SCIENCE-GOSSIP. 



Just Published. Price 5J. Post Free. 



APPLIED GEOLOGY. 



PART L 



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



emy Svo, bound in cloth. Profusely illustrated. 



THE QUARRY PUBLISHING CO., LTD. 



5, Arundel Street, Strand, London, W.C. 



MINERALS, ORES, 

 ROCKS, FOSSILS, &G. 



New Collection to Illustrate 



"GEOLOGY for BEGINNERS," 



Professor W. W. WATTS, M. A., F.G.S. , 



Assistant Professor in Geology, Mason College, Birmingham, 



£ s. d. 



SET CO. 115.— 100 Specimens, Minerals, Bocks and 



Fossils, in Cabinet, with three Trays 2 2 



SET O.C. 117.— 130 Do. do. do. in Cabinet with four 



Trays 3 10 



SET O.C. 1 1 9. —160 Do. do. do. goodhandsize speci- 

 mens, in Cabinet with five Trays 5 5 



SET CO. 121.— 24 Microscope blides for do. do., in a box 1 17 6 



BET CO. 113 -SCHOOL OR COLLEGE COLLECTION. 

 Special collection of 670 Minerals, Bocks and Fossils, 

 suitable for a School or College Museum ; size of 

 specimens about 2 in. by li in., enclosed in a 12- 

 drawer stained deal cabinet, with pilasters to lock. 

 Dimensions of cabinets, 39 in. high, 20 in. wide. ... 21 



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

 and write for full Catalogue post free. 



COX & 00., 99 & 101, NEW OXrOED ST., LONDON 



(And through all Educational Houses.) 



W. WATSON & SONS' 



" FRAM ' MICROSCOPE 



A Highest Class Microscope at a very moderate cost. 



Coarse Adjustment. — Watson's dia- 

 gonal rack and pinion. 



Fine Adjustment. — "Watson's lever 

 form. 



Tripod Foot, with 7-in. spread. 



Stage. — Nelson's horseshoe pattern, 

 3| by 3| in. 



Body Length. — 152 mm. With draw- 

 tube extended, 250 mm. Objective 

 thread at lower eud of draw-tube. 



Fittings of universal size throughout. 



Under Fitting arranged to turn out 

 from optic axis when desired. 



PRICES. 



Set Z,"FRAM'' Micro- 

 scope, with one eye- 

 piece.Watson's Para 

 chromatic 1/6 in. and 

 choice of 1 in. 1/2 in. 

 or 2/3 in., complete 

 in Mahogany case, 

 £6 I5S. 



Set XI. Complete as 

 per Set X., with the 

 addition of Abbe Dlu- 

 minator having Iris 

 Diaphragm, and ex- 



* tra Eyepiece, £& 5S 



Full particulars of the above, also complete Catalogue- of Micro- 

 scopes, forwarded post free on application to 



W, WATSON & SONS, 



313, HIGH HOLRORN, LONDON, W.C. 



R™«^ Bq _ S 16, Forrest Road, Edinburgh. 



mancMS t 78, Swanston St., Melbourne, Australia. 



TO ENTOMOLOGISTS. 



W. F. H. ROSENBERG, Traveller-Naturalist, 



48a, Charing Cross Road, London, W.C. 

 EVERY DESCRIPTION OF NATURAL HISTORY APPARATUS. 



THE YOUNG COLLECTOR'S OUTFIT, 



Containing — 



Butterfly Net, Pocket Box, Belaxing Box, Larva Box, 

 Three Setting Boards various sizes, Store Box, 



Mixed Pins, Killing Bottle, Setting Needle, 

 Chip Boxes, Egg Drill. — 10s. 6d. complete. 



ILLU STEATED CATALOGUE POST EEEE. 



BECK'S 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 lis. 6d. £3 12s. 6d. £4- 7s. 6d. £5 12s. 6d. 



New One-twelfth Inch Oil Immersion Object Glass, N-A 1*0 £4-. 



Ful '^ap7^i^ s R. & J. BECK, Ltd., 68, Cornhill, London, E.C. 



