Jxvi 



NATURE 



\Ju7ie 26, 1S79 



MICROSCOPIC OBJECTS 



Of superlative perfection, illustrating Histology and eveiy branch of Micro- 

 scopy. Catalogue post free and gratis on application. 



PARIS UNIVERSAL EXHIBITION, 1878. 



Prize Medal awarded for Excellence^ Variety ^ &>c, 

 KDMUND WHEELER, 48N, Tollington Road, Holloway. London, N. 



BRITISH ASSOCIATION FOR THE 

 ADVANCEMENT OF SCIENCE, 



22, ALBEMARLE STREET, W. 



The NEXT ANNUAL GENERAL MEETING will be held at 

 SHEFFIELD, commencing on WEDNESDAY, August 20. 



President-Elect, 



Prof. G. J. ALLMAN, M.D , LL.D., F.R.S.L. and E., M.R.I.A. 



Pres. L.S. 



NOTICE to CONTRIBUTORS of MEMOIRS.—Authors are reminded 

 that, under an arrangement dating from 1871, the acceptance of Memoirs, 

 4nd the days on which they are to be read, are now, as far as possible, de- 

 termined by Organising Committees for the several S^ztmns before the be£in- 

 'ti*t£ 0/ the Meeting. It has therefore become necessary, in order to ^ive 

 an opportunity to the Committees of doing justice to the several communica- 

 tions, that each Author should prepare beforehand an Abstract of his 

 Memoir, of a length suitable for insertion in the published Transactions of 

 the Association, and the Council request that he will send it, together with 

 the original Memoir, by book-post, on or before July 15, addressed thus : — 

 '* General Secretaries, British Association, 22, Albemarle Street, London, 

 W. For Section " Authors who comply with this re- 

 quest, and whose Papers are accepted, will be furnished be/ore the Meeting 

 with printed copies of their Reports or Abstracts. If it should be inconve- 

 nient to the Author that his Paper should be read on any particular days, he 

 is requested to send information thereof to the Secretaries in a separate 

 note. 



No Report, Paper, or Abstract can be inserted in the Report of the Asso- 

 ciation tmless it is in the Assistant-Secretary's hands before the conclusion 

 of the Meeting. 



J. E. H. GORDON, Assistant- Secretary. 



THE YORKSHIRE COLLEGE. 



The Worshipful Company of Clotliworkers cf the City of London, having 

 increased their Endowment of the Textile Industry Department of the Col- 

 lege, so as to mclude Instruction in Dyeing, the Council of the College is 

 prepared to receive Applications for the post of INSTRUCTOR. Stipend, 

 ^£300 a year and half the Fees. Preference will be given to Candidates who 

 are familiar with the processes of French and German Dyemg, and with the 

 methods of Instruction pursued in the Continental Schools. Applications, 

 accompanied by a statement of the Candidate's experience, together with 

 copies of testimonials, to be sent not later than August nth, to the Secretary 

 af the Yorkshire College, from whom further information may be obtained. 



The work of instruction will begin in January, 1880. 



W. F. HUSBAND, Secretary. 



Leeds, June i8th, 1879. 



ST. THOMAS'S HOSPITAL, ALBERT 

 EMBANKMENT, S.E. 



The WINTER SESSION, 1879-80, will commence on OCTOBER 1st. 



TWO ENTRANCE SCIENCE SCHOLARSHIPS of ;^6o and £4,0, 

 OPEN to all First Year's Students, without the condition of their having 

 first entered as Students of the Hospital, will be awarded in the first week of 

 October. Subjects : Chemistry and Physics, with either Botany or Zoology, 

 at option. SPECIAL CLASSES for the PRELIMINARY SCIENTIFIC 

 of University of London, with Practical Work in Laboratories and Museums, 

 are to be held from October to July, and for the ist M.B. from January to 

 July. 



Several Medical Practitioners in the neighbourhood receive Students for 

 residence and supervision, and a register of mspected and approved lodgings 

 is kept in tlie Secretaiy's office. 



Prospectus and all particulars may be obtained from the Secretary, Dr. 

 Gillespie, at the Hospital. 



W. M. ORD, M.D., Dean. 



PHYSICAL SOCIETY.— The REPRINT 



of Sir CHARLES WHEATSTONE*S SCIENTIFIC PAPERS is 

 now being issued to the Members of the Society. Any Member who, 

 having paid his Subscription for the current year, has not yet received 

 a Copy, is requested to communicate with the Treasurer, Dr. Atkin- 

 son, Portesbery Hill, Camberiey, Surrey. 



FOR SALE.— INDIAN ELEPHANT 



SKELETONS, two monsters, nearly twelve feet high, one macerated 

 the other not ; one has tusks valued at Ks. 400 ; to be sold, a bargain. 

