June 15, 1905 J 



NA TURE 



PHCENIX 



ASSURANCE COMPANY. LIMITED. 



FIRE OFFICE. 



19 LOMBARD ST., E.G., and 57 CHARING CROSS, S.W. 



ESTABI.ISHBD 1782. 



Moderate Rates. Absolute Security. Blectrlc 



Llshtlngr Rules Supplied. Liberal Loss Settlements. 



Prompt Payment of Claims. 



LOSSES PAID OVER £30,000,000. 



BIRKBECK BANK 



ESTAKLISHKD 1851. 

 Current Accounts. 2/^ Interest allowed on minimum 



monthly balances when not drawn below j^ioo. 

 Deposits. 2i% interest allowed on Deposit Accounts. 

 Advances made. Stocks and Shares bought and sold 

 Apply C. F. Ravenscroft, Secretary, 



South.ampton Buildings, High Holborn, W.C. 



ORWAY. — S.Y. "MIDNIGHT SUIM." 



78 Tons. Two Berth Cabins. All lierths 

 same level. Finest yachting steamer afloat. 

 iling June 24 ; July 8, 22; August 5, 19. 

 Apply ALBION S.S. CO., LTU., 



Ncwcastk-on-Tyne. 



N 



12 12/- 



ROCKS, MINERALS, FOSSILS. 



For Collectors, Students, Technical Schools, Colleges, &o. 



COLLECTIONS IN POLISHED DEAL BOXES. 



75 Specimens, 5/8; 50 do., 10/6; 100 do., 21/-; 2'jo do., 42/- 



20 Coal Measure Rocks and Fossils. 12/6; do., larger, 16/-. 



Adapted for the Board of Education Examinations In 



GeoloRy, Physiography, and Mineralogy. 



A largt stock of Mintrals, Rocks, Fossils and Microscopic Objtcti fof 



St lection. SptcimtHS si Hi on a/>/ir07'al. 



Cabinets, Geologists' Hammers, Chisels, Card Trays, Qiass-capped 



Boxes, Models of Crystals, &c., &c. 



NEW CA.TALOGUE POST FREE 



THOMAS D. RUSSELL, 78 Newgate St., London, EC. 



LIVING SPECIMENS FOR 

 THE MICROSCOPE. 



Volvox, Spirogyra, Desniids, Diatoms, Amteba, Arcella, Actinosphaerium, 

 Vorticella, Stentor, Hydra, Kloscularia, Stephanoceros, Melicerta, and many 

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

 pomatia, Astacus, Amphioxus, Rana, Anodon, *lic., for Dissection purposes, 



THOMAS BOLTON, 



25 BALSALL HEATH ROAD, BIRMINGHAM. 



MARINE BIOLOGICAL ASSOCIATION 

 OF THE UNITED KINGDOM. 



THE LABORATORY, PLYMOUTH. 



The folluwing animals can always be supplied, eithei living 

 or preserved by the best methods : — 



Sycon ; Clava, Obelia, Serlularia ; Actinia, Tealia, Caryophylila, Alcy 

 onium ; Horiniphora (preserved); Loptoplana ; Lineus, Amphiporu.^, 

 Nereis, Aphrodite, Arenicola, Lanice, Terebella ; Lepas, Balanos. 

 Gammarus, Ligia Mysis, Nebalia, Carcinus ; Patella. Buccinum, ElodoDC, 

 Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echino,. 

 Ascidia, .Salpa (preserved), Scyllium, Rala, &t., &c. 



For prices and more detailed lists apply to 



liiological Laboratory, Plymouth. THE DIRECTOR. 



WATKINS & DOKCASTER. 



Naturalists and Manufacturers of 



CABINETS AND APPARATUS 



SPECIAL SHOW-ROOM FOR CABINETS. 



N.B.— For Kxcellence and Superiority of Cabinets and Apparatus, refer, 

 ences are [lermitted to distinguished patrons, IVIuseums, Colleges, .S;c. 



A LARQB STOCK OF INSECTS. BIRDS' KUOS AND SKINS. 



Birds, Mammals. &c.. Preserved and Mounted by Flrst-clas- 



Workmen true to Nature. 



All Books and Publications on Natural History supplied. 



36 STRAND, LONDON, W.C. 



(Kive Doors from Ch.iring Cross.) 

 am- \rw Catnrof/iie (lO'l pp.) jiixt issiiiil, past /rie. 



ALBERT EDWARD JAMRACH 



(Late CHARLES JAMRACH), 

 NATURALIST, 



180 ST. GEORGE STREET EAST. 



Implements of Savage W-arfare, Idols, Sacred Masks, Peruvian Poltciy, 

 Netsukis China, Lacquers, Gongs, Shells, and other Curios. 



TABLE OF RARE ELEMENTS. 



By E. L. N. ARMBRECHT. 



Symbols, Atomic Weight, Discoverer, Isolater, Specilic 



ty, P, 



Mijltiiig Point, Properties, Salts of, Pr 



ARMBRECHT, NELSON & CO., 

 71 & 73 Duke Street, Gi-osvenor Square, W. 



N.B.— Sent Free on application. 



MINERALS, ROCKS, FOSSILS. 



\ hug,- stock of BRITISH AND FOREIGN MINERALS .dways on viev 



A Sl'ECIALII Y. 

 .Special display for Teachers and Students on Saturdays. Open till 7 p.m 



RICHARDS' SHOW ROOMS, 



3 Beaucliamp Place. Brompton Road, South Kensington, 

 London, S.W. 



MIGROSOOPIGAL PETROGRAPHY. 



(icntlemen interested in the above study are invited to semi to 



JAMES R. OREQORY & CO., 



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



for a Prospectus of 



THE TWENTIETH CENTURY ATLAS OF 



MICROSCOPICAL PETROGRAPHY, 



now being issued in Twelve Monthly Parts, each P.lrt contalnini; I'our Fine 

 Half. Tone Plates, and also Four .actual Kock Sccti.ms. 



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

 or for the whole Series of 1 2 Monthly Parts& 48 Sections, £4 4s. 



NOTICE.— Advertisements and business letters for Nature should be addressed to the Publishers; liditortal 

 Communications to the Editor. The telegraphic address of Natukr is " Pliusis," London. 



SUBSCRIPTIONS TO •■NATURE." CHARGES FOR ADVERTISEMENTS. 



£ s. rf. I To ALL Places Abroad:- 

 Yearly . . . .180 Yearly . 



Half-yearly . . o 14 6 Half-yearly . 



Ouarterly . .076! Quarterly 



l s. d. £ 



. ,. 6 "Three Lines in Column . o 

 ^ j Per Line after . . . . o 

 ° '5 I One Sixteenth Page.or Eighth Col. 

 080 One Eighth Page, or Qu 



Haifa Fage,t 

 Column ". ' .018 6 I Whole Page 



" The first line being in heavy type is charged for as Two Lines. 



C'neaues and Money Orders payable to MACMILLAN C-^ CO., Limited. 

 OFFICE: ST. MARTIN'S STREET LONDON, W C. 



