XVI 



NATURE 



{May 8, 1879 



THE TELEPHONE COMPANY, LIMITED, 



36, COLEMAN STREET, LONDON, E.G. 

 SOLE PROPRIETORS OF BELL'S AND OTHER PATENTS. 



Tklbphones and all necessary Instruments Supplied for Domestic or Business Purposes, on Sale or Rentai,. 



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

 Dwellings ; also for Lines of Wire Communicating between LIGHTHOUSES and the Shore ; Shipping Offices and Vissels 

 in Poet ; 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 further information to be made to the Manager. 



CHEMICAL APPARATUS-SCIENTIFIC INSTRUMENTS. 



Porcelain, Glass, Stone, and Hetal Apparatus for Chemical and Philosophical Purposes and Lectures. 

 ELECTRICAL, MEDICAL, AND EXPERIMEN-TAL COILS AND APPARATUS. 



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



ELECTRIC LAMPS FROM 85s. UPWARDS, AND BATTERY OF 40 QUART BUNSEN'S CELLS FOR SAME AT £8. 



GEISSLER'S TUBES. 



CaimUgues and Illustrations tvill be sent gratuitously. A Liberal Discount allowed to Wholesale Buyers. 



WHOLESALE IMPORTERS and MANUFACTURERS. 



Sets of Apparatus 

 according; to Professor 

 Valentin'i *'Book of 

 Chemistry," Professor 

 Attfield*s *' Manual o€ 

 Chemistry/' &c., always 

 in stock. 



AUG. BEL and CO., 



Sole Agents for Grenefs Batteries, and Contractors t« tht Government. 



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



Sets of Apparatus as 

 required by the Goveia- 

 meut Schools always 

 ready aud kept in stock. 



CAILLETET'S APPARATUS FOR L IC^UEFACTION OF GASES- 



For the convenience of Teachers and Students at the South Kensington Classes, the Science and Art Department has authorized U5 to keep a stock ia 

 the stor«-room, first floor of the budding, where the different sets and other articles are always ready for delivery. 



THE BEST FARMER S' NEWSPAPER. 



THE CHAMBER OF 

 AGRICULTURE JOURNAL 



AND FARMERS' CHRONICLE, 



Edited by Johk Algernon Clarkb, Secretary to the Central Chamber 



of Agriculture, 

 Devotes special attention to the discussions and proceedings of the Chamber 

 of Agriculture of Great Britain (which now number upwards of jS.ooo 

 members), besides giving original papers on practical farming, and a mass of 

 intelligence of particular value to the agriculturist. 



The London Com, Seed, Hop, Cattle, and other MarkeU of Monday are 

 specially reported in this Journal, which is despatched the same evening so 

 as to ensure delivery to country subscribers by the first post on Tuesday 

 morning. Price 3^. , or prepaid, 15*. a year post free. 



Publishsd by W. PICKERING 21, Arundel Street, Strand, W.C. 



'1 



"That excellent periodical The Gardem."— Professor Owen. 



THE GARDEN : A W^eekly Illustrated 



Journal ofOardening in all its Branches. Founded and Conducted b; 

 W. ROBINSON, F.L.S., Author of " Alpme Flowers for 

 Gardens," &c. , ^i ^ j 



A. Coloured Plate is now issued with every number of Fhe Gurden. 



" Mr. Robinson's valuable and elegant 'HitMy ." —Saturday Review, 

 Atig. loth, 1872. - - - . 



The following are some of the subjects regularly treated of m its pages :— 



The Flower Garden. 

 Landscape Gardening. 

 The Fruit Garden. 

 Garden Structures. 

 Room and Window Gardens. 

 Notes and Questions. 

 Market Gardening. 

 Trees and Shrubs. 



Hardy Flowers. 



Town Gardens. 



The Conservatory. 



Public Gardens. 



The Greenhouse and Stove. 



The Household. 



The Wild Garden. 



The Kitchen Garden. 



Professor Asa Gray says : " It seems admirably adapted to the wants and 

 Castes of gentlemen who are interested in rural affairs. By such we hear it 

 highly spoken of; and we think we do a favour to those of that class who 

 know it not as yet, by calling attention to it." 



Price 6d. Weekly. Specimen Copy, Post-free, 6Jrf. 



Terms of Subscription. -Sent direct from the Office in London, post free, 

 payable in advance— For One Year, 261. ; Half a Year, 14J. ; Quarter of a 

 Year, 71. Address all letters concerning Subscriptions to— The Pubhsher of 

 Tlu Garden, 37. Southampton Street, Covent Garden, London, WC. 



LA SEMAINE FRAN^AISE : a Weeklyj 



Newspaper and Review in the Frsnch Language. Politics, Literature,! 

 Science, Art, Varieties, Notes. Price ^. , through booksellers, acdatf 

 the railway bookstalls. Office, 37, Southampton Street, Strand, W.C. 



LA SEMAINE FRAN^AISE : Journal Fran^aise pourJ 



rAnglcterre : Politique, Litt^rature, Sciences, Arts, Vari6t^s, Nouvelle^l 

 et Notes. Un exemplairc par la poste, ijd., en timbres poste. Abonne-J 

 ment franco par la poste — un an, i8j. ; six mois, o*. ^. Prix <^d., ches| 

 tous les libraires et aux gares des chemins de fer. On s'abonne auK] 

 bureaux, 37, Southampton Street, Strand, Londres, W.C. 



LA SEMAINE FRAN^AISE.— "'La Semaine Fran-I 



^aisc' has been brought out in London for the benefit of those English J 

 readers who may wish to siudy contemporary French from all points efS 

 view, instead of confining their reading to one particular Gallic print, j 

 It certainly merits success." — Graphic. 



LA SEMAINE FRANgAISE.— For all who read and| 



speak French. 



LA SEMAINE FRANCAISE.— For Teachers andl 



Schools. 



LA SEMAINE FRANCAISE.— For General and! 



Family Reading. 



LA SEMAINE FRANCAISE.— "Tel est le litre d'unl 



journal hebdomadaire, nous pourrions dire d*une revue de tous les iour-F 

 naux fraa9ais aco'^dit^s. Ce journal r^unit, sous le meme couveit, 34I 

 ou 32 pages grand format, et dans ces pages sont publics, en franjais,! 

 les meilieurs articles, politique?, critiques, et htt^raircs, qui ont parul 

 pendant la semaine dans les journaux de Paris. Assur£:meat le numero] 

 que nous avons sous les ycux est un excellent specimen de ce que peutl 

 foire un heureux choix, guide par une intelligence parfaite de ce qui pea^ 

 int^resser les \ectcuis."—'Nouvelle Chronigue de Jersey. 



LA SEMAINE FRANgAISE.— "The numbers before! 



us are full of good things It will be far better for most than an^l 



one of the best papers published in Paris itself. We are much pleased^ 

 with the character of it, and believe it will be highly valued in all tha 

 many households where French is cultivated. The printing is very welt 

 done."— -^«««. 



P.0.0. payable to T. Spanswick. at King Street, Covent Garden, W.C 

 Terms of Subscription: — s. d. 



Three months 5 o 



Six „ 9 9 



Twelve „ 18 o 



Primed by R. Clay, Sons, and Taylor, at 7 and 8. Bread Street Hill. Queen Victoria Street, in the City of London, and published by 

 Macmtllan AND Co., at the Office, 39 and 30, Bedford Street. Corent Garden.— Thursday, May 8, 1879, 



