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SEPTEMBER MATRICULATION.

NORTHERN POLYTECHNIC

INSTITUTE,

HOLLOWAY, LONDON, N. Day and Evening Classes for the September Matriculation

(Close to Holloway Stn., G.N.R., and Highbury Sin., N.L.R.) of Lon-lon University may be taken up at any time, as the

LONDON UNIVERSITY SCIENCE AND ENGINEERING Classes at

DEGREES.
Day and Evening Courses in the above under recognised teachers in-
MATHEMATICS,

PHYSICS, work continuously through the Summer vacation. Filly-two

CHEMISTRY, successes at January Matriculation.

ENGINEERING.

Separate Laboratories for Elementary, Advanced and Honours students, Classes in PRACTICAL CHEMISTRY, PHYSICS, exceptionally large and well equipped. BIOLOGY AND GEOLOGY are held during August.

RESEARCH. Prospectus may be had, post free, from the VICE-PRINCIPAL, Special arrangements for students undertaking research during vacations

Full particulars at the Institute or sent on receipt of postcard. University Tutorial College, Red Lion Square, Holborn.

REG. S. CLAY, D.Sc., Principal.

UNIVERSITY TUTORIAL COLLEGE

TUITION BY CORRESPONDENCE

REQUIRED, EXPERT OPINIONS, solely in the interests of Science, upon a treatise on the Constitution and Structure of Atoms, which claims, among other deductions, to have established the following new Chemical Law :-" The acidicity or non-metallic

ature of an element is always due to a pair or pairs of electro-positive forces, each pair emanating from a portion of the element, of which the mass is 4, taking the mass of an atom of Hydrogen as unity.”

A definite constitution and structure is given for each of the recognised chemical elements, except some of the rarest.

The deductions have been obtained by pure reasoning upon observed facts, and await experimental confirmation.

The latest expert opinions are as follow :-
(1) A new field of research is undoubtedly opened.

(2) You are the first, I believe, to have given us what I consider the most tangible base lines upon which one may hope to fathom the causation or matter as we know it.

(3) There is truth on the face of it.
Address "S. N. I.," NATURE Office, St. Martin's Street, London, W.C.

by an especial unique method for all Examinations in BIOLOGY, BOTANY, CHEMISTRY, GEOLOGY, HUMAN PAYSIOLOGY, HYGIENE, MATERIA MEDICA, PSYCHOLOGY and ZOOLOGI.

Writing reduced to a minimum. Work directed. Test Papers corrected and returned.

Address Mr. FREDERICK DAVIS,

IMPERIAL COLLEGE, 49 and 51 IMPERIAL BUILDINGS, LUDGATE CIRCUS, E.C.

BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W. The Council offer TWO RESEARCH SCHOLARSHIPS, each of the value of 650, one in Physiology, one in Zoology, for the Session 1957 only. Applications should be sent by June 2010 the PRINCIPAL, sro whom further information can be obtained.

UNIVERSITY OF MANCHESTER

AND
MANCHESTER ROYAL INFIRMARY.

ENTRANCE MEDICAL SCHOLARSHIPS.
TWO SCHOLARSHIPS are offered, one for proficiency in Arts, and
one for proficiency in Science. Each Scholarship is of the value of £100,
and the successful candidates will be required to enter for the full medical
curriculum in the University and the Infirmary.

The Scholarships will be awarded to candidates who give evidence of a high standard of proficiency in Arts or Science respectively.

Applications should be sent on or before July 1 to the REGISTRAR, from whom further particulars may be obtained.

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UNIVERSITY OF MANCHESTER. A PLATT BIOLOGICAL SCHOLARSHIP of the value of £50 is offered for award. The Scholarship is open to persons who have studied Zoology or Botany in any University or College Laboratory, and the successful candidate will be required to devote himself to research in the Zoological or Botanical Laboratory of the University during the tenure of the Scholarship

Applications should be sent on or before July 7 to the Registrar, from whom further particulars may be obtained.

GUY'S HOSPITAL. ENTRANCE SCHOLARSHIPS, to be competed for in September, 1906.

TWO OPEN SCHOLARSHIPS in ARTS, one of the value of £100, open to Candidates under 20 years of age, and one of £50, open to Candi: dates under 25 years of age.

