ex 



NA TURE 



[July 13, 1905 



Dr. J. S. HALDANE'S 



p o IS rr A. :b Xj E 7i.i»i*-a.ii«.TXJs 



JFOK ANALrSIS OF MIJfJE GASES. 



(See " The Investigation of Mine Air" by Sir C. Le Neve Foster and 

 Dr. Hatdane. 1905, p. 116.) 

 The Apparatus is arransed in a portable Mahogany Cabinet, with a rod to 

 screw into the base, so that it 

 may be stood against the sides 

 of a gallery in " 

 the analysis made on the spot. 



The external 

 dimensions of the 



i^xM X 3J 

 inches, and the 



weight when 

 charged ready 

 for use is about 



five pounds. 



Dr. Haldane's Mine Gas Apparatus £3 17 6 



Mercury, pure, for 



bottle 

 Caustic Potash Sol 



bottle 



"The Investigation of M 



by Sir C. Le Neve Foster 



Dr. Haldane, 1905 



pint 



Air 



Sole IVlaKers: C. E. MULLER, ORMB & CO., Ltd., 

 148 HIGH HOLBORN. LONDON, W.C. 



THE 



WOODHOUSE 

 INCLINED PLANE. 



Price 2S/- 



TOWNSON & MERCER, 



34 CAMOMILE STREET, E.C. 



A REALLY FIRST=CLASS 



equal in workmanship and results to Tubes double the price. 



ISENTHAL & CO., 85 MORTIMER STREET, LONDON, W., 



Contractors to the Admiralty, War, India, and Colonial Offices, &c. 



;d by Richard Clav and Sons, Limited, at 7 & 8 Bread Street Hill, Queen Victoria Street, 111 the City of London, and published by .\UcMri.L/ 

 A,ND Co., Limited, at St. Martin'i Street, London, W.C., and The Macmillak Company, 66 Fifth Avenue, New York.— Thursday, July 13, 1505. 



