A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds for aye.’’-—Worpswortn. 
__ No. 2300, VoL. 92] | THURSDAY, NOVEMBER 27, 1913 [PRICE SIXPENCE 
Registered as a Newspaper at the General Post Office.) (All Rights Reserved, 
REYNOLDS & BRANSON, Ltd. 
GRAND PRIX AWARD, TURIN. 2 
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 “C,” 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 7 
Ditto, ditto, with “Phoenix” Arc Lamp... Oi oF Per. i Wb lis 
Reversible adjustable stage ‘‘ B" for supporting apparatus, extra 7 
The ‘* College” Lantern, without adjustable stage, with 
lime-light burner complete Kis gu late zs ~ 8 
Ditto, ditto, with “ Phoenix” arc lamp... ae at, yd 
Slit and prism for spectrum with support, for either lantern... 1 
Polariser and analyser ... ue 5 
NEWTON & Co.’s 
‘**DEMONSTRATOR’S” 
SCIENCE 
LANTERN. 
Sawaal 
Ba 
4 
H 
eal 
leh ee ery a | 
7) 
Best Value 
“ 
Illustrated Catalogue for Money 
Post Free on request, : ever yet 
offered. 
SCQASOM AOD 
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. 
14 COMMERCIAL STREET, LEEDS. 
a 
BECK’S FOCOSTAT LENS 
(HISCOTT’S PATENT). 
“HORTICULTURAL 
HYGROMETER” 
gives warning 
of probable 
Pak © § T. 
Price £1 1 0 
Description, and Price List of 
Thermometers, &c., sent free. 
This lens fits on to the handle of a Dissecting Instrument, 
_ Mapping Pen or Needle, and when once set is always in focus 
locostat). Those who have hitherto used a watchmaker's eye- 
lass or a lens on a stand will appreciate the advantage of this. 
cing fixed on the instrument itself, it is always in focus, as it 
7 moves with the instrument. It is invaluable to the Botanist, NEGRETTI & ZAMBRA, 
¥ Entomologist, Zoologist, and the Draughtsman, arog 5 ae E.c 
For Botany and Dissecting, complete with Needle ... “i ee 6 38 Holborn Viaduct, Lon On» aa 
a ya = ae ” 1 and two special City Branch : 45 Cornhill, E-C, 
24 Scalpels with fine pointed Blades <i ne Boh he 
West End: 122 Regent St, W. 
»» Draughtsmen, complete with Mapping Pens ae 
os » 5 6 
_R. & J. BECK, Ltd., 68 CORNHILL, LONDON, E.C. 
. 