 Can be seen at 6, Somerset Villas, Lordship Road, Stoke Newington, 

 London. 



Several Skins of Elliott's Pheasant on hand. 



ASTRONOMICAL TELESCOPE.— 3| O.G., 



several eye-pieccp, finder, rackwork stand, unusually strong, perfect 

 condition. Sale, or exchange for fine Violin. — Polakis, 17. Brecknock 

 . Crescent. N.W. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



THOMAS BOLTON, MICROSCOPIST'S and NATURALIST'S 

 STUDIO. 17, ANN STREET, BIRMINGHAM, 



T. B. has last week posted to his sub5:cribers Asplancktia BHghttveUii 

 and other Rotifers, with drawings. The previous week he sent cut speci- 

 mens of the Glass Larva Corethra phauicornis. He has also distributed 

 Pantto)iua tttormn, Nitella, Chara, AlcyoncUa /mtgosa. Crista teUamucedo^ 

 Frcdericella sultana, Melicerla, Floscularla, Fiydra (with generative 

 organs), &c. 



Weekly announcements will be made in this place of organisms T. B. 

 is supplymg. 



Specimen Tube, One Shilling, post-free, 



Twenty-six Tubes in course 0/ Six Mont lis /or Subscription 0/ £,z 15, 

 Price List of Specimens on application, with stamped addressed envelope. 



TO LET (Furnished) for Three or Four 



Months from July, a pretty, small COUNTRY RESIDENCE, wlih 

 Conservatory, Garden, Croquet Lawn, Coach-hcuse and Stable, three 

 miles from Southampion, stands high on gravel soil, contains three Sit- 

 ting, five Bed-rooms, and all necessarj' accommodation. — Apply to Mrs. 

 A., care of Mr. Wiseman, 15, Above-bar, Southampton. 



MICROSCOPE, A BARGAIN.— Full size 



v^t body. A, B, C eye-pieces, i-inch objective, polariscope, paraboloid. &c. 

 In mahogany case. Five Guineas. — Rev. S. Kincaid, Training College, 

 Carmarthen, 



LIBRARY OF HARVARD UNIVERSITY, 

 CAMBRIDGE, MASS., U.S.A. 



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



Libraries (A-tronomical Obser\'atory, Botanic Garden, Bussey Institution, 

 Divinity School, Law School, Museum of Comparative Zoology, Scie itific 

 School), may be sent to the Agents, Messrs. TrObnkr & Co., 57 anti 55, 

 lAidgat« Hill, London. 



JUSTIN WINSOR, Librariiin. . 



DUNHEVED COLLEGE (LIMITED), 



LAUNCESTON, CORNWALL. 

 Seven hotu^ from London. Separate Bedrooms. Systematic Teaching 

 in SciENCH, Foreign Languages, and University Codrsbs. 

 Calendar post free from 



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



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 and B.Sc, Preliminary Scientific J!.B., 

 Botany, Physiology, Chemistry. All the work practical. 



LABORATORY, 38, GRACECHURCH STREET, LONDON, B.C. 



A. ANTHONY NESBIT, F.C.S., 



WATER ANALYST, 



Performs every description of Water Analyi^is on moderate terms. 



Properly cleansed bottles for the reception of samples sent to any pat of 



the Kingdom. 



THIN GLASS FOR MICROSCOPIC 



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

 21. gd. ; post free 2rf. extra ; Ground edged Slips, 51. per gross ; also 

 other Mounting Materials and Objects prepared for mounting.— CHAS. 

 PETIT, 151, Hish Street. Stoke Newington. N. 



DURING the RECENT GALES a large 



quantity of interesting FOSSILS have been washed out of ihe London 

 Clay Cliffs of bhcppcy. A representative Series of loo Specimens, 

 correctly named, will be sent carriage paid to London on receipt ofios. 

 by W. H. SHRUBSOLE, F.G.S., Sheerness-on-Sea. 



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 Alterations. New Illustrated Descriptive Catalogue, 

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

 Photo. List free.— DALE & CRAMPTON, Manufacturing Opticians, 

 4, Little Britain, London, E.C. 



MINERALOGY. 



COLLECTIONS FOR STUDENTS FROM 4J.-SIN-GLE SPECI- 

 MENS FROM irf.— TABLE OF HARDNliSS, 2r. 6<;— HAMMERS 

 AND CHISELS -A GOOD SERIES OF POLISHED DEVONIAN 

 CORALS AND CONGLOMERATES. 



FINE SIBERIAN MINERALS. 

 PRIVATE LESSONS AND EVENING CtASSES. 

 SAMUEL HENSON, 



277 (.Late Mia), STRAND, W.C, 



