wT 
—— 
IL lll 
A WEEKLY ILLUSTRA 
TED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the 
No. 2306, VoL. 92] | 
THURSDAY, JANUARY 8, 1914 
mind which builds for aye.'’—\Worpswortu. 
[PRICE SIXPENCE 
Registered as a Newspaper at the (General Post Office. } 
~ (All Rights Reserved. 
a 
NEWTON’S 
NEW LANTERNS 
FOR 
Opaque Projection. 
Write for 
SPECIAL 
72 
WIGMORE 
STREET, 
LONDON, 
NEW ‘LONDON’ 
MICROSCOPE. _ 
THE HANDLE MODEL WITH 
LARGE BASE. 
FINISHED IN BLACK ENAMEL. 
This new model of the London Student's 
Microscope has an extra large and heavy 
base, giving it great stability. 
is on the Handle 
Model and the _illus- 
tration shows its con- 
venient pattern. 
4 
No. 1326 Stand...°3 1 
3644 Eyepiece 
802 4” Object 
, 
o 
° 
- 
oR 
° 
& 
2 
g 
392A Double 
Nosepiece 
No. 1328 Stand with 
focussing substage,£4.7.6 
(as illustration). 
R, & J. BECK, Ltd. 
68 CORNHILL, LONDON, E.¢. 
REYNOLDS & BRANSON, Ltd. 
GRAND PRIX AWARD, TURIN. 
SOLE AUTHORISED MAKERS OF 
STROUD & RENDELL SCIENCE LANTERNS. 
The ‘* University” Lan- 
tern, with Russian iron 
body, sliding baseboard, two 
superior objectives, plane 
silvered mirror “A,” which 
is moved by a knob causing 
the rays to be reflected 
upwards for the projection of 
objects in a horizontal plane, 
condensers 4} in, diam., prism 
with silvered back which can 
be used at “CC,” or as an 
erecting prism in mount ‘ D,” 
lime-light burner, slide carrier. 
Price complete in_ travelling 
case, without reversible adjust- 
able stage ‘‘B,” £10 6 
Ditto, ditto, with ‘ Phoenix” Arc Lamp as it +0 Lit 
Reversible adjustable stage ‘‘ B" for supporting apparatus, extra 7 6 
The ‘College’ Lantern, without adjustable stage, with 
lime-light burner complete ay cae ae «2S, SG 
Ditto, ditto, with ‘‘ Phoenix” arc lamp _... we A . 910 0 
Slit and prism for spectrum with support, for either lantern... 1 7 6 
Polariser and analyser = i 00 
Catalogues post free. 
Optical Lanterns and Accessory Apparatus (New Edition). 
Abridged List of Chemical Apparatus and Chemicals, 44 pages. 
Mechanical Models for teaching Building and Machine 
Construction. 
124 COMMERCIAL STREET, LEEDS. 
Negretti & Zambra’s 
Latest Outdoor 
Thermometer 
pean 
orn, 
Kis 
is a ‘Six’s ” pattern—registering 
the highest, lowest, and present 
temperatures—with a scale of 
enamelled steel. This method 
of construction ensures Dura- 
bility, Legibility, and Cleanliness. 
Price, unframed, 6/-. Mounted 
in metal frame, as illustrated, 12/6 
Price List 
of *‘ Thermometers ” will 
be sent free on request. 
& ZAMBRA 
NEGRETTI 
38 Holborn Viaduct, London, E.C. 
City Branch: 45 Cornhill, E.C. 
West End: 122 Regent St., W. 
nian’ Inetit7g a 
n 
ia 
Wonal Muse 
