A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE 



" To the solid ground 

 Of Nature trusts the mind which builds for aye." — Wordsworth 



No. 506, Vol. 20] 



THURSDAY, JULY 10, 1879 



[Price Sij^pence 



Registered as a Newspaper at the General Post Office.] 



[All Rights are Reserved. 



BROWNING'S ANEROIDS. 



"The Aneroid is the best Weather-Glass male." — Cobnel Sir Hf.xrv James's "Treatise on Meteorological 

 Instruments.'' 



Small Ancr^jid, metal ca;e, dial 3 inches diameter, on carvel oak stand si;nilar t J aLuvc I'l'.r.cni £0 12 6 



Full-size Aneroid, suiierior constnic'-i^n, with dial 5 inches diameter, on carved oak stand, as above engraving X2 5 

 I'ull-size Aneroid, best con-trnction, villi enamel dial 5 inches diameter, on extra carved oak stand, as 



engraving above £3 5 



Illustrated Catalo^i^ue of Meteorological Instruments sent post free. 



JOHN BROWNING, 



OPTICAL AND PHYSICAL INSTRUMENT MAKER TO H.M. GOVERNMENT, THE ROYAL SOCIETY, 

 ,, THE ROYAL OBSERVATORIES OF GREENWICH, EDINBURGH, &c., ice. 



6 3, STRAND, W.C, LONDON. 



FACTORY— SOUTHAMPTON STREET and EXETER STREET, LONDON. 

 PRIZE MEDAL, 1862. Telescopes, Spectroscopes, Opera Glasses, &*c., &'c. ESTABLISHED 100 YEARS- 



