April lo, 1879] 



NATURE 



cl> 



XXXV 



DIARY OF SOCIETIES. 



London 



THURSDAY, April to. 

 Mathematical Society, at 8. 



TUESDAY, April 15. 

 Statistical Society, at 7.45.— On the Geographical Distribotion of the 

 Celtic-speaking Population of the British Isles: E. G. Ravenstein, 



WEDNESDAY, April 16. 



Meteorol»gical Society, at 7. — On the Results of Comparisons of 

 Goldschmid's Aneroids : G. M. Whipple, BSc., F.R.A.S.— Observations 

 on the Temperature of the Atlantic during the Month of March : P. F. 

 Reinsch. 



Croydon Microscopical Society, at 8.30. 



THURSDAY, April 17. 



Chemical Society, at 8. — On the Determination of Tartaric Acid in Lees and 



Inferior Argols, with some Remarks on Filtration and Precipitation: B. J. 



Grosjean. — On Ccnditicns affecting the Equilibrium of Certain Chemical 



Systems: M. M. P. Muir. 



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Yearly 30J. 6</. 



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BRYCE-WRIGHT'S LATEST ARRIVALS. 



GEMS. — Two very large Diamonds from the Cape, 35 and 32 



carats weight respectively. 

 MINERALS. — Magnificent Atacamites from Australia ; Rit- 



tingerite, Xanthocone, Native Amalgam, Large Topazes 



from Sibena. 

 METEORITES.— Very fine series of Aerosiderites. 

 STONE IMPLEMENTS.— Very fine coUection from the 



Valley of the Mis>issippi. Very rare Pottery from the same 



locality ; also specimens of Moquis Pottery. 



Catalogue on amplication. Price One Shilling. 



BRYCE-WRIGHT, 



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"HALL MARK" 

 FOR THERMOMETERS. 



The Kew Committee of the Royal Society hereby give Notice that after 

 this date all Thermometers verified at the Kew Observatory will be marked, 

 free of expense, with their monogram, "' K.O.," interlaced, and a raster 

 number, in addition to the maker's number. 



1 he Table of Errors will be furnished as usual. 

 By order, 



G. M. WHIPPLE, Superintendent. 

 Kew Observatory, December 13, 1878. 

 Scale of Charges for Verification, &c., pest free on application. 



TEXT-BOOKS OF SCIENCE. 



>T jw ready, with 6 Plates and 88 Woodcuts and Diagrams, in small 8vo, 

 price 4J. 6d? , cloth. 



The STUDY of ROCKS, an Elementary 



Text-Book of Petrology. By FRANK RUTLEY, F.G.S., of Her 

 Majesty's Geological Survfey. 



' ' We strongly recommend this work to all who are entering upon the 

 study of ge »logy, and who wish at the outset to lay a firm foundation." — 

 jfournai 0/ Science. 



" We desire to call attention to this work, which ought to have a peculiar 

 attraction for a large number of cur readers. We cannot refrain from re- 

 commending to special attention the short but able description of the defini- 

 tion and origin of rocks, which forms the subject-matter of the second 

 chapter." — Mining World. 



London: LONGMANS & CO. 



THE BRliWERS' GUARDIAN: 



A Fortnightly Paper devoted to the Protection of Brewers' Interests, 

 Licensing, Legal, and Parliamentary Matters. 

 Rkvikw of thk Malt and Hop Trades ; and Wink and Spirit Tsadk 

 Record. 

 The Organ of the Country Brewers. 

 "The Brewers' Guardian " is published on the evenings of every alternate 

 Tuesday, and is the only journal officially connected with brewing interests. 

 Subscription, i&f. (>d. per annum, post free, dating from any quarter-day. 

 Single Copies, u. each. Registered for transmission abroad. 

 Offices- s. Bond Court, Walbrook, London, E.C 



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79, PALL MALL. 

 For Lives only. Establishmj 1807. 

 Net Premiums and Interest ... .» ... .~ ... ~. ;ff 396,818 

 Accumulated Funds ... ... ... ... ... ... „. ... ;f 3,083.281 



Also a Subscribed Capital of more than ... ... >^i, 500,000 



Reports, Prospectuses, and Forms may be had at the Office, or from any 

 of the Company^s Agents, post free. 



