SCIENCE-GOSSIP. 



IVIASOM^'S 



MIGROSCOPICAL^PECIMENS. 



SERIES OF BOTANICAL SECTIONS. INSECT DISSEC- 

 TIONS OP MISCELLANEOUS, Is. Id. List for Stamp. 

 Many new Preparations in hand for coming Season. 

 Practical Hints on Mounting. (Copyright Pamphlet) 6d. 



R. G. MASON, 69 Park Rd., CL/VPHAM, S.W. 



LIVING SPECIMENS FOR 

 THE MICROSCOPE. 



Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actino- 

 sphaerium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, 

 Melicerta, and many other Specimens of Pond Life. Price is. per 

 Tube. Post Free. Helix pomatia, Astacus, Amphioxus, Rana, 

 Anodon, &c., for Dissection purposes. 



maoiMiAs BOiLirroisr, 



25 BALSALL HEATH ROAD, BIRMINGHAM. 

 TO 



ENTOMOLOQICAL DEALERS. 



A few purely Entomological Advertise- 

 ments will be inserted in Volume I. 



of Dr. Lang's " Butterflies of the 

 Palaearctic Region," to be published 



shortly. Rates for space may be had 



on application to the MANAGER of 



"Science-Gossip.' 



' PATENT - - 

 NEW MODEL 



ROSS 



PRISM BINOCULAR CLASSES. 



" The Power and Field of a Telescope in the compass of an 

 Opera Glass." 



Combining — 



PERFECT MECHANICAL CONSTRUCTION, 



EXTREME PORTABILITY and RIGIDITY, 



HIGH POWER and SPLENDID DEFINITION. 



Focussing: by Adjustment of 

 Eyepieces. 



Magnification. Price. 



8 diameters ... £8 

 ID ., 9 



12 ., . 10 



With spiral focussing arrange- 

 ment and one adjustable eye- 

 piece, 1 Os. each extra. 



Send for COMPLETE 



CATALOGUE of 

 MICROSCOPES, 



TELESCOPES, 

 PHOTOGRAPHIC LENSES, 

 CAMERAS and APPARATUS 

 OF ALL DESCRIPTIONS. 



Gold Medals and Highest Awards at all Great Exhi- 

 bitions. Awarded The Grand Prix, Paris, 1900. 



LONDON MADE. 



ROSS, Ltd., 



MANUFACTURING 

 OPTICIANS, 



111 NEW BOND STREET, LONDON, W„ and 



31 COCKSPUR STREET, CHARING CROSS, S.W. 



Paris : 35 BOULEVARD DU TEMPLE. 



AND OF ALL LEADING DEALERS. 



WATKINS & DONCASTER, 



NATURALISTS and MANUFACTURERS OF CABINETS and APPARATUS for 

 ENTOMOLOGY, BIRDS' EGOS and SKINS, and all branches of Natural History. 



N.B. — For Excellence and Superiority/ of Cabinets and Apparatus, references are permitted to distinguished 



Patrons, Museums, Colleges, &'c. 



Our New Catalogue (96 pages) may be had post free on application. 



Ta.\idermist's Companion, i.e. a pocket leather case containing 

 most useful instruments for skinning, los. 6d. 



Scalpels, IS. 3d. ; Label Lists of Birds' Eggs, 2d., 3d., 6d. 



Scissors, per pair, 2s. Setting Needles, 3d. and 6d. per box. 



Coleopterist's Collecting Bottle, with tube, is. 6d., is. 8d. 



Botanical Cases, japanned double tin, is. 6d., 2s. gd., 3s. 6d., 4s. 6d., 



Botanical Paper, is. id., is. 4d., is. gd., & 2S. 2d. per quire. [7s. 6d. 



Insect Cases, imitation mahogany, 2s. 6d. to iis. 



Cement for replacing antennae, 4d. per bottle. 



Forceps for removing insects, is. 6d., 2s., 2s. 6d. per pair. 



Cabinet Cork, 7 by 3A, best quality, is. 4d. per dozen sheets. 



Pupa Diggers, in leather sheath, is. gd. Insect Lens, is. to 8s. 



Glass Topped and Glass Bottomed Boxes, from is. per dozen. 



Label Lists of British Butterflies, 2d. 



Ditto Land and Fresh- Water Shells, 2d. 



Egg Drills, 2d., 3d., gd. ; Metal Blow Pipe, 4d. and 6d. 



Our new Label List of British Macro-Lepidoptera, with Latin and 

 English Names, is. 6d. Our new Catalogue of British Lepido- 

 ptera, every species numbered, is. ; or on one side for Labels, zs. 



Plain Ring Nets, Wire or Cane, including stick, is. 3d., 2s., 2s. 6d. 



Folding Nets, 3s. 6d. and is. 



Umbrella Nets (self-acting), 7s. 



Pocket Boxes, 6d. ; corked both sides, gd., is. and is. 6d. 



2inc Relaxing Boxes, gd., is., is. 6d. and 2s. 



Nested Chip Boxes, 4 dozen, yd., is. 6d. gross. 



Entomological Pins, mixed, is., is. 6d. per 02. 



Sugaring Lanterns, 2s. 6d. to 8s. 



Sugaring Tins, with brush, is. 6d., 2S. 



Sugaring Mixture, ready for use, is. gd. per tin. 



Mite Destroyer (not dangerous to use), is. 6di per lb. 



Store Bo.xes, with Camphor Cells, 2s. 6d., 4s., 5s. and 6s. 



Ditto, Book Pattern, 8s. 6d., gs. 6d. and los. 6d. 

 Setting Boards, flat or oval, i in., 6d. ; \\ in., 8d. ; i| in., gd. ; 2 in., 



lod. ; i\ in., is. ; 3 in., is. 2d. ; 34 in., is. 4d..; 4 in., is. 6d. ; 



44 in., is. 8d. ; 5 in., is. lod. Complete set of 14 boards, los. 6d. 

 Setting Houses, gs. 6d. and iis. 6d. ; corked back, 14s. 

 Zinc Larva Boxes, gd., is. Brass Chloroform Bottle, 2S. 6d. 

 Breeding Cages, 2S. 6d., 4s., 55. and 7s. 6d. 



All articles enumerated are kept in stock, and can lie sent immediately on receipt of order. 



The " DIXON " LAMP NET (invaluable for taking Moths off Street Lamps without climbing the lamp-posts), 



recently much improved, 3s. 6d. 



CABllMETS. Special Show Room. 



The following are the prices of a few of the smaller sizes ; for measurements and larger sizes see catalogue. 



Incprt FiTtrc; Minerals and Dried , !„,„.,. -c . Minerals and Dried 



Insect. iLggs. p,^^j^_ p^^^.,^_ ^^ Insect. Eggs. p,^„j^_ p^^^;,^^ ^^ 



4 Drawers 13s. 6d 12s. od los. 6d. S Drawers 33s 30s 25s. 



6 Drawers 17s. 6d. 



i6s. 6d. 



los. 6d. 

 iSs. od. 



10 Drawers 45s. 



S6s. 



45S- 



A LARGE STOCK OF INSECTS^ BIROS' EGGS ANO SKINS. 



Birds, Mammals, &c., Preserved and Mounted by First-class Workmen true to Nature. 

 Mr Ml Books and Publications oa Natural History supplied. 



36 STRAND, W.C. (Five Doors from Charing Cross). 



