A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds for aes eee E SORT 
No. 2227, “VoL. 89] 
Registered asa ‘News spaper at the = General) Post Office. 1 
Has all the advantages 
of our well - known 
*Demonstrator’s” Lan- 
terns, and in addition 
will show brilliantly 
on the screen, opaque 
objects or book 
illustrations, 
if not larger 
than a large 
\ postcard. 
NEWTON'S NEW 
DEMONSTRATOR’S- 
“TRANSPAQUE” 444 
LANTERN. 
doun d. GRIFFIN 
KEMBLE STREET, 
KINGSWAY, LONDON, W.C. 
MAKERS OF 
Physical Apparatus 
GRAND PRIX 
DIPLOMA OF HONOUR 
3 GOLD MEDALS 
& SONS 
LTD. 
TURIN INTERNATIONAL EXHIBITION, 1944 
THURSDAY, JULY 4, 4, iota) 
"(PRICE SIXPENCE _ 
(All Rights Reserved. 
~ SECOND-HAND 
PRISM FIELD GLASSES 
In perfect con- 
dition at greatly 
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CLARKSON'S “°°2s82sP eave, 
338 HIGH HOLBORN, LONDON, W.C. 
(Opposite Gray’s ae an Road. 
The patent 
Anemo-Biagraph 
records the Velocity of the wind. 
The patent £20 0 0 
Wind Direction Recorder 
registers the Direction of the wind. 
£17 10 0 
And the Combined Apparatus re- 
cords the Velocity and Direction 
simultaneously upon one chart. 
£35 0 0 
Pamphle ole describi ing above 
and lis Ae Meteorolo 2g 5e ai 
0) Pach 
eteuments free on requ \\> in JP 7 
NEGRETTI & ZAMBRA, 
Holborn Viaduct, London, E. G. 
Branches: 
45 Cornhill, E.C.; 122 Regent Binal Wyse 