TWO OPEN SCHOLARSHIPS in SCIENCE, one of the value of £150, and another of £60, open to Candidates under 25 years of age.

ONE OPEN SCHOLARSHIP for University Students who have completed their Study of Anatomy and Physiology, of the value of £50.

Full particulars may be obtained on application to the DEAN, Guy's Hospital, London Bridge, S. E.

BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W. The Council are about to nppoint an ASSISTANT in MATHEMATICS salary 6100, and a JUNIOR DEMONSTRATOR in PHYSICS, Salary £75, for the Session 1906-7. Applications, from women only, with testi monials, to be sent by June 20 to the PRINCIPAL, from wbom particulars can be obtained,

ROYAL STATISTICAL SOCIETY.
A paper on "The Generalised Law of Error, or Law of Great Numbers,"
by Professor F. Y. EDGEWORTH, M.A., D.C.L., will be read before the
Royal Statistical Society, y Adelphi Terrace, un Tuesday, June 19, at

BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W.
The Council are about to appoint a DEMONSTRATOR in CHEMIS.
TRY. Applications, with a stimonials, to be sent in by June zo to the
SFCRETARY, from whom particulars can be obtained.

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EGYPTIAN GOVERNMENT.

MINISTRY OF EDUCATION. he following post at the School of Medicine, Cairo, is vacant :

ASSISTANT TO THE PROFESSOR OF CHEMISTRY. The appaintinent is for two years, and may be renewed at the end of that time. Applicants should forward copies of testimonials and such other particular as are mentioned below.

The ray of the post is £E. 320 per annum, the Egyptian Pound being wurth more than the Pound Sterling.

Private Practice is not allowed.

It is to be distinctly understood that the appointment gives no claim to pen-lou or indemnity

The Government reserves to itself ibe right to disiniss the assistant for DataCon lust or incapacity.

In the Government Schools, as in all State Administrations in Egypt, Sunday is a working day. The Schools are closed on Fridays.

leave will be granted on the same terms as to other Government Officials. The pressitality of taking leave, and the period of the year at which it is grand, depend upon the exigencies of the service

Pay conuience from date of arrival in Cairo. On taking up his duties in Cairs, the Assistant will receive one month's pay in lieu of passage money,

All applicants should attach a certificate from a legally qualitied medical tan, stating that in his opinion the candidate would pass as a first-class life for insuranc purpu.es. All applicants should state :

Their training and qualifications in Analytical Chemistry,
What foreign languages they know, and

If they can be in Cairo by October 1.
The latest mail by which applications may be posted will leave London
00 Friday, August 31. Applications 10 be addressed :—THE DIRECTOR,
Guretanient School of Medicine, Cairo, Egypt.

THE MINIATURE SPECTROSCOPE. This Instrument will show many of the Fraunhofer lines, the bright lines of the metals and gases, and the absorption bands in coloured gases, crystals or liquids. Price, with Plain Slit

£1 2s. Od. Adjustable Slit, &c., in Morocco Case £1 14s. Od. Achromatic Lens, &c., in Morocco Case... £2 Os. Od.

and Comparison Prism, in 'Morocco Case

£2 7s. 6d. ** HOW TO WORK WITH THE SPECTROSCOPE." By JOHN BROWNING, F.R.A.S., F.R. M.S., &c. With 20 Illustrations.

7d. post free.

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COUNTY BOROUGH OF CROYDON

EDUCATION COMMITTEE. The Committee invite applications for the appointment of FORM NASTER I the Secondary School for Boys, Central Polytechnic, Croydon.

Salary, 150 per annum, rising by annual increinents of £10 to a maximum of per anisum.

Tbc salary will be subject to an annual percentage deduction in accordance with the provisions of the Superannuation Scheme adopted by the Council under the powers of the Croydon Corporation Act, 1893,

Applications, staring age, experience and full particulars of qualifications, tuwether with copies of testimonials, must reach the undersigned not later than Saturday, July 7, 1906.

JAMES SMYTH, Clerk. Eduation Office, Katharine Street, Croydon,

June 11, 1906.

