SEPTEMBER 18, 1913] 
GLASS TOP | BOXES 
ROUND AND 
RECTANCULAR. 
LARGE STOCKS KEPT. 
Price List and Sample Box, 
id. stamp. 
FLATTERS & GARNETT, Ltd., 
309 OXFORD ROAD (°p5ircrsity’), MANCHESTER. 
Sales by Auction. 
STEVENS’ AUCTION ROOMS. _ Esrtp. 1760. 
A Sale by Auction is held EVERY FRIDAY 
at 12.30, which affords first-class opportunities for the disposal or 
urchase of SCIENTIFIC AND ELECTRICAL APPARATUS, 
licrosconae and Accessories, Surveying Instruments, ebatderep hi 
Cameras and Lenses, Lathes and Tools, Cinematographs and Films, 
and Miscellaneous Property. sig 
Catalogues and terms for selling will be forwarded on application to 
Mr. J. C. STEVENS, 
38 KING STREET, COVENT GARDEN, LONDON, W.C. 
ROCK SECTIONS FOR THE MICROSCOPE 
New List of over 600 well cut Rock and Mineral 
Sections now ready, post free from 
JAMES R. GREGORY 6& CoO., 
Mineralogists, Gc., 
139 FULHAM ROAD, SOUTH KENSINGTON, S.W. 
Telegrams: ‘‘ Meteorites, London.” Telephone : 2841 Western, 
LIVING SPECIMENS FOR 
THE MICROSCOPE. 
Volvox, Spirogyra, Desmids, Diatoms, Amceba, Arcella, Actinospherium, 
Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many 
other specimens of Pond Life. Price 1s. per Tube, Post Free. Helix 
pomatia, Astacus, Amphioxus, Rana, Anodon, &c., for Dissection purposes. 
THOMAS BOLTON, 
25 BALSAI.L HEATH ROAD, BIRMINGHAM. 
| eeepc 
MARINE BIOLOGICAL ASSOCIATION 
OF THE UNITED KINGDOM. 
THE LABORATORY, PLYMOUTH. 
The following animals can always be supplied, either living 
or preserved by the best methods :— 
Sycon; Clava, Obelia, Sertularia; Actinia, Tealia, Caryophyllia, Alcy- 
onium; Hormiphora (preserved); Leptoplana; Lineus, Amphiporus, 
Nereis, Aphrodite, Arenicola, Lanice, Terebella; Lepas, Balanus, 
Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Eledone, 
Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echinus, 
Salpa (preserved), Scyllium, Raia, &c., &c. 
For prices and more detailed lists apply to 
Biological Laboratory, Plymouth. THE DIRECTOR. 
NATURE 
XXXiii 
WATKINS & DONCASTER, 
Naturalists and Manufacturers of 
CABINETS AND APPARATUS 
FOR COLLECTORS OF INSECTS, BIRDS' EGGS AND SKINS, 
MINERALS, PLANTS, &c. 
N.B.—For Excellence and Superiority of Cabinets and Apparatus 
references are permitted to distinguished patrons, Museums, Colleges, &c. 
A LARGE STOCK OF INSECTS, BIRDS’ EGGS AND SKINS, 
SPECIALITY.—Objects for Nature Study, 
Drawing Classes, &c. 
Birds, Mammals, &e., Preserved and Mounted by First-class 
Workmen true to Nature. 
All Books and Publications (New and Second-hand) on Insects, 
Birds’ Eggs, &c., supplied. 
386 STRAND, LONDON, W.C. 
(Five Doors from Charing Cross.) 
FOLL CATALOGUE POST FREE. 
FOR ALL KINDS OF EDUCATIONAL 
Mineral Material, 
COMMON ORES, and SELECT CRYSTALLIZED 
SPECIMENS, at ALL PRICES. 
G. H. RICHARDS & CO., 
Dealers in all kinds of British and Foreign Mineral Specimens. 
Note new Address :— Lists free. 
48 Sydney Street, Fulham Road, South Kensington, London, $.W. 
SKELETONS ® SKULLS re 
Specimens and Preparations for Teaching é; 
BIOLOGY & ZOOLOGY 
and for Museums. 
Lists on Application. 
EDWARD GERRARD ® SONS 
Osteologists and Taxidermists, 
NATURAL HISTORY STUDIOS 
6I College Place, 
Camden Town, London. 
MINERALS, ROCKS, FOSSILS, APPARATUS, 
WIRELESS DETECTORS, AND MINERALS. 
KINDLY NOTE REMOVAL OF 
RUSSELL & SHAW, 
11 John Street, Theobald’s Road, 
are 
38 GT. JAMES STREET, BEDFORD ROW, 
LONDON, W.C., 
Third door (left side) from Theobald’s Road. 
NOTICE.—Adbvertisements and business letters for ‘“‘ Nature” should be addressed to the Publishers; Editorial Com. 
munications to the Editor. 
Sheen Sei ie 
2) Se «ont Olea R 0 
Half-yearly (26 Numbers) 
Quarterly (13 Numbers)... 
« i 8 
. 0 14 6 
Og at 
The telegraphic address of “‘ Nature” is “‘ Phusis,”” London, 
SUBSCRIPTIONS TO 
Telephone—Gerrard, 8830. 
“NATURE,” 
To all Places Abroad :— d. 
Yearly «sp 255 cp Se “a Si 6 
Half-yearly (26 Numbers) _... = 6 
Quarterly (13 Numbers).. Ns aoe 0 
(A charge of 6d. is made for changing Scotch and Irish Cheques.) 
Cloth Cases for binding “‘ Nature” are issued at 1s. 6d. each, and can he sent post free for ls. 9d. 
NET ann GES FOR ADVERTISEMENTS. 
. ad 
First Two Lines in Column... _... 2 6 
One Sintcenth Page, or Eighth Col 6 16 0 
ne Sixteent age, or t ol. 0 
One Eighth Page, or Quarter Col.... 18 6 
One Sixth Page, or One Third Col. 
Quarter Page, or Half a Column ... 
Half a Page, or a Column 
Whole Page ea gh act 
For the re-directien of replies to advts. a charge of 3d. per advt. is made. 
Cheques and Money Orders should be Crossed and made payable to MACMILLAN © CO., Limited. 
OFFICE: ST. MARTIN’S STREET, LONDON, W.C. 
