A WEEKLY @ELUSTRATE 
D Pet OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which 
builds for aye.’,-—WorDsworth. 
No. 2232, VOL. 89] 
f - Registered asa ‘Newspaper a at ike General Post C Office. 1 
“INTENSE” HAND FEED 
ARC LAMP. 
Probably the most efficient Hand Feed Arc Lamp 
on the market. 
NEWTON & CO., 72 Wigmore Street, London, W. 
WRITE FOR SPECIAL ILLUSTRATED LEAFLET. 
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, incase, 
£3 56 
No. 1329. Stand, incase, 
with spiral focussing 
substage 400 
No. 364A, Eye- 
piece ... tf 
No. 801. ards 
Object Glass 
No. 803. jth 
Object Glass 110 O 
Fut PARTICULARS OF 
R. & J. BECK, 
THURSDAY, AUGUST ee 1912 
[Price SIXPENCE 
(All Rights Reserved. 
| REYNOLDS & BRANSON, Ltd. 
Awards gained in 1911 for Scientifi 
GOLD MEDAL, ALLAHABAD. GRAND PRIX, TURIN. 
“ RYSTOS " OPTICAL BENCH 
For use with the Stroud & Rendell Science Lantern. 
i pparatus— 
Optical Bench for lantern, one metre long, without fittings, £1 10 0. 
Sliding tables, 4/6 each. Lens holders, Adjustable slit, 4/9. 
Screen holder, 4/- Standard candle holder, 1/- Circular table, 1/6. 
Screen with gauze, 3/6. Half-metre extension with foot, 12/6. 
The above can also be used without the lantern as an ordinary optical 
bench, and any part can be supplied separately. 
Descriptive Giealar of Accessory Apparatus for the 
| & R.” lantern, post free. 
14 PS oa ee STREET, 
LEEDS. 
Student Equatorial 
‘Telescope 
-inch object glass, and circles 4 inches diameter 
the hour circle reading to 1 minute, the 
minutes. Complete in pine case, with 
3 eyepieces. 
with 3 
divided on brass, 
declination to 
J 
Illustrated List 
of Telescopes 
Jree on request. 
NEGRETTI 
& ZAMBRA, 
Holborn Viaduct, 
London, E.C. 
Branches: 
Cornhill, E.C. 
Ww. 
45 
122 Regent St,, 
68 Cornhill, E.C. 
