XXVI 



NATURE 



{Nov. 28, 1878 



MICROSCOPIC OBJECTS 



Of •operlative perfection, illustrating Histology and every branch of Micro- 

 scopy. Catalogue post free and gratis on application. 



PARIS UNIVERSAL EXHIBITION, 1878. 



Prize Medal aivarded for Excellence, Variety, &-'c. 

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



CERATODUS FORSTERI. 



FOR SALE.— A Fine Specimen, well Pre- 



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

 Street, London. 



ROYAL INSTITUTION OF GREAT 

 BRITAIN, 



ALBEMARLE STREET, PICCADILLY, W. 

 Lecture Arrangements before Easter, 1879. 



Lecture Hour, Three o'Clock. 

 Christmas Lectures. 



Prof. Dkwar, M.A., F.R.S.— Six Lectures on "A Soap Bubble ;" on 

 December 28 (Saturday), 31, 1878 ; January 2, 4, 7, 9, 1879. 

 Before Easter, 1879. 



Prof. Edward A. Schafsr, F.R.S., Fullerian Professor of Physiology, 

 R.I. — Twelve Lectures on "Animal Development ; " on Tuesdays, January 

 14 to April I. 



J. H. Gordon, Esq. — Four Lectures on "Electric Induction;" on 

 Thursdays, January 16 to February 6. 



Prof. Tyndall, D.C.L., F.R.S., &c.— Eight Lectures on "Sound, 

 including its Recent Applications and Methods of Reproduction ; " on 

 Thursdays, February 13 to April 3. 



Prof. H. G. Seelev, F.L.S., F.GS.— Three Lectures on "Reptilian 

 Life; " on Saturdays, January 18, 25, February i. 



Reginald W. Macan, Esq. (Ch. Ch. Oxford).— Four Lectures on 

 " Lessing ;" on Saturdays, February 8 to March i. 



Walter H. Pollock, Esq., MA. — Two Lectures on " Colbert and 

 Richelieu ; " on Saturdays, March 8, 15. 



F. Sev.mour Haden, Esq. — Three Lectures on "Etching;" on Satur- 

 jdays, March 22 to April 5. 



Prof. Dewar will give a Course of Lectures after Easter. 



Subscription to all the Courses in the Season, Two Guineas ; to a Single 

 Course, according to length. One Guinea, or Half-a-Guinea ; to the Christ- 

 mas Coiurse, Children under Si.xteen, Half-a-Guinea. Tickets now issued 



The FRIDAY EVENING MEETINGS will begin on January 17, at 

 8 P.M. Prof. Tyndall will give a Discourse on the Electric Light, at 9 p.m. 

 Succeeding Discourses will probably be given by Prof. W. E. Ayrton, Mr. 

 H. H. Statham, Rev. H. R. Haweis, SirWm. Thomson, Professors Roscoe, 

 Johnstone Stoney, and Huxley, Mr. E. B. Tylor, Prof Abel, Sir Henry 

 C Rawlinson, and Dr. Warren De la Rue. To these Meetings Members 

 and their Friends only are admitted. 



Persons desirous of becoming Members are requested to apply to the 

 Secretary. When proposed, they 'are admitted to all the Lectures, to the 

 Friday Evening Meetings, and to the Library and Reading Rooms ; and 

 their Families are admitted to the Lectures at a reduced charge. Payment : 

 First Year, Ten Guineas ; afterwards. Five Guineas a Year; or a composition 

 of Sixty Guineas. 



UNIVERSITY COLLEGE (LONDON) 

 MEDICAL SOCIETY. 



An ADDRESS on " The Use of Physiology to Medical Students " will 

 be delivered by Dr. MICHAEL FOSTER, M.A , F R S., Prselector in 

 Physiology, and Fellow of Trinity College, Cambridge, in the Botanical 

 'Iheatre of University College, Gower Street, on TUESDAY, December 3, 

 at 8 P.M. Admission (Gentlemen only) by Ticket, to be obtained on appli- 

 cation to the Secretaries of the Society. 



H. M. MURRAY, 1 „ o 

 W. R. PARKER, / "°"- ^"^ 



DUNHEVED COLLEGE (LIMITED), 



LAUNCESTON, CORNWALL. 

 Seven hours from London. Skparatk Bedrooms. Systematic Teaching 

 in Science, Foreign Languages, and Univsrsity Couksks. 

 Calendar post fr«« fi-oix 



Thk Principal— BENJAMIN RALPH, LL.B. Dub. 



LIBRARY OF HARVARD UNIVERSITY, 

 CAMBRIDGE, MASS., U.S.A. 



