clxviii 



NATURE 



[March 27, 1879 



Just published, in 4/^, cloth, price ^os.; cr half-bound russia, 36^-. 

 VOLUME IX. (FAL— FYZ). 



ENCYOLOPiBDIA BRITANNICA. 



NINTH EDITION. 



EDITED BY 



PROFESSOR T. SPENCER BAYNES. LL.D. 



Edinburgh : ADAM & CHARLES BLACK. 



THE TELEPHONE COMPANY, LIMITED, 



36, COLEMAN STREET, LONDON, E.G. 

 SOLE PROPRIETORS OF BELL'S AND OTHER PATENTS. 



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



Estimates can be obtained for fitting up Telephonic Communication in Mines, Factories, Workshops, or Prtvate 

 Dwellings ; also for Lines of Wire Communicating between Lighthouses and the Shore ; Shipping Offices and Vessels 

 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 infringing the 



Company's Patents. 



Application for Price Lists or fm-ther information to be made to the Manager. 



JAMES WOOLLEY, SONS, & CO., 



69, MARKET STREET, MANCHESTER. 



CHEMICAL APPARATUS AND REAGENTS 



For Lecture and Class Demonstrition, Laboratory Instruction, &c. 

 SETS OF APPARATUS AND CHEMICALS 



For the various Public Examinations. 



Portable Chemical Cabinets adapted for private study. 



Price Lists on Application. 



CHEMICAL & PHYSICAL APPARATUS 



BOTTLES, PURE CHEMICALS, 



And every requirement for Science Classes, Private Study, or Business 

 Purposes. 



Illustrated Priced Catalogues post free for six stamps. 



Carriage allowed to any station in England or Wales, on orders of 40*. 

 value and upwards. 



MOTTERSHEAD AND CO 



7, EXCHANGE STREET, & 10, HALF MOON STREET, 

 MANCHESTER.- 



EUDOLPH KOENIG," 



(DR. PHIL.) 

 MANUFACTURER OF 



ACOUSTICAL INSTRUMENTS. 



TO ILLUSTRATE THE LAWS 

 AND TO PRODUCE THE PHENOMENA OF SOUND. 



PARIS, 26, RUE DE PONTOISE. 



PRICE LISTS FREE. 



W. L A D D & CO., 



Scientific Instrument Manufacturers 



{By Appointment to the Royal Institution of Great Britain), 



II & 12, BEAK STREET, REGENT STREET, W. 



BYRNE'S PATENT COMPOUND PLATE PNEU- 

 MATIC BATTERY for Cautery and general purposes. 



EDMUNDS' PHONOSCOPE for making Vocal Vibra- 

 tions visible in a Vacuum Tube. 



HUGHES' MICROPHONE. 



TELEPHONIC APPARATUS, &c. 



LADD'S IMPROVED SELF-CHARGING HOLTZ 

 ELECTRICAL MACHINE, with 4 to 12 PLttes, in- 

 closed in a Mahogany and Glass Case. This instrument is 

 immediately available in any condition of the atmosphere. 

 Philosophical Apparatus of every Description. 



Illustrated Catalogue, Sixpence. 



MICROSCOPES, OBJECTIVES, &c. 



CENTENNIAL EXHIBITION, PHILADELPHIA, U.S.A. 



The Medal and Highest Award has been given for Design, 

 Construction, Optical Excellence, and Moderation in Price, to 



HENRY CROUCH, 



66, BARBICAN, LONDON, E.G. 



Fully Illustrated Catalogue and full Instructions by Post, 6 Stamps. 

 Mailed abroad free. 



HORNE'S POMPEIAN DECORATIONS. 

 ROBERT HORNE, 



HOUSE DECORATOR and PAPER-HANGING 

 MANUFACTURER, 



41, GRACECHURCH STREET, LONDON, E.G. 



By Sp«cial Appointment to His Majesty the King of Italy. 



Printed by R. Clav, Sons, and Taylor, at 7 and 8, Bread Street Hill, Queen Victoria Street, in the City of London, and publishd by 

 Macmtllan and Co., at the Office, 29 and 30, Bedford Street, Covent Garden.— Thursday, March 27, 1879. 