RAINBAND SPECTROSCOPE (Grace's). Mr. JOHN BROWNING begs to draw attention to the advantages of this very powerful, portable, and efficient Instrument, which is specially adapted for predicting coming rain. It is provided with a rack motion focussing arrangement, and it is applicable to every purpose for which a Direct Vision Spectroscope can be used. Price, in Morocco Leather Case

£3 8s. 6d. For use with the above" HOW TO FORETELL THE WEATHER WITH THE

POCKET SPECTROSCOPE." By F. W. Cory, F.R.M.S., M.R.C.S., &c. With 10 Illustrations.

In paper cover, 1s. 2d. ; in cloth, 1s. 8d. post free. STUDENTS' SPECTROSCOPES, £7, £8 16s., and £15. Illustrated Catalogues of Spectroscopes or Telescopes post free.

Man'fg.

JOHN BROWNING, Omeleten78 STRAND, LONDON.

ESTABLISHED 1765.

INDIAN AGRICULTURAL

DEPARTMENT. The Seu retary of State for India in Council invites applications for TWELT. APPOINTMENTS in the INDIAN AGRICULTURAL DEPARTMENT, for which five all-round Agriculturists, ibree Agricultural Botanists, and four Agricultural Chemists are required. Candidates should possess a University Honours Degree, or recognised diploma in ayru ulture, agricultural bulany, or agricultural chemistry, as the case may be, and should not be under 23 or over 30 years of age. Applications should he received before the end of June. Further particulars and application forms may be had from the SECRETARY, Revenue Department, India Omce, S.W.

lola Office, London,

June 1, 1906.

BOROUGH OF HASLINGDEN.

MUNICIPAL SECONDARY SCHOOL. WANTED for the above Mixed School, SENIOR MISTRESS, especially qualified in French. Commencing salary, £120, rising by biennial increments of £10 to £160 per annum, with further non-automatic increments upon special recommendation.

Additional remuneration will be given for Evening School duties. Candidates must be Graduates. Duties to commence September next.

Applications, endorsed "Senior Mistress," stating age, qualifications and experience, together with copies only of bree recent testimonials, to be sent to the undersigned not later than Saturday the 23rd instant.

WALTER MUSGROVE, Municipal Offices, Haslingden,

Town Clerk June 12, 1906. ST. BARTHOLOMEW'S HOSPITAL

AND COLLEGE.

DEMONSTRATOR OF CHEMISTRY. Applications are invited for the post of DEMONSTRATOR of CHEMISTRY. Salary, 6150.

Particulars can be obtained from the undersigned, to whom six copies of application and three testimonials should be sent not later than June 30 next. June 7, 1906.

T. W. SHORE, Dean.

COUNTY BOROUGH OF WEST HAM.

MUNICIPAL TECHNICAL INSTITUTE. The Council invite applications for the appointment of a DEMONSTRATOR in the PHYSICS LABORATORY, who will be required also to take certain classes in Mathematics. Salary, 6120 per annum.

Particulars of duties, &c., can be obtained on sending a fully addressed foolsap envelope to the PRINCIPAL, Municipal Technical Institute, Romford Road, West Ham, E.

All applications must be lodged with the PRINCIPAL, before noon, June 2t 1946),

By order of the Council, June 9, 1906.

FRED. E, HILLEARY, Town Clerk.

ST. BARTHOLOMEW'S HOSPITAL

AND COLLEGE.

COUNTY BOROUGH of TYNEMOUTH

EDUCATION COMMITTEE.

MUNICIPAL SECONDARY SCHOOL. WANTED in September next, an ASSISTANT MASTER specially qualified in Mathematics and German English a recommendation.

Must te in graduate with two or more years' experience in a good Secondary School. Salary, 4150, rising by £10 annually to $200. Apply not later than July 7 to

E. B. SHARPLEY. Education Ofhues,

DEMONSTRATOR OF PHYSICS. Applications are invited for the post of DEMONSTRATOR of PHYSICS. Salary, £150 per annum.

Further particulars can be obtained from the undersigned, to whom six copies of application and testimonials should be sent not later than June 30 June 7, 1906.

T. W. SHORE, Dean.

next.