GEORGE HUMPHREYS, Actuary and Secretary. 



Price is. Monthlv. 



MACMILLAN'S MAGAZINE 



FOR APRIL, 1879. 



CONTENTS. 



I. — "The Royal Family of Egypt." By Roland L. N. Michell, 



2. — " Haworth's." — By Frances Hodgson Burnett. Author of "That Lass 

 o' Lowrie's." Chapters XXXIII.— XXXVII. 



3. — " The Southern States of the American Union." By Archer Andersen. 



4. — " Recent Homeric Criticism. — Mr. Paley's Defence." By Prof- 

 Mahaffy. 



5. — " Chamouni and Rydal." By J. Truman. 



6.— "What is to be done with the Slums?" By W. T. McCullagh 

 Torrens, M.P. 



7.— "A Doubting Heart." By Miss Keary. Chapters XXIL, XXIII. 



8. — " Bums's Unpublished Common-place Book." By William Tack. 

 No. II. 



9. — "Reciprocity." No. III. The Best Remedy for the Present Indus- 

 trial Distress. By A. J. Wilson. 



MACMILLAN & CO., LONDON. 



NORTH BRITISH AGRICULTURIST, 



Is the only Agricultural Journal in Scotland, and circulates extensively 

 amongst landed proprietors, factors, farmers, farm -bailiffs, and others 

 interested in the management of landed property throughout Scotland and 

 the Northern Counties of England. 



The AGRICULTURIST has also a very considerable eirculation on the 

 Continent of Europe, America, Australia, and the Colonies. 



The AGRICULTURIST is published every Wednesday afternoon in 

 time for the evening mails, and contains Reports of all the principal British 

 and Irish Markets of the week, besides telegraphic reports of those held o» 

 the day of publication. 



The Veterinary Department is edited by one of the leading Veterinarianj 

 in the country, and is invaluable to the breeder and feeder as a guide to the 

 rearing of animals, and their treatment when labouring under disease. 



Full Reports are given of the Meetings of the Royal Agricultural Society 

 of England, the Royal Agricultural Society of Ireland, the Highland and 

 Agricultural Society of Scotland, the Scottish Chamber of Agriculture, 

 and all the principal Agricultural Associations throughout Great Britain 

 and Ireland. 



For Advertisers addressing thenKelves to Fanners a better medium doe* 

 not exist. 



Price yi. By post, ^d. Annual Subscription, payable in advance, 14/. 



Office. — 377, High Street, Edinburgh. 



Post-Office Orders payable to Charles Anderson, Jtm., Edinburgh. 



Established 1843. 

 Price ^d. 



THE TELEGRAPHIC JOURNAL 



AND 



ELECTRICAL REVIEW 



For April ist, 1879, contains : — 



I. — Leader : The Cape Cable. 



2. — New Experiments upon Telephones, without Diaphragms. By the 

 Count du Moncel. (Illustrated.) 



3. — Edison's New Telephone Receiver. (Illustrated.) 



4. — Note on the Distinctive Features of the Microphone. By M. Navet 



^. — Bramao's Telegraph Instrument. (Illustrated.) 



6. — Professor H ughes on Induction. 



7. — A New Kind of Telegraph Cable. 



8.— Fuller's Electric Light. 



9. — A New Duplex System. By E. A. Turner. 

 10. — Shuckert's Dynamo-Electric Machine. (Illustrated.) 

 II. — Notes. 



12. — New Patents — 1879. 

 13. — Prcceedings of Societies. 

 14-— City Notes. 



London: HAUGHTON & CO., 10, Paternoster Row. 



LIGHTNING CONDUCTORS, 



Experience, accumulated since the time of Benjamm franklm, p c o T Cj 

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It is simple in its application, no insulators being required, and it costs 

 only one shilling per foot for the standard sise, which is safe in any storm. 

 R. S. VTB'WAIiIi Al CO.- 130, STRAND, W.C. 



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