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A WEEKLY ILLUSTRATED JOURNAL OF .SCIENCE. 



" To the solid ground 

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









No. 2763, Vol. no] 



SATURDAY, OCTOBER 14, 1922 [Price One Shilling 



Registered as a Newspaper at the General Post Office.] 



[All Rights Reserved. 



BALANCES & WEIGHTS 



REYNOLDS & BRANSON, Limited, 



Chemical and Scientific Instr 



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___nt Makers to His Majesty'- 

 rseas Dominions), Laboratory 

 ufacturing Chemists. 



Resistance Boxes, P.O. Boxes, etc., manufactured in our own 

 Workshops. 



See Physical Catalogue. Post free on application. 



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CERTIFICATE 



OF 



EXAMINATION 



Fahrenheit Thermometer No. 



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