WOOLWICH POLYTECHNIC. The Governors of the Woolwich Polytechnic invite applications for the following appointments :

1. LECTURER in CHEMISTRY. Cominencing salary, £180 per annum.

2. LECTURER in PURE and APPLIED MATHEMATICS. Commencing salary, £180 per annum.

Further particulars may be obtained from the PRINCIPAL (on receipt of a stamped and addressed envelope), to whom applications should be forwarded

THE GLASGOW AND WEST OF
SCOTLAND TECHNICAL COLLEGE.

DEPARTMENT OF NATURAL PHILOSOPHY.
The Governors invite applications for the PROFESSORSHIP of
NATURAL PHILOSOPHY in this College, vacant by the death of
Professor James Blyth, M.A., LL.D. Salary, £500.

Applications, with testimonials, must be sent not later than July 14 to the SECRETARY, Technical College, Glasgow, from whom further information may be obtained.

TO LIBRARIANS OF UNIVERSITIES AND

TECHNICAL INSTITUTES.
EARLY LITERATURE of MAGNETISM

AND ELECTRICITY.
The following rare works, duplicates from the Library of Pro-
fessor Silvanus P. Thompson, are offered for sale. The Collection
is offered en bloc; but, if not disposed of before September,
offers for individual books will be entertained. For full descriptive
Ilst apply to Professor Silvanus P. Thompson, Technical College,
Finsbury, Leonard Street, London, E.C.

Barlowe, Navigators' Supply, 1597 ; Barlowe, Magneticall Advertisements, 1616; Barlıve, A Breife Discovery, 1618; Bartoli, Del Modo di Misurare, 1546; Brugmans, Verwandtschaften des Magnets, 1781 ; Cabens, Philosophia Magnetica, 1629; Galileo, de Systemate Mundi, 1635 ; Garria ab liorio, Aromatum, 1574 ; Geuns, Sur les Aimans, Venlo, 1768 ; Gilbert, De Magnete, 1600 (first folio edition); Giltert, De Mundo Nostro, 165! ; (yralius, De Re Nautica, 1540 ; Klaproth, Lettre sur l'Invention de la Boussole, 1834 ; Kircher, Magnes sive de Arte Magnetica, 1643 ; Vormar, Newe Attractive, 1596; Ridley, Magneticall Bodies and Motions, 1613; Taisnier, De Natura Magnetis, 1562 ; Theophrastus, History of Stones, 1746.

Price of the Collection, £80 nett.

NORTHERN POLYTECHNIC

INSTITUTE,

HOLLOWAY, LONDON, N. The Governors of the above Institute invite applications for the following appointments :

ASSISTANT in ENGINEERING DEPARTMENT. Full time. Salary, 6150 per annum.

ASSISTANT in SECONDARY DAY SCHOOL (Boys and Girls).
Salary, £150 per annum. Full time.

TEACHER of HOUSEWIFERY. Full time.
TEACHER of GEOLOGY (one evening per week).

Applications to be made on special forms, which must be returned not later than June 27, to be obtained from

W. M. MACBETH,

Clerk to the Governors.

LIQUID AIR AND LIQUID HYDROGEN

BATTERSEA POLYTECHNIC,

LONDON, S.W.
The Governing Body require the services of the following from September
LECTURER in PAPER MAKING for Evening Classes.
For particulars send stamped addressed envelope to the SECRETARY.

Dr. HAMPSON'S AIR-LIQUEFIER is now made to a standard paltern, and numbers are in use in University Laboratories and elsewhere is various countries. The whole apparatus is neat and compact and its parts very easily moved ; the Liquefier, without stand, being a cylinder 17 inches bigh and 8 inches in diameter.

It begins to liquefy air in from 6 to 10 minutes after the admission of air at from 150 to 200 atmospberes pressure, making over a litre of liquid per hour.

It requires no auxiliary refrigerant and produces a perfectly clear liquid which requires no filtering.

The operator has only one gauge to watch and one valve to control.

HYDROGEN LIQUEFIER to the designs of Dr. MORRIS W. TRAVERS for use in conjunction with Air-Liquefier.

next :

HIGH SCHOOL, MAIDENHEAD. WANTED in September, FORM MISTRESS. Subjects : Physio. graphy (Elementary Physics and Chemistry) for Pupil Teachers. Degree or equivalent essential. Apply to the HEADMISTRESS.

