ClXXXVlIl 



NA TURE 



[September 7, 1905 



LATEST IMPROVED 'SE" 



DOUBLE-SURFACE 

 I CONDENSER. 



Overcomes the many disadvantages of 

 previous patterns, which militate to a 

 great extent their usefulness and gen- 

 eral adoption in laboratories. 



Answers equally well for distillati 

 steam, ordinary distillations, or und< 

 pressure. Easily cleansed by 

 densing tube. 



In case of breakage (chances of which 

 duced to a minimum), any part may be 

 renewed at very small cost, or, in fact, 1 

 from the stores of any ordinary laboratory. 



May be used in any position, with or 



Takes less than one-third the ben( 

 ordinary Liebig type condenser. 



For distillations under reduced pi 

 fractions have to be separated, the fract 

 end (as shown in Fig.) will be found e^ 

 useful and convenient. 



Condenser, S/6 ; Fractionating End, XO/'6; 

 Complete Apparatus (as ^bown), SO/-- 



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 INSTRUMENT T) 



CoinnrisiniS < AMPEREMETER, VOLTMETER, GALVANOMETER, WHEAT- 

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LATEST INTRODUCTION 



m "JWmt" Rcfkx Camera 



For Day-Liglit Loading Flat Films or Plates. 



The Ideal Camera for Photograpliing Figure Studies, Animals, Natural History 



Subjects, Architecture, Landscapes, &c. 



The picture can be viewed the full size and focussed right up to the moment 



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AY AND Sons, Limited, at 7 & S Bread Street Hill, Queen Victoria Street, in the City of London, and published by Macmillan 

 . Martin's Street, London, W.C, and The Macmillan Company, 66 Fifth Avenue, New Yorlc. — Thubsdav, September 7, 1905. 



