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i\ WEEKLY ILLUSTRATED JOURNAL OF g[^^C^ "^^^'^^ 



" To the solid ground 



Of Nature trusts the mind which builds for aye." — VVoRDSV^ORTII. 



I Z«r r> £3 ^ KT TT IVE IB EI H,. 



No. 2243, Vol. 90] 



THURSDAY, OCTOBER 24, 1912 



Newspaper at the General Post Office. 1 



(All Rights Reserved. 



The "INST ANT A" 



INDUCTION COIL 



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 72 WIGMORE STREET, LONDON, W. 



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WHEATSTONE'S 



COMPOUND 



GYROSCOPE. 



Accessory parts are also 

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" B," 75 models, 



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{Descriptive Lisl on 

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Special Apparatus for Mackenzie and Forster's 



Theoretical & Practical Mechanics & Physics. 



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