Nov. 14, 1S78] NATURE xv 



THE TELEPHONE COMPANY, LIMITED, 



36, COLEMAN STREET, LONDON, E.G. 



SOLE PROPRIETORS OF BELL'S AND OTHER PATENTS. 



Telephones and all necessary Instjruments Supplied for Domestic or Business Purposes, on Sale or Rental. 



Estimates can be obtained for fitting up Telephonic Conununication in Mixes, Factories, Workshops, or Private 

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 in Port; Noblemen's Mansions and their Lodges, Stables, or Gamekeepers' Residences, &c,, &c. 



Agents Wanted. — A Liberal Discount allowed to the Trade. 



Proceedings will be taken against all Persons selling or using any Telephones, or otherwise infringii^ th^ 

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Application for Price Lists or further information to be made to the Manager. 



CHEMICAL APPARATUS-SCIENTIFIC INSTRUMENTS. 



Porcelain, Glass, Stone> and Metal Apparatus for Chemical and Philosophical Purposes and Leettires. 

 (.LECTRICAL, MEDICAL, AXD EXPERIMENTAL COILS AND APPARATUS. 



BUNSEN'S MODIFIED FILTER PUMPS, from 10s. 8d. to 67s. 



ELECTRIC LAMPS FROM 35s. UPWARDS. AND BATTERY OF 40 QUART BUNSEN'S CELLS FOR SAME AT £8. 



GEISSLER'S TUBES. 



Catalogues and Illustrations ■will bi sent gratuitously. A Literal Discount allomed to Wholesale Buyers. 



WHOLESALE IMPORTERS and MANUFACTURERS, 



Sets of Apparatus 

 according to Professor 

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 Attfield's " Manual o? 

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 in stock. 



AUG. BEL and CO., 



Sole Agents for Crenel's Batteries, and Contractors to the Covemment. 



34, Maiden Lane, Southampton St., Strand, W.C . 



Sets of Apparatus as 

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CAIL-LETET'S APPARATUS FOR L IQUEFACTION OF OASES- 



For the convenience of Teachers and Students at the South Kensington Classes, the Science and .\rt Department has authorized us to keep a stock in 

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JOURNAL OF A TOUR IN MAROCCO. By Sir 



JOSEPH D. HOOKER, K.C.S.I., C.B., P.R.S., &c. ; and JOHN BALL, F.R.S. With lUustrations and Map. 8vo. 



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SPORT AND WORK ON THE NEPAUL FRONTIER; 



or. Twelve Years' Sporting Reminiscences of an Indigo Planter. By "MAORI." With Illustrations. Svo. 



THE RELATIONS OF MIND AND BRAIN. By 



H. CALDERWOOD, LL.D., Professor of Moral Philosophy, Edinburgh. [/« the press. 



H EAT. By P. G. Tait, Professor of Natural Philosophy at 



Edinburgh. With numerous Illustrations. Crown Svo. [/« the press. 



SOUND. A Series of Simple, Entertaining, and Inexpensive 



Experiments in the Phenomena of Sound, for the Use of Students of every Age. By A. M. MAYER, Professor of 

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THE ENTOMOLOGIST'S MONTHLY 



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TO THE J Conducted by J. W. Douglas, R. McLachuin, F.R.S., E. C. Rtk, t.Z 



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MEDICAL PROFESSION. 



By C. B. KEETLEY, F.R.C.S., 



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