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

 Libraries (Ai^tronomical Obser\'atory, Botanic Garden, Bussey Institution, 

 Divinity School, Law School, Mustum of Comparativt Zoology, Scientific 

 School), may be sent to the Ajents, Messrs. TxtSNiK & Co., 57 and 5f , 

 Ludgate Hill, Londoa. 



JUSTIN WINSOR, Librarian. 



To LEADING SCIENTIFIC & LITERARY 



MEN. — An old-established Firm, who are extending their Publishing 

 Department, are prepared to undertake the Publication of a few Stan- 

 dard Works in Science and General Literature, upon liberal terms. All 

 communications in reply to this advertisement will be treated as strictly 

 confidential, and should be addressed in the first instance, by letter only, 

 to Dclta, Londcn Institution, Finsbury Circus, E.C. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



THOMAS BOLTON, MICROSCOPIST'S and NATURALIST'S 

 STUDIO, 17, ANN STREET BIRMINGHAM, 

 RAPHIDIOPHRYS PALLIDA, 



The Freshwater Rhixopoda of F. Schulie figured in Archiv far 

 ntikroikop. Anatomies vol. x. Plate xxvi. fig. i. 



Also Hoscules, some fine Afeliceria ringens, and Volvax glolator, &c. 

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



Weekly Announcements will be made in this place of Organisms ready 

 for sale. 



SUNDAY LECTURE SOCIETY.— LEC- 



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

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

 December i, 1878 : — Professor W. A. Hunter, M.A., on "A Sketch 

 of the English Law of Heresy, Past and Present." — Members' Annual 

 Subscription, ;fi. Payment at the Door — One Penny, Sixpence, and 

 (reserved seats) One Shilling. 



ROYAL POLYTECHNIC— CLASSES for 



tkc preparation of Students for University Examinations, under the 

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

 ▼anity Matriculation, I St and 2nd B.Sc, Preliminary Scientific M.B., 

 Botaay, Physiology, Chemistry. All the werk practical. 



EDUCATION. 



REV. W. TUCKWELL, late Head-Master of TAUNTON COLLEGE 

 SCHOOL,?and Fellow of New College, Oxford, takes a FEW YOUNG 

 BOYS as PUPILS.— Address STOCKTON RECTORY, near Rugby. 



BERNERS COLLEGE.— The Laboratory 



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

 evening. ANALYSES performed. Especial arrangements for Gentle- 

 Bien and Ladies preparing for the various Examining Boards. Fees 

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

 Street. W 



^VITHERNDEN SCHOOL, CATERHAM 



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

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



ROWSELL'S CATALOGUE of the BEST 



WORKS on NATURAL HISTORY : Omithologv, Mammalia, Ento- 

 mology, Conchology, Mineralogy, Geology, Reptilia, Crustacea, 

 Botany, and General Zoology, comprising 2,229 Articles containing 

 several thousand Volumes, with Coloured Plates, &c. Inclose 

 stamp to Joel Rowsell, 9, King William Street, London, W.C. — 

 Always on sale, upwards of 100,000 Volumes of Miscellaneous Eo:ks 

 of the best sort. Libraries purchased to any extent for cash. 



The CLAIMS of PSYCHOLOGY to Admis- 



slon into the CIRCLE of the SCIENCES.— The Fifth Sessional 

 Address of the President (Mr. SERJEANT COX) of the Psychological 

 Society cf Great Britain, November 7, 1878, price Sixpence. Sent by 

 post to any person inclosing seven stamps to Mr. Poole, the Secretary 

 at the offices of the Society, 11, Chandos Street, Cavendish Squart 

 and through any bookseller, from Long.mans & Co., Paterncster Row. 



EDGBASTON HIGH SCHOOL FOR 



GIRLS, LIMITED.— Assistant Mistresses will be Required Next 

 Term. Subjects : Classics, History, Natural Science. Salary from loaL 

 to 150/. according to qualifications. 

 Applications, with full particulars, to be sent to the Head Mistress, 2S4, 

 Hagley Road, Birmingham, not later than Wednesday, December 4. 



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



ilr. per dozen. Skeletons, Skulls, &c., of Mammalia; Pond-life, In- 

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

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



ENGRAVINGS AND ELECTROTYPES 



FOR SALE, at prices ranging from \s. to loj., in good condition, ready for 

 printing. Small, medium siie, 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. 



FACSIMILK OF SIGNATURE for 31. An exact copy of any r.arae 

 guaranteed. These signatures being engraved in bold relief, are useful f<r 

 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 opporti n ty 

 is offered of acquiring the ART of DRAWING and ENGRAV1^G 

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

 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, -Vnist and Engraver, 75, Fleet^Stieet, L<ndcn, E. C.^fl 



