June 12, 1879] 



NATURE 



li 



MINERALOGY AND GEOLOGY. 



A New List of Collections of Fossils, Minerals, and Rocks now ready, 

 including Special Collections to iliustrate the various Text-books, in 

 Cabinets. List of Sections of Rocks for the Microscope. Blowpipe Appa- 

 ratus and Materials of all kinds in Cases or separately. New Patterns of 

 Geological Hammers, with prices. List of N«iw and Second-hand Books of 

 JAMES R. GREGORY, 

 MUSEUM OF GEOLOGY, 



88, CHARLOTTE STREET, FITZROY SQUARE. 



JUST OUT. 



A QUARTERLY CIRCULAR for the PRO- 



FESSOR, STUDENT, and CONNOISSEUR in GEOLOGY and 

 MINERALOGY, &c., &c. 



BEING A LIST OF 



THOMAS J. DOWNING'S LATEST ARRIVALS OF 



ROCKS. 



FOSSILS, 



MINERALS, 



APPARATUS, COLLECTIONS, NOTICES, &c. 



Published at 38, Whiskin Street, London, E.C. 



Free on receipt 0/ Postage. 



ELECTRICAL, SCIENTIFIC, & PHOTO 



GRAPHIC APPARATUS.- Electric Bells, Fire ard Thief Alarms, 

 and Automatic Switches. Induction Coils, Frictional Machines, Lamps, 

 and Batteries. Microphones, Wires, Magnets, Carbons, and all Mate- 

 rials. Repairs and AUeraticns. New Illustrated Descriptive Catalogue, 

 one Stamp. Cameras, Dry Plates, Sensitive Paper, and all Chemicals. 

 Photo. List free.— DALE & CRAMPl'ON, Manufacturing Opticians 

 4, Little Britain, London, E.C. 



The LANCASTER POCKET CAMERA 



for plates ^\ X 3I inch, havine: three double dry-plate Slides, Umbrella 

 Stand, best Lens with plate of Diaphragms, &c., &c., £$. Particulars 

 free 



The LANCASTER CARTE PHOTOGRA- 

 PHIC APPARATUS, with Chemicals, &c., &c.. complete. ^3 5*. 

 FIRST QUALITY ASTRONOMICAL TELESCOPES with Object 

 Lenses, by Wray, zl-inch, £s ^- '■• aj-inch, £-j 10s,; 24-inch, £iq; 

 3-inch, £t.2 ros.; 3j-inch, ;^i5i5J. ; 4-inch, £'2%', 45-inch, ;^4o ; 

 5-inch, £sS' &c. Capital Student's Microscope, ^£3 y. Collegian's 

 First Quality Microscope, jC'^ 5*. Illustrated Catalogue, 3 Stamps. 

 J. LANCASTER & SON, Opticians, Birmingham. 



MINERALOGY. 



COLLECTIONS FOR STUDENTS FROM 41.— SINGLE SPECI- 

 MENS FROM 3rf.— TABLE OF HARDNESS, m. M— HAMMERS 

 AND CHISELS.— A GOOD SERIES OF POLISHED DEVONIAN 

 CORALS AND CONGLOMERATES. 



FINE SIBERIAN MINERALS. 

 PEIVATE LESSONS AND EVENING CLASSES. 

 SAMUKL HENSON, 



277 {Late 1 133), STRAND, W.C. 



PAGET'S PATENT 



GARDEN ENGINES, 



WORKED BY THE FOOT AND MOST CONVENIENT. 



£0 18s. 



no tub 



Sold retail by all Ironmonger.s and 

 Seedsmen, and wholesale by the Manu- 

 facturers, 



PAGET <& CO., 



LOUGHBOROUGH. 



Full particulars sent on application, 



GARDENING ILLUSTRATED: a new 



Weekly Journal for all interested in Gardening in Town or Country. 

 Price \d. weekly. Profusely Illustraicd. Flowers, Fruits, Vegetables, 

 Town and Suburban Gardening, Villa Gardening, the Cottage Garden, 

 Window Gardening, Work tn the Garden for every week. May be had 

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 for twelve nioQths for 6x. 6</. Specimen copy, \\H, in stamp». Office, 

 37, Southampton Street, Covent Garden. London, W.C. 



Now ready, the JUNE Number of 



THE PROCEEDINGS OF THE ROYAL 



GEOGRAPHICAL SOCIETY AND 

 MONTHLY RECORD of GEOGRAPHY. 



Published under the Authority of the Council, and Edited by H. \V. B,iTES, 

 Assistant-Secretary. 



Contents, 

 The Annual Address on the Progress of Geography. By Clements R. 



Markham, C.B. 

 Admiralty Suri-eys, 1378-3. By Capt. F. J. Ev.tns, R.N., C.B. 

 The Mardi.™ Hills and the Lower Indravati in the Bustar Dependency. By 



Capt T. H. Holdich, R.E. 

 Geographical Notes. 



Obituary Notices — Me:no'rof Commr. G. C. Musters. 

 Map— The Bustar Dependency. 



Price to Non-Fellows, xs. 6d. 

 EDWARD STANFORD, 55, Charing Cross, S.W. 



THE ENTOMOLOGIST'S MONTHLY 

 MAGAZINE. 



Price Sixpence, Monthly, 24 pages 8vo, with occasional Illustration*. 

 Conducted by J. W.Douglas, R, McLachlan, F.R.S., E. C. RyE,F.Z.S, 



and H. T. Stainton, F.R.S. 

 This Magaxine, commenced in 1864, contains standajfd articles and notes 

 on all subjects connected with Entomology and especially on the Insects o£ 

 the British Isles. 



Subscription— Six Shillings per Volume, post free. The volumes com- 

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Vols. I. to V. (strongly bound in cloth) may be obtained by purchasers of 

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London: JOHN VAN VOORST, i, Paternoster Row. 

 N.B. — Communications, &c., should be sent to the Editors at the above 



address. _^ 



THE BEST FARMERS' NEWSPAPER. 



THE CHAMBER OF 

 AGRICULTURE JOURNAL 



AND FARMERS' CHRONICLE, 



Edited by John Algernon Clarkh, 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 18,000 

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

 intelligence of particulai value to the agriculturist. 



The London Com, Seed, Hop, Cattle, and other Markets of Monday ar« 

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

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

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



Published by W. PICKERING, 21. Arundel Street, Strand, W.C.S 



LA SEMAINE FRANCAISE : a Weekly 



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LA SEMAINE FRANQAISE: Journal Frangaise pour 



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LA SEMAINE FRANgAISE.— "'La Semaine Fran- 



gaise' has been brought out In London for the benefit of those English 

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LA SEM.-\INE FRAN(;AISE.— "Tel est le litre d'un 



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 les nieilleurs articles, politi [ues, critiques, et litt^raires, qui ont paru 

 pendant la semaine dans les journaux de Paris. Assur6mcnt le numero 

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LA SEM.AINE FRANCAISE.— "The numbers before 



us are full of good things It will be far better for most than any 



one of the best papers publislied in Paris itself. We are much nloased 

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