May 4, 1905] 



NA T'URE 



WATKINS & DONCASTER, 



Naturalists and Manufacturers of 



CABINETS AND APPARATUS 



FOH ENTOMJLOGY, BIRDS' ERGS AND SKINS. AND AIL 

 BRANCHES OF NATURAL HISHIRY. 



SPECIAL SHOW-ROOM FOR C/VBINETS. 



N B. — For Ksc Hence and Superiority "I Cahinem aii.t App.i ..[n-, refer- 

 ences are perini.t-;d to distinguished patron^. Museums, Cnllcgts, i^c. 



A LARGE STOCK OF INSECTS, BIRDS' EUQS AND SKINS. 



SPECIALITY Objects for Nature Study, Drawing 



' Classes, &c. 



Birds, Mammals, &c.. Preserved and Mounted by First-class 



Worlimen true to Nature. 



All Books and Publications on Natural History supplied. 



36 STRAND, LONDON, W.C. 



(Five Doors from Charing Cross.) 

 I*- Our Calnlnijiie (9(i pp.) ro.st fne on iii>J>li<'"i"i<- 



ROCKS, MINERALS, FOSSILS 



For Colleelors, Students, Technical Schools. Colleges, &e. 



COl.l.KCIIONb IN PDl.lSHKII liKM. Il...\l!..>. 



as Specimens, 5/6; 50 do., 10/6; 100 d-.., 21/-; 200 do., 42/- 



I 20 Coal Measure Rocks and F ,ssils, 12/6; Jo., larger, 15/-. 



Adapted for the Board of Education Examinations In 



Geology, Physiography, and Mineralogy. 



A tttrg, stock a/ Minerals., Roiki, fossils and Microscopic Objtcls for 



Specimens sent on approval. 

 mmers. Chisels, Card Trays, Glas 

 Models of Crystals. &c., &c. 

 NEW CATALOGUE POST FREE 



< Cabinets, Geologists' H 



THOMAS D. RUSSELL, 78 Newgate St., London, L C 



MIGROSGOPIOAL PETROGRAPHY. 



Gentlemen interesteil in ihe above sludy are invited to send to 



JAMES R. QREGORY & CO., 



I Kelso Place, Kensington Court, London, W., 



f.ir H Pn.spcclns ui 



THE TWENTIETH CENTURY ATLAS OF 



MICROSCOPICAL PETROGRAPHY, 



I now being issued in Twelve .Montlily Part., e.-i..h Pai t containing Four Fine 



Hall- Tone Pl.iles, and al,o Four .ictual Ruck Sections. 



Subscription in advance, either Monthly, 7/-; Quarterly, 21/-; 



or for the , whole Series ot 12 Monthly Parts & 48 Sections, £4 4s. 



MINERALS, ROCKS, FOSSILS. 



A large stock of BRITISH AND FOREIGN MINERALS always on view, 



A SPECIALUY. 

 rs and Students on Saturdays. Ope 



ill 7P.1 



Special display for Te, 



RICHARDS' SHOW ROOMS, 



3 Beauchamp Place, Erompton Road, South Kensington, 

 London, S.W. 



ALBERT EDWARD JAMRACH 



(Late CHARLES JAMRACH), 



NATURALIST, 



i8o ST. GEORGE STREET EAST. 



Implements of Savage Warfare, Idols, Sacred Masks, P-jruvian Pottery, 

 Netsnkis China, Lacquers, Gongs, Sheds, and other Curi.,s, 



THE NEW COLLECTION OF 



336 SPECIMENS AND SLIDES OF ROCKS, 



according to H. ROSENBUSCH: "Elemente der 

 Gesteinslehre, 2d e;l. 190L" 



Accompanied by a te.vt-book : ^'Practical Petrography," givine a shoi t 

 description of the polarizing microscope and its application, and also of the 

 macroscopical and microscopical features of every specimen of this collec- 

 tion, by Professor Dr. K. Kusz of the University of Miinsier. This 

 collection is intended for the practical use of students, and contains typical 

 representatives of all important types of rocks; it is composed of 277 

 mas,ive rocks (94 deep-seated rocks, 50 dike rocks, 133 volcanic rocks), 

 28 sedimentary, and 3t crysialliue schists. Out of it two sm.-tller collections 

 of 250 and 16; specimens have been selected. The prices are as follows ;— 

 Collection I. 336 Specimens of Rocks ... 380 Marks. 



I... 336 Slides 420 



II. 250 Specimens of Rocks ... 270 



Ila. 250 Jilides 310 ,, 



111. 165 Specimens of Rocks - . 170 

 ilia. 165 Slides 205 



COLLECTIONS OF MINERALS, FOSSILS, METEORITES, 

 PURCHASED FOR GASH OR EXCHANGED. 



The fifth edition of Citalot^ae No. 4, J\l,v^rap/iy, has just 

 been published (2 10 pages), and will be sent tree of charge on 

 application. 



Dr. F. KRANTZ, 



RHENISH MINERAL OFFICE, BONN-ON-RltlNE, GERMANY. 



ESTA/'.L/.'iH KD 1833. 



MICROLOGICAL LABORATORY AND SCHOOL OF NATURAL SCIENCE. 



GRATIS AND POST FREE. 



Scientifically arranged dialogue of Megascopic and Microscopic 



Specimens is n -.v being pr.;pared. (ieutlenreil are invited to send in their 



applications without delay, as only 5000 copies will be issued. 



Sample Slide of expertly prepared ROCK. SECTION, 1/-, post free. 



Metals, Minerals and Rocks e.rpcrtly mounted for Microscope, 



1/- each, fr im material supnlied. 



LESSONS IN PRACTICAL LITHOLOGY BY CORRESPONDENCE. 



.\ vacancy for one Geijlogical Studenr, desirous of passing with high dis- 

 tinciionin (Jniversiiy or Civil Service. Small premium. Pocket-money 

 allowed- .-l/>/>/i:— The Directok. Micboloi.icai. Laiioratokv, 



II ASPENLEA ROAD, HAMMERSMITH. LONDON, W. 



LIVING SPECIMENS FOR ■ 

 THE MICROSCOPE. 



Volvox, Spirogyra, Desmids, Diaioms, Amteha, ArceDa. Actino>plia:rium, 

 Vorticella, Stentur, Hydra, Floscularia, Stephanoceros, Melicerta, and many 

 other specimens of Pond Life. Price is. per Tube, Post Free. Helix 

 p .matia, Astacus, Aniphioxus, Rana, Anodon, &c., for Dissection purposes. 



THOMAS BOLTON, 



25 BALSALL HEATH ROAD. BIRMINGHAM. 



MARINE BIOLOGlCAi^ ASSOCIATION 

 OF THE UNITED KINGDOM. 



THE LABORATOKY, PLYMOUTH. 



The fullowmg animals can always be supplied, eitbei living 

 or preserved by the best methods : — 



Sycon ; Clava, Obelia, Sertularia ; Actinia, Tcalia, Caryophylila, Alcy 

 onium ' Horinipbora (preserved); Leploplana ; Llneus, Amphiporns 

 Nereis! Aphrodite, Arenicola, I.anice, leiebella ; Lcpas, Balan 

 Gammarus, Ligia Mv>is, Nebalia, Carcinus ; Pa. ell; 

 Pectens Bugula, Crisia, Pedicellina, Holothuri! 

 Ascidia. Salpa (preserved), ScyUmm, Raia, & 



For prices and m 



Biological Labor 



: detailed lia 

 T,, Plyn 



apply I 



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