XXXIV 



NATURE 



[Dec. 5, 1878 



MICROSCOPIC OBJECTS 



Of tuperlative perfection, illustrating Histology and every branch of Micro- 

 scopy. Catalogue post free and gratis on application. 



PARIS UNIVERSAL EXHIBITION, 1878. 



Prize Medal awarded for Excelleuce, Variety, «5>v, 

 EDMUND WHEELER, 48N, Tollington Road. HoUoway, London, N. 



UNIVERSITY OF LONDON. ~ 



1ST M.B. AND PRELIMINARY SCIENTIFIC EXAMINATIONS. 



Classes in all the subjects required are now being formed at Sf Thomas's 

 Hospital Medical School, i.which are not confined to Students '.f the 

 Hospital. 



For part iculars appl y to Dr. Gilles pie, Secretary, at the Hospit.il. 



INSTITUTE of CHEMISTRY~oFGRE^T 

 BRITAIN and IRELAND. 



An EXAMINATION in Practical Chemistry, in connection with the 

 Institute of Chemistry, will be held during the last week of JANUARY 

 next. Examiner, Dr. W. J. Russell, K.R.S. 



Candidates can obtain further information on application to the Secretary, 

 Mr. Charles E. Groves, Somerset House Terrace, Lo ndon, W.C. 



SUNDAY LECTURE SOCIETY.— LEC- 



TURES at ST. GEORGE'S HALL, Langham Place, each SUNDAY 

 AFTERNOON, commencing at Four o'clock precisely. Sunday, 

 December 8.— Channkl Law, Esq., F.C.S., on "Discoveries by Aid 

 of the Spectroscope ; partly with reference to the Sun and Stars." 

 With Oxyhydrogen L.-intern Illustrations. Members' Annual Subscrip- 

 tion, ;£i. Payment at the Door— One Penny, Sixpence, and (reserved 

 seats) One Shilhng. 



EDGBASTON HIGH SCHOOL FOR 



GIRLS, LIMITED.— Assistant Mistresses will be Required Next 

 Term, Subjects : Classics, History, Natural Science. Salary from 100/. 

 to 150/. according to qualifications. 

 AppLcations, with full particulars, to be sent to the Head Mistress, 284, 

 Hagle y Road, Birmingham. 



DUNHEVED COLLEGE (LIMITED), 



LAUNCESTON, CORNWALL. 



Seven hours from London. Shparate Bedrooms. Systematic Teaching 

 in Science, Foreign Languages, and University Courses. 



Calendar post free from 

 The Principal— BENJAMIN RALPH. LL.B. Dub. 



LIBRARY OF HARVARD UNIVERSITY, 

 CAMBRIDGE, MASS., U.S.A. 



Packages for the General Library, or for any of the Departmental 

 Libraries (A>tronomical Observatory, Botanic Garden, Bussey Institution, 

 Divinity School, Law School, Museum of Comparative Zoology, Scientific 

 School), may be sent to the Agents, Messrs. TxCbner & Co., 57 and £9, 

 Ludgateliill, London. 

 JUSTIN WINSOR, Librarian. 



BERNERS COLLEGE.— The Laboratory 



and Class Rooms are open for Private and Class Study, morning and 

 evening. ANALYSES performed. Especial arrangements for Gentle- 

 men and Ladies preparing for the various Examining Boards. Fees 

 moderate. — Apply to Prof. Gardner, at Bemers College, 44, Bemers 

 Street. W 



WITHERNDEN SCHOOL, CATERHAM 



VALLEY, SURREY.— Principal, Mr. C. H. LAKE, B.A. Lond. fm 

 Honours). Education on Natural Principles. A limited number of Pupils. 



ROYAL POLYTECHNIC— CLASSES for 



the preparation of Students for University Examinations, under the 

 direction of EDWARD B. AVELING, D.Sc, F.L.S. London Uni- 

 versity Matriculation, ist and 2nd B.Sc. , Prehminary Scientific M. B., 

 Botany, Physiology, Chemistry. All the work practical. 



CERATODUS FORSTERI. 



FOR SALE.— A Fine Specimen, well Pre- 



served in Spirit. For particulars inquire of E. Higgins, 22, Bloomsbury 

 Street, London. 



16,000 COLEOPTER A.— Every British 



SPECIES.— Mounted New Style, on Cardboard, without Pins. Par- 

 ticulars sent. — Henry Sissons, Westbcume Road, Sheffield. 



NATURAL HISTORY AGENCY. 



Collections of Insects, Bird and Mammal Skins, Eggs, Shells, Skeletons 

 &c., bought or sold on Commission. 

 N.B. — Wanted Good Specimens of Native Implements of War. 

 A. H. JAMRACH, 218, East India Road, London. E. 



LANTERN SLIDES.— Size, 3^ in. square ; 



i8j. per do2en. Skeletons, Skulls, &c., of Mammalia; Pond-life, In- 

 sects, &c., enlarged from Microscope. List for stamp. — JOHN 

 BURTON, F.R.M.S., 50, Portland Road, Nottingham. 



THIN GLASS FOR MICROSCOPIC 



MOUNTING, of best quality. Circles, 3J. td. per ounce ; Squares, 

 2J. 9</. ; post free id. extra ; Ground-edged Slips, 51. per gross : alio 

 ether Mounting Materials and Objects prepared for mcunting.— CHAS. 