For Prices and Particulars apply to the Sole Makers :BRIN'S OXYGEN COMPANY,LIMITED,

ELVERTON STREET, WESTMINSTER, S.W.

COURSE OF INSTRUCTION ON OCEAN RESEARCH.

THE "HE courses will consist partly of lectures, partly of practical instruction and assistance in laboratory work ; excursions will

also be made, during which the use of various appliances and instruments will be practically demonstrated. All pupils must, however, bring microscopes and magnifying glasses.

Each student is charged a see of about four guineas (Kr. 75.00). Special pupils who desire to continue their studies after the conclusion of the regular course are permitted to do so, and are not required to pay any additional fee. The lectures are so arranged that it is possible for all the students, if they so wish, to attend them all.

The course will be conducted according to the following plan : I. Dr. A. APPELLOF:(1) Systematic examination of representative forms of the fish and invertebrate animals in the fiords, the North Sea and

the Norwegian Sea. Demonstration of the most important species and guidance as to classifying them. (2) A review of the distribution of the bottom fauna in the same districts, and its dependence upon the configuration

of the bottom and upon hydrographical conditions. (3) Excursions in the adjacent fiords, for the purpose of studying the invertebrate fauna. Opportunities will also be

given for morphological study (dissections, &c.) of various types of invertebrates. II. Dr. D. DAMAS :

(1) Animal plankton :-Systematic examination ; special attention paid to fish-eggs and young fish.

(2) Ordinary plankton biology. III. B. HELLAND-HANSEN:

(1) Instruction, combined with laboratory practice, on the methods of oceanographic investigations.
(2) Review of the results of oceinographic researches of the North-European waters.

(3) Lectures on theoretical oceanography, including hydrodynamical calculations of ocean currents. IV. E. JØRGENSEN :

The plankton algae (diatoms and peridineæ) systematised. V. Docent C. F. KOLDERUP :

(1) Ocean bottom deposits.

(2) Glacial and post-glacial deposits in Norway:

All wishing to attend the above curse should apply to The OCEANOGRAPHICAL INSTITUTE OF Bergen MUSEUM, Bergen, Norway, before July 1, 1905. Information as to lodging, &c., will be furnished if desired. NOTE.- Please state clearly in your application to what extent you wish to take part in the course of instruction, and give the

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W. WILSON,

The Governors of the Royal Veterinary Col.

lege, Camden Town, desire to obtain the services of a PROFESSOR of BIOLOGY and also of a LECTURER on PHYSICS. Particulars can be obtained from the SECRETARY OF THE COLLEGE, to whom all

3 applications for these appointments should be addressed as above, not later than June 28.

Maker of

SPECTROSCOPES, SPECTROMETERS, TO SCIENCE AND MATHEMATICAL MASTERS.- Immediate and September Vacancies.-Graduates and

GONIOMETERS, other seeking posts in should apply at once, giving full details as to qualifications, &c. OPTICAL BENCHES,OPTICAL AND OTHER to , SMITH, & (Estd. 1333). 34 Bedford Street, Strand, London. Immediate notice

MEASURING INSTRUMENTS. of all the best vacancies will be sent.

BEST WORK. MODERATE PRICES. Experienced Coach desires a few pupils in Geology.-Address, "GeoLoGIST," 8 Fernhurst Road, Fulham, S.W.

Price List Free. HERBARIUM.-Recently formed collection

of British Plants wanted; well mounted in standard sheets, size about 18* X 12". Localities must be given.-Full particulars and price to * No. K:18," Keilh's Advertising Agency, 59 George Street, Edin.

burgh. Linnean Society Publications for Sale, good

condition : in part unbound. What offers? Whole or part. Trans. SECOND-HAND INSTRUMENTS, Botany, 1.-VI., Trans. Zoology, 1.-1X.; Jour. Bot., XVII.-XXXVI.; Jour. Zool., XIV.-XXIX.-"). A. T.," Št. Jobn's, Oxford.

Consisting of 36 Pages of articles by the best makers in the

VARIOUS BRANCHES OF SCIENCE.

