





















A WEEKLY ILLUSTRATED JOURNAL ¢ QF Seka R 
“* To the solid ground 
Of Nature trusts the mind which builds for aye. ”-—-Worpswe iyo, oe 


ay “5 ‘ . 


No. 2793, VOL. 111] 
SATURDAY, MAY 12, 1923. 


[PRICE ONE SHILLING 


Registered as a Newspaper at the General Post Office.) 
= __{All Rights Reserved. 


BALANCES & WEIGHTS 
F.E.BECKER & C® 
W. & J.GEORGE (LONDON) "2 PROPRIETORS 
7 10 29 HATTON WALL, LONDON. E.C.| 




Particulars and Prices on application to— 
Kemble Street, Kingsway, 
London, W.C.2. 
oy tes 
age To. 
4 
JOHN J. GRIFFIN & SONS, LT. 


REYNOLDS & BRANSON, Lo. 
Chemical and Scientific Instrument Makers to His Majesty’s 
Government (Home and Overseas Dominions), Laboratory 
Furnishers and Manufacturing Chemists. 
TANGENT GALVANOMETER, 
having mahogany frame and base 
with levelling screws, brass compass, 
box, antiparallax mirror, and agate 
centred needle, with aluminium 
pointer. The coil has three windings 
of 2, 50, and 500 turns respectively, 
and can be revolved on the base to 
adjust the needle to the magnetic 
meridian. 
PRICES AND PARTICULARS 
ON APPLICATION. 
CHEMICAL, PHYSICAL, and TECHNICAL LABORATORIES fully 
equipped with Balances, Benches, Fume Chambers, Apparatus, 
Chemicals, A.R. Reagents, etc. 

Catalogues on application. 
14 COMMERCIAL STREET, LEEDS. 

CTTTTPIUMIMUOAUNTHUUORIROAUNOT LUN UULAPUULUDLUOOLUPEO OUELLETTE 
EGRETTI @ ZAMBRA 
38, HOLBORN VIADUCT.E C11. 
LONDON. 
Manufacturers of 
Meteorological Instruments 
to British and Foreign 
Governments. 
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