A WEEKLY ILLUSTRATED JOURNAL OF SCIENCK. 
“To the solid ground 4 to) Ka 
Of siti trusts the mind which builds for aye. Po aettan debe lal Musé 
No. 2459, VOL. 98] - THURSDAY, DECEMBER 14, 1916 [Price SIXPENCE. 
— = —= 
Registered as a Newspaper at the General Post Office.] {All Rights Reserved. 
LEZZZLEEEEEE Leff 
REYNOLDS £ SRANSO 
fer oe ammo 
J 
SN A Contractors to the War Office, Admiralty 
= and Egyptian Governments, &c 
8 | 
SS Ne 
“1 
= 
Manufacturers and Exporters of 
Chemicals, Chemical Glassware and 
Chemical and Physical Apparatus. 
OPTICAL & PHOTOGRAPHIC APPARATUS. 
LQ 
PURE CHEMICALS AND REAGENTS. 
LABORATORY FITTINGS & FURNITURE. 
OPTICAL LANTERNS AND SLIDES. 
Special designs of BLOWN GLASS executed 
by our own staff. 
Quotations and Price Lists on application. 
AXX KM MA 
BUY DIRECT FROM 
F E.BECKER & CO_BATTON WALL 
(QW.&0. GEORGE. LTD. SUCC4#) 
YidttddddaddIds TTT 
I¢ COMMERCIAL ST 
A New Barograph—THE “JORDAN.” = 
(Regd. Design 62871.) 
V 
Z 
Graphite-Selenium ells 
FOURNIER D’ALBE’S PATTERN. 
Great Stability and High Efficiency. 
With a sensitive Se surface of 5 sq. cm. and a voltage 20 the 
additional current obtainable at various illuminations (in 
metre-candles) is :— x 
At 1 m.c. ... .. + milliamp. 
Qe «50. ws a SOL 2 
EO. | 55... ss: Sagas oe = 
For particulars and prices apply to the SOLE AGENTS : 
iffi S | Shows at a glance the crticennaate! of the barometer during 
: the preceding days. 
John J. Gr In & ons, Descriptive Leaflet post free on application to 
Makers of Physical and Electrical Apparatus, NE GRE TT TL & ZAMBR A 
Kemble Street, KINGSWAY, 38 HOLBORN VIADUCT, E.C.: ; 
LONDON, W.C. 
45 CORNBILL, E.C.; 122 REGENT ST., W. 
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