Post Free to Readers of “NATURE." TYPE-WRITING UNDERTAKEN BY

C. BAKER, 244 HIGH HOLBORN, LONDON. HIGHLY EDUCATED WOMEN ACCUSTOMED TO SCIEN. TIFIC MSS. (Classical Tripos, Intermediate Arts, Cambridge Higher Local, thorough acquaintance with Modern Languages). Research, Revision, Translation. Scale of charges on application. The Cam.

THE IRISH NATURALIST. bridge Type-writing Agency, 10 Duke Street, Adelphi, W.C.

A Monthly Magazine of Irish Zoology, Botany, and

Geology. Price 6d.
TORWAY. - S.Y. - MIDNIGHT SUN."
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Edited by GEO. H. CARPENTER, B.Sc., and R. LLOYD
Berths in the ship. Finest yachting steamer

PRAEGER, B.A. 12 12/- and 30: July 14 and 28 ; August 11 and 25. . Compare Sailing June 16

Annual Subscription, 5s. Post Free to any Address.

Dublin : EASON & SON, LTD., 40 Lower Sackville Street Apply ALBION S.S. CO., LTD.,

(to which Address Subscriptions should be sent Newcastle-on-Tyne. London : SIMPKIN,MARSHALL, HAMILTON, KENT & CO., Lid.

1 Belmont Street, Chalk Farm, London, N.W. CLASSIFIED LIST OF

NORWAY.

W. G. PYE & CO.,

&

SCIENTIFIC INSTRUMENT MANUFACTURERS,

GRANTA WORKS, CAMBRIDGE. SUBSTANTIAL, RELIABLE LABORATORY APPARATUS AT REASONABLE PRICES.

ILLUSTRATED LIST on application.

SCIENTIFIC WORTHIES

The following is a list of the Steel Portraits that have appeared in the above Series :MICHAEL FARADAY.

SIR JOSEPH DALTON HOOKER. DMITRI IVANOWITSH MEN
THOMAS HENRY HUXLEY.
WILLIAM HARVEY.

DELÉEF.
CHARLES DARWIN.
SIR GEORGE B. AIRY.

LOUIS PASTEUR.
JOHN TYNDALL.

J. LOUIS R. AGASSIZ.
SIR GEORGE GABRIEL STOKES. JEAN BAPTISTE ANDRÉ DUMAS.
SIR CHARLES LYELL.
SIR RICHARD OWEN.

SIR ARCHIBALD GEIKIE.
SIR CHARLES WHEATSTONE. JAMES CLERK MAXWELL.

LORD LISTER.
SIR WYVILLE THOMSON.
JAMES PRESCOTT JOULE.

STANISLAO CANNIZZARO. ROBERT WILHELM BUNSEN. WILLIAM SPOTTISWOODE.

PROF. VON KOLLIKER.
LORD KELVIN.
ARTHUR CAYLEY.

PROF. SIMON NEWCOMB.
BARON ADOLF ERIK NOR SIR C. W. SIEMENS.

SIR WILLIAM HUGGINS.
DENSKJOLD.
JOHN COUCH ADAMS.

LORD RAYLEIGH.
HERMANN L. F. HELMHOLTZ. JAMES JOSEPH SYLVESTER. EDUARD SUESS.
N.B.-The Portraits of Sir A. Geikie, Lord _Lister, Prof. Cannizzaro, Prof. von Kölliker,

Prof. S. Newcomb, Sir W. Huggins, Lord Rayleigh and Prof. Suess belong to a New Series

and are Photogravures. Prool impressions of these, printed on India paper, may be had from the Publishers, price 5s. each ; or the series of 35 Portraits in a Handsome Portfolio for £9, carriage paid. The Portfolio may be had separately, price 6s.

Cheques and Money Orders payable to MACMILLAN & CO., Limited. .

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MACMILLAN & CO.'S BOOKS FOR STUDENTS OF ZOOLOGY, A HANDBOOK OF BRITISH INLAND BIRDS. Wica Coloured and buitine THE CAMBRIDGE NATURAL HISTORY.

By ANTHONY COLLETT.
With

Plates of Eggs by ERIC PARKER. Crown 8vo. 6s.

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*

EDITED BY S. F. HARMER, Sc.D., F.R.S., AND A. E. SHIPLEY, M.A., F.R.S.

