/ 
\S 
A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 
“To the solid ground 
Of Nature trusts the mind which builds Jor aye.’ —WORDSWORTH. 
No. 1549, VOL. 60] THURSDAY, JULY 6, 1899. [PRICE SIXPENCE. 
Registered as a Newspaper at the General Post Office.] ee Rights are Reserved. 
NEWTON & CO.’S | [ Victoria’ Hote Guta 
HEAP TELESCOPE. From £1 1s to £10 10s. 
HIGH 
Look-out Telescope, having a 3-in. Object-Glass, Body | 
ube of Brass, 34 feet long, fitted with Rack and Sliding | 
ubes for Adjustment, mounted Altazimuth with Metal Cradle 
ad Bearings on Mahogany Stand, 5 feet high. The Terrestrial 
tye-piece will show a church clock at ro miles distance, and | 
4e Astronomical Eye-piece the Moon, Jupiter, Saturn, and | 
ivide many of the Double Stars. £7 10s. 
CATALOGUE OF TELESCOPES ON APPLICATION. 
CATALOGUE 
___ NEWTON Vi ce: 8 pS | : es CAE 
3 ove awo coveesrex” | VAMES WOOLLEY, SONS & 6O.. LTO, 
3 FLEET STREET, LONDON. VICTORIA BRIDGE, MANCHESTER. 
A NEW DEPARTURE in CHEMICAL BALANCES. NEGRETTI & ZAMBRA’S 
BALANCE on Poisiec BINOCULARS AND TELESCOPES. 
POPULAR 
PRICES. 
Mahogany Base, Three Makers of the ‘OFFICER OF THE WATCH” TELESCO 
egies Makers ; oR OF a Wé UESCOPE, 
Levelling Screws, &c., in use on all the vessels of H.M. Navy. 
Plummet for levelling. 
Adjusting Screws for 
counterpoising Be 
Steel Knife Edges. 
Will carry 100 grms. i 
each pan and turn with 
1-2m.g. 24/- 
—Fr 
=: 
bea) 
Nickel-plated, covered with Brown 
Leather. 
PRITIGH qos cst pre aehOS. 
BeRnece.D DERN ITION & Hig H POWE 
2} 12 p Se 2-2, 
| - i “ Ls i Pe 
As supplied by NEGREDM| & ZAMBRA to ulate War Office. 
Length, when closed, 11 inche Combining high px and portability. 
BALANCE as above, with Agate Badges bound in Brass. Will carry 100 NEGRET TEP Rg 2 AMBRA, 
Eros, andeuemWwith 0-5 29/6 SCIENTIFIC INSTRUMENT MAKERS to the QUEEN, 
eae ed = HOLBORN VIADUCT, E.C. 
JOHN J. GRIFFIN & so NS, Lo, see 45 Senn p 122 Cee ie STREET. 
20-26 SARDINIA STREET, LONDON, W.C. IvLusTRATED Price Lists FREE BY Post. 
