A WEEKLY ILLUSTRATED JOURNAL. OF SCIENCE. 
“< To the solid ground 
Of Nature trusts the mind which builds Sor aye. Ww ORDSWORTH. 
NO. 1547, VOL. 60] THURSDAY, JUNE 22,, 1899. [PRICE SIXPENCE. 
Registered as a Newspaper at the General Post Office.] le RIES are Reserved. 
| ‘Victoria’ ato Outhes 
_ From £1 1s to £10 10s. 
“NEWTON & CO.'S 
TOURISTS’ a” & FIELD GLASSES. 
Tourist’s Telescope, with Caps and Strap, £2 ros. to £3 35. 
Race Giass, in Sling Case, £1 10s. 
Dirto, with changing Eye Lenses, £3 10s. to £5. 
Opera GiasseEs, in Case, from 155. 
AtuMiInium TELESCOPE, Portable, with Caps and Strap, from £4 4s. 
ALUMINIUM FieLD or Race Gtiass, in Case, with Strap, from 43 ros. 
A.tumiNniuM Ditto, with 3 Sets of Eye Lenses, in Case, from £5 5s. 
ALUMINIUM OPERA GLASSES, from £2 15s. 
NEWTON & CO. 
OPTICIANS TO THE QUEEN AND GOVERNMEN7, 
°3 FLEET STREET, LONDON. 
A NEW GAS FURNACE 
(Holloway’s Patent) 
FOR CHEMISTS AND ASSAYERS. 
POPULAR 
PRICES. 
C GATALOCUE 
BACKGROUNDS ON APPLICATION. 
JAMES sriath SONS & CO., LtD., 
VICTORIA BRIDGE, MANCHESTER. 
THE = _ ANEROO. 
oii ote -COOK’S. .) 
| For Measuring Altitudes ‘without Calculation. 
(New ItiustraTED Price List FreE By Post.) 
Made only by 
NEGRETTI & ZAMBRA, 
LESS CRACKING. 
PARTS SEPARATE. 
a) Se _ 
All particulars from SOLE MAKERS: 
JOHN J. GRIFFIN & SONS, LoD. 
20-26 SARDINIA STREET, LONDON, W.C. 
SCIENTIFIC INSTRUMENT MAKERS to THE QUEEN, 
38 HOLBORN VIADUCT, E.C. 
BRANCHES : 46 CORNHILL; 122 REGENT STREET. 