TO BE COMPLETED IN TEN VOLUMES, 8vo. PRICE 175. NET EACH.
WORMS, LEECHES, &c.

INSECTS. PART II.
VOLUME II.

VOLUME VI.

Hymenoptera continued (Tubulifera and Aculeata), Coleop. Flatworms. By F. W. GAMBLÉ, M.Sc. Nemertines. By tera, Strepsiptera, Lepidoptera, Diptera, Aphanip

Miss L. SHELDON. Threadworms, &c. By A E. tera, Thysanoptera, Hemiptera, Anoplura. By SHIPLEY, M.A., F.R.S. Rotifers. By MARCUS HARTOG,

David SHARP, M.A., F.R.S. M. A. Polychaet Worms. By W. BLAXLAND BENHAM,

FISHES, &Co. D.Sc. Earthworms and Leeches. By F. E. Bed.

VOLUME VII.

Fishes (exclusive of the Systematic Account of Teleostei). By DARD, M.A., F.R.S. Gephyrea, &c. By A. E.

T. W. BRIDGE, Sc.D., F.R.S. Fishes (Systematic SHIPLEY, M.A., F.R.S. Polyzoa. By S. F. HARMER,

Account of Teleostei). By G. A. BOULENGER, F.R.S. Sc.D., F.R.S.

Hemichordata. By S. F. HARMBR, Sc.D., F.R.S. SHELLS.

Ascidians and Amphioxus. By W. A. HERDMAN,

D.Sc., F.R.S.
VOLUME III.

AMPHIBIA

REPTILES. Molluscs and Brachiopods. By the Rev. A. H. Cooke,

VOLUME VIII. A. E. SHIPLEY, M.A., F.R.S., and F. R. C. REED, M.A.

By HANS GADOW, M.A., F.R.S.

BIRDS.

VOLUME IX. INSECTS & CENTIPEDES.

By A. H. Evans, M.A. With numerous Illustrations by G. E. VOLUME V.

LODGE. Peripatus. By Adam SedgWICK, M.A., F.R.S. Myria.

MAMMALIA.

VOLUME X. pods. By F. G. SINCLAIR, M.A.

Insects.

Part I. By FRANK EverS BEDDARD, M.A. Oxon., F.R.S., ViceBy David SHARP, M.A., F.R.S.

Secretary and Prosector of the Zoological Societyol London, *.* Volume I., dealing with PROTOZOA (including Sea Anemones, Jelly Fish, Star Fish, &c.), will be ready shoruy, and Volume IV., dealing with SPIDERS, SCORPIONS, and CRUSTACEA, is in the Press. A YEAR WITH THE BIRDS. By A TEXT-BOOK of COMPARATIVE W. WARDE FOWLER. Crown 8vo. 35. 6d. Prize!

ANATOMY. By Dr. ARNOLD LANG. With Preface by Edition. Globe 8vo. 25. 6d.

Dr. Ernst HaeckEL. Translated by H. M. and M. BER. AN INTRODUCTION TO NATURE : NARD. Vols. I. and I. (completing the Invertebrates). STUDY. By E. STENHOUSE, B.Sc. Globe 8vo.

8vo. 175. net. each.

ELEMENTS of the COMPARATIVE ELEMENTARY PRACTICAL

ANATOMY OF VERTEBRATES. Adapted from the ZOOLOGY. By Professor T. J. PARKER, D.Sc., German of Professor WIEDERSHEIM. By Professor F.R.S., and Professor W. NEWTON PARKER, Ph.D. W. NEWTON PARKER. 270 Woodcuts. Medium 8vo. With 156 Illustrations. Crown 8vo. Ios. 6d.

Second Edition. 125, 6d. net. A MANUAL OF ZOOLOGY. By

THE STRUCTURE of MAN: An IN. Prof. T. J. PARKER, D.Sc., F.R.S, and Prof.

DEX to his PAST HISTORY. W. A. HASWELL, M.A., D.Sc., F.R.S.

By Professor WIED. Illustrations. Crown 8vo.

ERSHEIM Translated by H. M. BERNARD and Ios. 68.

Professor G. B. HOWES, F. R.S. With 105 Figures in A TEXT-BOOK OF ZOOLOGY. By the Text. 8vo. 8s. net.

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