NATURE 



[May 1 8. 1905 



LATEST IMPROVED '%T 



DOUBLE-SURFACE 

 CONDENSER. 



Overcomes the many disadvantages of 

 previous patterns, which militate to a 

 great extent their usefvilness and gen- 

 eral adoption in laboratories. 



Answers equally well for distillations with direct 

 steam, ordinary distillations, or under reduced 

 pressure. Easily cleansed by removing inner con- 

 densing tube. 



In case of breakage {chances of which are re- 

 duced to a minimum), any part may be readily 

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

 from the stores of any ordinary laboratory. 



May be used in any position, with or without 



Takes less than one-third the bench roo 

 ordinary Liebig type condenser. 



For distillations under reduced pressur 

 fractions have to be separated, the fract 

 end (as shown in Fig.) will be found extremely 



WOODHOUSE 

 INCLINED PLANE. 



eful and 



Condenser, S/6 ; Fractionating End, 10/6; 

 Complete Apparatus (as shown), 30/-. 

 SOLE MAKERS- 



C. E. MtJLLER, ORME & CO., Ltd. 



148 HIGH HOLBORN, LONDON. 



Price 2S'- 



TOWNSON & MERCER, 



34 CAMOIVIILE STREET, E.C. 



THE NEW HIGH POTENTIAL APPARATUS 



(GRISSON RESONANCE TYPE). 



|[B^' Illustrated Descriptive Pamplilet now ready, post free. 



THE NEW GRISSON VALVE 



(ELECTROLYTIC RECTIFIER). 



iP^ Illustrated Descriptive Pamphlet also now ready, post free. 



ISENTHAL & CO., 85 Mortimer Street, London, W. 



Contractors to tlie Admiralty, War, India, and Colonial Offices, ic. 



THE LONDON STEREOSCOPIC COfOPftNY'S 



LATEST INTRODUCTION 



Cbc "Jlrtlst" Reflex Camera 



For Day-Light Loading Flat Films or Plates. 



The Ideal Camera for Photugraphing Figure Studies, Animals. Nalural History 

 I Subjects, Architecture, Landscapes, &c. 



[he picture can be viewed the full size and focussed light up to the moment 

 of exposure. 



Write for Fully Illustrated Rooklet (N) Free fr.im 



106 & 108 REGENT ST., W., or 54 CHEAPSIDE. 



Primed by Richard Clay anu Sons, Limited, at 7 & S Bread Street Hill. Queen Victoria Street, in the City of London, and published by Macmi 

 AND Co., Limited, at St. Martin's Street, London, W.C, and The Macmillan Company, 66 Fifth Avenue, New Vorl;.— Thursday, Maj- 18 lot 



