SCIENCE-GOSSIP. 



Awarded 39 Gold 



and otlier Medals 



at International 



Exhibitions. 



SOLE MANUFACTURERS OF THE NOTED 



Finest quality 



Workmanship. 



Perfection in 



every detail. 



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



MICROSCOPIC OBJECTS, 



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



These 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 consequence taken place, and Watson & Sons have decided to offerthem 

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

 numbers. 



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

 mological. and numerous specimens of general interest. 



ASSORTMENTS FOE SELECTION— An assortment of these Slides 

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



Specia 1 Note.— These objects are not damased or of poor quality, but of 

 our regular Standard Stock, and ordinarily sell at Is., Is. 6d., and 2s. each. 



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

 Early application is therefore invited. 

 Watson A, Son's Catalogue (A'o.3) of Microscopic Objects post free on application . 



THE "FRAM" MICROSCOPE. 



A Highest Class Microscope at a very moderate cost- 

 coarse Adjustment. — "Watson's diagonal rack and pinion. 

 Fine Adjustment. — Watson's lever form. 

 Tripod Foot, with 7-inch spread. 



Stage. — Nelson's horse-shoe pattern, 3 3-8th in. by 3 C-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 but from optic axis when desired. 



PRICES.- Set X. "Eram" Microscope, with one Eyepiece, Watson's 

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

 in Mahogany Ca«e, £6 15s. 

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



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



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

 warded post free on application to 



W. WATSON & SONS, 313, High Holborn, London, 1HT.C. 



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



Depots. London (West-ena,, Isenthal, Potzler & Co., 85, Mortimer Street. Glasgow: W.W.Scott, 180, Sauchiehall Street. Sheffield: Jasper 

 Redfehn, 55, Surrey Street. Manchester Agency : .7. Woolley Sons & Co., Limited, Victoria Bridge. 



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 20 named Specimens 

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

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



SET Ho. 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. 



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



OASTS FE0M 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. 



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 AND 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. 



Now ready, price One Penny, and Postage One Halfpenny 

 for every four copies. 



LABEL LIST OF THE BRITISH 5-BANDED 

 LAND-SHELLS AND THEIR VARIETIES. 



To which is added the Band-formula? of Helix nemoralis and 



H. hortensis. Will also serve as an exchange list. 

 Apply Editorial Department, Science-Gossip, i, Northumber- 

 land Avenue, London, W.C. 



BECKS NEW "BRITISH STUDENTS' MICROSCOPES 



No. 54.— Stand, Iris diaphragm No. 55.— Stand, Iris diaphragm No. 56.— Stand, Iris diaphragm .No. 57.— Stand, Iris diaphragm 

 and mahogany case, and mahogany case, and mahogany case, and mahogany case, 



£2 11s. 6d. £3 12s. 6d. £4 7s. 6d. £5 12s. 60. 



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



F :J!fZ%& ^o ulars R- & J. BECK, Ltd,, 68, Cornhill, London, EC. 



