—_ 
~~ 
No. 1825. Stand, in case, 
VOD, Pa 
A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds for aye.’ 
fee eee ORTH 
No. 2296, VOL. 92] 
THURSDAY, OCTOBER 30, 1913 
a Price SIXPENCE 
Registered as a Newspaper at the General Post Office.) 
. {All Rights .Reserved. 
The following Sections of NEWTON & 
CO.’S New Optical Lantern Catalogue 
are now ready, and all or any will be 
sent post free on request: -— 
Section A.—Lanterns for Libraries, Churches, etc. 
B.—Iluminants and Accessories (other than 
Arc Lamps). 
C.—Lantern and Cinematograph Exhibi- 
tions. 
D.—Oxy-Acetylene Apparatus. 
E.—Lantern Stands, Screens and Screen 
Stands, Slide Carriers and Boxes. 
F.—Arc Lamps and Resistances. Nernst 
Lamps, ete. 
G.—Projection Microscopes. 
H.—Science Lanterns. 
K.—Cinematographs and Accessories. 
72 WIGMORE STREET, LONDON, wW. 
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. 
£3 56 
No. 1329. Stand, incase, 
with spiral focussing 
substage - 400 
No. 364A, Eye- 
piece ... ee 
No. 801. ards 
Object Glass 
No. 803. th 
Object Glass 110 O 
Fut ParTicucars oF 
R. & J. BECK, 
68 Cornhill, E.C. 
REYNOLDS & BRANSON, Ltd. 
_ ‘THE “RYSTOS” EDUCATIONAL LANTERN. 
GRAND PRIX, TURIN, 1911. 
With io Body (suitable for any illumihant), side door and brass sight holes, 
walnut base, meniscus’ condenser 4% in. diameter, objective of superior . 
quality 2% in. diameter, 6, 7, 8, 9, 10 or x2 in. focus, with rack and 
pinion. Complete i in travelling case, but without burner ... £5 12 6 
Erecting Prism “C” in metal mount... 3s . extra 1 6 0 
“ Phoenix" Arc Lamp for above ... eo oh aa NS 220 
Lantern fitted with 44” condenser .. if é , 010 6 
Py at ral 
For Optical Lanterns of other designs, see catalogue, 
10th edition, 40 pages, post free. 
14 Commercial Street, Leeds. 
The syphoning arrangement 
Sf the *F ERNEEY’ 
Recording Rain Gauge 
is extremely ingenious, 
involving the minimum 
number of working parts. 
Write for pamphlet, and price list 
of “* Rain Gauges,” 
NEGRETTI « ZAMBRA. 
38 Holborn Viaduct, London, E.C. 
City Branch: 45 Cornhill, E.C. 
West End: 122 Regent St., W. 
sent post free. 
