A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE 



" To the solid ground 

 Of Nature intsts tlu mind which builds for aye." — WORDSWORTH 



No. 4S8, Vol. 19] 



THURSDAY, MARCH 6, 1879 



[Price Sixpence 



P-egistered as a Newspaper at the General Post OfEce.] 



[All Rights are Reserved. 



BROWNING'S STANDARD METEOROLOGICAL INSTRUMENTS. 



Any of these Instrziments will be sent for verification to Kew Observatory if desired. 



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.llii.millll l IiilIIIiX!iL[ilJ 



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Standard Maximum Thermometer, on Phillips's principle, the divisions etched on the glass tube, and the 



figures enamelled on porcelain scale ... ... ••• ... ••• ... ••• £10 



Standard Minimum Thermometer to match the above maximum ... ... ... ... ... 100 



Standard Thermometer, metal scale, in morocco case 



2 2 



THE NEW SUN-LIGHT BECORDEB. 



This instrument will register automatically the number of hours of sunshine each day, as made by JOHN 

 BROWNING for the observatories of Kew and Oxford. It is one of the most interesting and useful instruments 

 yet introduced in Meteorology. 



Price of the instrument complete ... ... ... ... ... ... ... ... £18 10 



Illustrated Catalogue of Meteorological Instruments sent f>ost free. 



JOHN BROWNING, 



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



ROYAL OBSERVATORIES OF GREENWICH AND EDINBURGH, AND THE OBSERVATORIES OF 



KEW, CAMBRIDGE, DURHAM, UTRECHT, MELBOURNE, &C., See. 



63, STB AND, 'W.C 



FACTORY— SOUTHAMPTON STREET, LONDON, W.C. :, 



