A WEEKLY ILLUSTRATED JOURNAL OF SQECE. s 
“To the solid ground tonal Muse 
Of Nature trusts the mind which builds for aye."—Worbdswortn. ae. ; - 
No. 2448, VOL. 98] | THURSDAY, SEPTEMBER 28, 1916 [Price SIXPENCE. 
Registered as a Newspaper at the General Post Office.) [All Rights Reserved. 
: , REYNOLDS & BRANSON, Ltd., 
2 Chemical and Scientific Instrument Makers to His Majesty’s™* 
Government (Home & Overseas Dominions). Laboratory Furnishers 
(War Office Pattern) 
and Manufacturing Chemists. 
Tested and approved by Wool- 
wich Arsenal and offered for sale 
under licence from the Ministry 
of Munitions. Made throughout 
in our own Factory. 
NEWTON& CO. 
Scientific Instrument Makers to H.M. the King, 
72 WIGMORE ST., LONDON, W. 
‘ESTABLISHED OVER 200 YEARS. 
CHEMICAL, PHYSICAL, and TECHNICAL LABORATORIES 
| Fully Furnished with BENCHES, FUME CHAMBERS, &c. + 
INSTITUTIONS EQUIPPED INCLUDE :— 
The National Shell Filling Factory, Leeds, and various Munition Works ; 
Uhe National Physical Laboratory, Teddington ; Laboratories at’ Messrs. 
3runner, Mond & Co., Ltd., Northwich; Messrs. Meadowcroft & Son, Ltd., 
Blackburn; ‘The Shelton Iron, Steel and Caal Co. ; Science Laboratories 
at the Grammar School, Dunstable; Imperial Service College, Windsor ; 
Batley Grammar School; Transvaal Dept. of Agriculture (txperimental 
Farm), Potchefstroom ; ‘he Technical Schools, Morley and Yeadon ; The 
Girls’ High Schools act Barnsley, Beverley, Doncaster, Leeds. Nuneaton, 
Sherbourne, and York ; Radley College,‘ xford ; The Schools, Shrewsbury ; 
St. Mary's College. Winchester ; and many others. 
Catalogve of Chemical and Physical Apparatus:and Chemicals post free. 
Designs of Benches and Fittings to suit all requirements. 
14a COMMERCIAL STREET, LEEDS. 
Hoenn eee ee ee eee ee cc nee SeEEEEEEEEEEEEEEEEEEEEEEEEEEEEEtel 
(Regd. Design 62871.) 
TD. 
DUROGLASS L* 
14 CROSS STREET, HATTON GARDEN, E.C. 
A Manufacturers of 
Borosilicate Resistance Glassware. 
Beakers. Flasks, Etc. 
Soft Soda Tubing for Lamp Work. 
General Chemical and 
Scientific Glassware. 
Special Glass Apparatus Made to Order. 
DUROGLASS WORKS, WALTHAMSTOW. 
SOLE SELLING AGENTS: 
BAIRD & TATLOCK (LONDON) LTD. 
_ 14 CROSS ST., HATTON GARDEN, E.C. 
Shows at a glance the movements of the barometer during 
the preceding days. 
Descriptive Leaflet post free on application to 
NEGRETTI & ZAMBRA, 
38 HOLBORN VIADUCT, E.C.; 
45 CORNBILL, E.C.; 122 REGENT ST., W. 
