jan Inst) 
Zain | 
A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds for 21k TA ONS 
a@L 1 19 
Mationa Muse) 
No. 2225, VOL. 89] 
_Registered as asa 4 News BRSPES at the General ] Post | Office, J 
TPTIGAL CONVENTION 
Science Museum, S. Kensington, June 19-26, 
For the most up-to-date Optical 
Lanterns and Apparatus, Tele- 
scopes, Field Glasses, Sundials, 
and other Scientific Instruments 
of British manufacture, see our 
Exhibit at the above Convention. 
NEWTON & CoO., 
By Royal Warrant to H.M. the King, 
72 WIGMORE STREET, W. 
doun J, GRIFFIN g sans) 
KEMBLE STREET, 
KINGSWAY, LONDON, wW.c. 
MAKERS OF 
Physical Apparatus 
GRAND PRIX 
| DIPLOMA OF HONOUR 
3 GOLD MEDALS 
TURIN INTERNATIONAL EXHIBITION, 1944 
THURSDAY, JUNE 20, 1912 
_[PrIcE SIXPENCE _ 
[All Rights "Reserved. 
OPTICAL CONVENTION | 
Seena Mace Museum, TSouth Kentnon Kensington, 
June [9-26. 
EB SEE OUR EXHIBIT OF: 
4 Stroud & Rendell Science Lanterns. 
Aas i : Projection Microscope and 
Coos) Polariscope. 
Barr & Stroud Lantern Slide Making, and 
Photo-micrographic Apparatus. 
Arc Lamps. Dark Room Lamps. 
Developing Tanks, & other Scientific Instruments, 
REYNOLDS & BRANSON, LTD., LEEDS. 
| THE finest salty and latest improve- _||| 
| 
| 
ments are embodied in all our 
HEE SCOPES, 
and a new descriptive price list, giving 
. particulars “ of many 
portable and  astro- | 
nomical patterns, some | 
new stands, a list of 
publications, etc., etc., 
will be sent post free 
on request. 
NEGRETTI & 
ZAMBRA, 
Holborn Viaduct, 
London, E.C. 
Branches : 
45 Cornhill, E.C., 
122 Regent Street, W. 
