series of English Episcopals, Scottish Regal, etc. 

 Send details of wants and stamp to — 



W. H. TUNLEY, Rowlands Castle. 



BECKS NEW "BRITISH STUDENTS" MICROSCOPES 



-Stand, Iris diaphragm No. 55.— Stand, Iris diaphragm 

 nd mahogany case, and mahogany case, 



£2 11s. 6d. £3 12s. 6d. 



' New One-twelfth Inch Oil Immersion Object Glass, N-A i'o.£4. 



No. 56.— Stand, Iris diaphragm No. 57.— Stand, Iris diaphragm 



and mahogany case, and mahogany case, 



£4 7s. 6d. £5 12s. 6d. 



Full Pi '■> <" ' ' : ■'•' 



p« application t 



R. & J. BECK, Ltd,, 68, Cornhill, London, E.C. 



