WEEKLY ILLUSTRATED JOURNAL OF SCIENCr."^.' 



11 To the solid ground 

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



BALANCES &WEIGHTS 



John J. Griffin & Sons, L 



KINGSWAY, LONDON, W.C. 



Scientif ic Instrument m akers. 



<fj±\ _ (C. V. Bovs's Patent.) ^^ 



For Studying Liquid Films. 



Marvellous 

 Colour- 

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 of Infinite 

 Variety. 



Priipp O^*^/— Packing and Carriage 



X-riCe ^fiO/- in United Kingdom, 1/- 



Including 2 Bottles of special Soap Solution and Full Instructions. 



REYNOLDS & BRANSON, Ltd., 



Chemical and Scientific Instrument Makers to His Majesty's 

 Government (Indian, Home, and Colonial), Laboratory 

 Furnishers and Manufacturing Chemists. 



"Rystos" Bench, 

 showing; bottles 

 with enamelled 

 labels on eachside. 



idents as supplied 

 the Modern School, 

 Bedford, &c. 



CHEMICAL, PHYSICAL, and TECHNICAL LABORATORIES 

 Fully Equipped with BENCHES, FUME CHAMBERS, &c. 



Institutions equipped : — 

 The Girls' High Schools at Barnsley, Beverley, Doncaster, Leeds and 

 Nuneaton ; Radley College, Oxford ; The Schools, Shrewsbury ; Wellington 

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Service College, Windsor ; and many others. 



Catalogue of Chemical and Physical Apparatus and Chemicals, 550 pp. 



and 1,500 Illustrations, postjree on application. 



Designs of Benches and Fittings to suit all requirements. 



14 COMMERCIAL STREET, LEEDS. 



ANEMOMETER 



recording the 

 PRESSURE and 

 the DIRECTION 

 upon one chart. 



Write for 



'Particulars 



of the Anemo- 



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NEGRETTI&ZAttBRA, 



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London. 



