ll iesilieg oOo 
A WEEKLY ILLUSTRATED JOURN AL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds for ie 
cas DEPS WORTH, 
No. 2288, VOL. 92] THURSDAY, 
SEPTEMBER 4, 
1913 
[Price SIXPENCE 
Registered as a Newspaper at the General Post Office. ] 
STAM Rights Reserved, 
NEWTON & C0.'S 
*“ ACADEMY ” 
SCIENCE LANTERN 
A Marvel of Value. 
Illustrated Catalogue Post Free 
on request, 
THE HANDLE — 
LONDON MODEL. 
This is a new model, in which 
the limb is made so as to form 
a convenient handle for lifting 
the microscope. Otherwise it 
is similar to the ordinary 
London model. 
No. 1325. Stand, in case, 
£3 5 6 
No. 1329, Stand, in case, 
with spiral focussing 
substage ~400 
No. 364A, Eye- : 
piece ... 5 OO 
No. 801. ards 
Object Glass 
No. 803. ath 
Object Glass 110 O 
Futt ParticuLars OF 
R. & J. BECK, 
68 Cornhill, E.C. 
b» London: H. K. LEWIS, 136 Gower Street, W.C. 
LEWIS’S CIRCULATING “4 
MEDICAL AND 
SCIENTIFIC LIBRARY. 
Astronomy, Biology, 
Botany, Chemistry, 
Electricity, 
Engineering, 
Geography, Geology, 
Microscopy, Mining, 
Philosophy, Physics, 
Physiology, Sociology, 
Technology, Travels, 
Zoology, &c. 
In addition to 
Every Branch of 
Medical Science. 
The LIBRARY READING AND WRITING ROOM: is open 
daily for the use of Subscribers. 
New Works and New Editions are added to the Library 
immediately on publication. 3 
Subscription, Town or Country, from 21s. 
Prospectus, with Quarterly List of Additions, post free. 
The 
RECORDING 
RAIN GAUGE 
+The 
‘FERNLEY’ 
Latest 
= 
Write for 
descriptive 
NEGRETTI & ZAMBRA 
38 Holborn Viaduct, London, E.C. 
City Branch: 45 Cornhill, E.C. 
West End: 122 Regent St, W. 
pamphlet ! 