 J'tTlT, 151, High Street, Stoke Newingtcn, N. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



THOMAS BOLTON, MICROSCOPIST'S and NATURALIST'S 

 STUDIO, 17, ANN STREET BIRMINGHAM. 

 RAPHIDIOPHRYS PALLIDA, 



The Freshwater Rhixopoda of F. Schnlie figured in Arcliiv /ii/ 

 mikroskop. Anatomic, vol. x. Plate xxvi. fig. i. 



Also Hoscules, some fine Mclicerta ringens, and Volvox glcbator, &c. 

 Price List of Specimens on Application, with Stamped Addressed Envelope. 



Weekly Announcements will be made in this place of Organisms ready 

 for sale. 



ENGRAVINGS AND ELECTROTYPES 



FOR SALE, at prices ranging from is. to loi., in good condition, ready for 

 printing. Small, medium size, and large engravings, comprising a great 

 variety of subjects, suitable for PubHshers, Advertisers, and Amateurs. 

 Specimen of any subject required sent post free on application. 



FACSIMILE OF SIGNATURE for 3s. An .xact copy of any name 

 guaranteed. These signatures being engraved in bold relief, are useful for 

 Stamping Books, Circulars, and Documents, or Marking Linen, and made 

 type-high for ordinary Letterpress Printing. 



Sent post free to any address on receipt of 36 stamps. 



75, FLEET STREET, LONDON, E.C. 



ARTISTIC— To Ladies and Gentlemen with 



some leisure time, desiring to supplement their incomes, an opportunity 

 is offered of acquiring the ART of DRAWING and ENGRAVING 

 on WOOD in a thoroughly satisfactory and perfect style. The terms 

 are moderate, and the hours can be made to suit the convenience of 

 pupils. Persons residing in the country can receive full instruction by 

 correspondence. For further particulars call or address Mr. J. Frank- 

 lin Nash, Artist and Engraver, 75, Fleet^Street, London, E.C. 



GEOLOGY.— In the PreTaCe to the Student's \ 



ELEMENTS of GEOLOGY, bv Sir Charles Lyell, prise 9s., he says : ' 

 — "As it is impossible to enable the reader to recognise rocks and mine- 

 rals at sight by aid of verbal descriptions or figures, he will do well to ' 

 obtain a well arrangecl collection of specimens, such as may be procured 

 from Mr. TENNANT (145, Strand), Teacher of Mineralogy at King's 

 College, London." These Collections are supphed on &c following 

 terms, in plain Mahogany Cabinets :— 



leo Specimens, in Cabinet, with 3 Trays ... ... ... £2 a o 



200 Specimens, in Cabinet, with 5 Trays 5 5 o 



30a Specimens, in Cabinet, with 9 Drawers 10 lo o 



400 Specimens, in Cabinet, with 13 Drawers 21 • o 



More extensive Collections at 50 to 5,eoo Guineas each. 



SHEPPEY FOSSILS. 



W. H. SHRUBSOLE, Sheerness-on-Sea, respectfully intimates that 

 the appeal recently made by him has been so heartily responded to, that he 

 cannot receive any more orders for " extra selected "specimens at present. 



Orders for loj. Collections of 100 "good" specimens can be executed 

 without delay. 



" NOTES ON THE GEOLOGY OF SHEPPEY " post free on appli- 

 cation. 



EOZOON CANADENSE. 



JAMES R. GREGORY has just received a large number of very fine 

 Specimens of the above, at all prices ; also Sections of the same, cut f jr 

 the microscope. Price of Specimens polished, 5^., loj., and upwards. 

 Microscopic Sections, post free, 2s. 2d. each, of 



JAMES R. GREGORY, 

 GEOLOGICAL MUSEUM, 



88, CHARLOTTE STREET, FITZROY SQUARE, 



LONDON. 



SCIENTIFIC CHRISTMAS PRESENTS. 



Collections of FOSSILS, ROCKS, or MINERALS, arranged in Walnut 

 stained and pohshed Cabinets with Lock and Key. Size of Specimen--, 

 2 square inches. 100 Selected, 20s. 200 Selected, 40^. 

 Catalogue free. 

 *»* No charge for p.-icking. Carriage free to all parts of Great Britain. 

 "THE POPULAR SCIENTIFIC POCKET CABINET SERIES," 



(Second Edition.) 



Gems, Minerals, Metals, Fossils, Rocks, Shells, &c., &c. 25 Specimens 



in Cabinet, ar. lod. carriage paid. 



THOMAS J. DOWNING (MINERALOGIST), 



38, WHISKIN STREET, LONDON, E.C. 



THE "HANSA," 



Published since 1E64, in Hamburg; is the only independent professional 

 paper in Germany, dedicated exclusively to Maritime Objects. Essays, 

 Critiques, Reviews, Reports, Advertisements. Strict eye kept upon the deve- 

 lopment of Maritime Affairs in every respect. Every second Sunday one 

 Number in 410 at least ; frequent supplements and drawings. Subscription 

 at any time ; preceding numbers of the year furnished subsequently. Price 

 12/. for twelve months. Advertisements ^d. a line, widely spread by this 

 paper; considerable abatement for 3, 6, 12 months' insertion. Business 

 Office: Aug. Meyer and Dieckmann, Hamburg, Alterw?Il, 28. Edited bj 

 W. V. Freeden, M.R., Hamburg, Alexander Street, 8. 



