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Institgy~ 
= =Gci 23 1918 
A WEEKLY ILLUSTRATED JOURNAL OF SCIENOKK&tiona| Nyse? 
‘To the solid ground = 
Of Nature trusts the mind which builds for aye.’’-—WoRDSWORTH. 
No. 2293, VOL. 92] / THURSDAY, OCTOBER 9, 1913 ae [PRIcE SIXPENCE 
Registered as a Newspaper at the General Post Office.) {All Rights Reserved. 
& WEIGHTS 
REYNOLDS & BRANSON, Ltd., 
Chemical and Scientific Instrument Makers to His Majesty’s 
Government (Indian, Home, and Colonial), Laboratory 
Furnishers and Manufacturing Chemists. 
" The “RYSTOS” 
J CONDUIT DEVELOPING 
TANK. 
(REGp.) 
For use when _ developing 
photographic plates by the Time ® 
or Stand Method, with conduit 
for circulating the developer by 
inclining the tank at intervals, 
thus preventing uneven develop- 
ment. With light-tight lid and 
removable rack. 
Size Price in Copper Price in Ger. Sit. 
| }-pl. mae as Beles Sct Rael 9/- a 11/- 
t Ke 
| BUY DIRECT FROM s, in. x4, ae “Do.” * 916 11/6 | Pos 
: HATTON WALL Seaieebin ete: 8 ae ee | a, 
_ [EE-BECKER &CO. eee oS Be Se 
Other sizes at proportionate prices. 
(W.&J.GEORGE. LTD.,SUCC#S) LONDON, E .C. 
New Catalogue, 104 pages, post free on application. 
14 COMMERCIAL STREET, LEEDS. 
LS 
JOHN J. GRIFFIN & SONS, L” 
i Negretti & Zambra’s Latest 
> KINGSWAY. .C. : : 
P = » LONE WP Autographic Rain Gauge, 
—s Scientific Tnstrument Makers. The ‘FERNLEY,’ 
| THE— Pp ©) WwW provides frictionless action 
yn e without delicate mechanism, 
(C. V. Boys’s Patent.) . ak 
For Studying Liquid Films. very open rain an time 
*S ——— 2 scales, and a chart with 
Gay? uniform spacings. 
ae poane For particulars, and explanation 
| combinations a of diagram, write for pamphlet to 
of Infinite Wonderful NEGRETTI « ZAMBRA 
Variety. > Beauty. 38 Holborn Viaduct, London, E.C. 
; ; City Branch: 45 Cornhill, E.c. 
s iol ; ‘ 
) Price 2S/= Packing apd Carriage West End: 122 Regent St. W. 
' Including 2 Bottles of special Soap Solution and Full Instructions. 
we 
