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MACMILLAN & CO.'S BOOKS FOR STUDENTS OF BOTANY, . THE LIFE HISTORY OF BRITISH

OF BRITISH FLOWERING

FLOWERING PLANTS.

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By the Rt. Hon. Lord AVEBURY, P.C., D.C.L., &c. 8vo.

(Serty. Α. TEXT-BOOK OF BOTANY. By Dr. E. STRASBURGER, Dr. FRITZ NOLL, Dr. H. SCHENCK, the late Dr. A. F. W. SCHIMPER. Translated from the German by H. C. PORTER, Ph.D. Revised with the Fifth German Edition by W. H. LANG, M.B., D.Sc.,

Senior Assistant in Botany, University of Glasgow. With 686 Illustrations, in part coloured. Medium 8vo. 185. Det. BOTANY FOR BEGINNERS. By BIOLOGICAL LABORATORY

ERNEST EVANS. 4th Impression. Globe 8vo. 25. 6d. METHODS. By P. H. MELL, Ph. D. Crown 8vo. PRACTICAL BOTANY for

6s. 6d. net.

BEGINNERS. By Prof. F. O. BOWER, Sc.D., F.R.S., and

INTRODUCTION to THE STUDY D. T. GWYNNE-VAUGHAN, M.A. Second Edition. OF SEAWEEDS. By GEORGE MURRAY, F.R.S.E Globe 8vo. 35. 6d.

Illustrated. Crown Svo. 75. 6d. LESSONS in ELEMENTARY TIMBER and some of its DISEASES.

BOTANY. By DANIEL OLIVER, F.R.S. With By H. MARSHALL WARD, D.Sc., F.R.S., F.L.S. numerous Illustrations. Fcap. 8vo. 45. 6d.

With Illustrations. Crown 8vo. 6s. (Nature Series FIRST BOOK OF INDIAN BOTANY. DISEASE IN PLANTS. By

By DANIEL OLIVER, F.R.S. With numerous Illustra. H. MARSHALL WARD, D.Sc. Crown 8vo. 75. 6.

tions. Globe 8vo. 6s. 6d. BOTANY.

TIMBER and TIMBER TREES. An Elementary Text for Schools. By L. H. BAILEY. With numerous Illustra

Native and Foreign. By THOMAS LASLETT, Timber tions. Extra Crown 8vo. 65.

Inspector to the Admiralty. Second Edition. Revised by

Prof. H. MARSHALL WARD, F.R.S. Crown 8vo. Ss. 6. BOTANY. By Sir J. D.

By Sir J. D. HOOKER, THE NATURE AND WORK OF F.R.S. With Illustrations. Pott 8vo.

PLANTS. An Introduction to the Study of Botany. By The STUDENT'S FLORA of the

D. T. MACDOUGAL, Ph. D. Crown Svo. 45. 61. BRITISH ISLANDS. By Sir J. D. HOOKER, F.R.S. Third Edition. Globe 8vo.

LECTURES ON THE EVOLUTIOX Ios. 6d. STRUCTURAL BOTANY:or Organ

OF PLANTS. By Prof. DOUGLAS H. CAMPBELL

Ph.D. Crown 8vo. 45. 6d. net. ography on the Basis of Morphology. To which is added 1 The Principles of Taxonomy and Phytography, and a

FLOWERS, FRUITS, and LEAVES. Glossary of Botanical Terms. By ASA GRAY. 8vo. By LORD AVEBURY. With numerous Illustrations Ios. 6d.

6th Impression. Crown 8vo. 45. 6d. (Nature Series. BOTANICAL TABLES. By A. B. On BRITISH WILD FLOWERS, BUCKLEY. Fcap. 8vo.

considered in Relation to Insects. With numerous Illasın. FIRST LESSONS in PRACTICAL tions. By LORD AVEBURY. Crown 8vo. 45. 62. BOTANY. By G. T. BETTANY, M.A., B.Sc., F.L.S.

(Nature Series Pott 8vo.

FLOWERS AND FERNS in their THE TEACHING BOTANIST. A HAUNTS. By MABEL OSGOOD WRIGHT. IlusManual of Information upon Botanical Teaching, with an

trated. Extra Crown 8vo. ros, 6d, net. outline for a general course. By WILLIAM F. GANONG. Crown 8vo. 55.

THE HERB OF THE FIELD. By A UNIVERSITY TEXT-BOOK OF

CHARLOTTE M. YONGE. Crown 8vo. 35. BOTANY. By Prof. DOUGLAS HOUGHTON CAMP. ! VEGETABLE CULTURE. A Primer

BELL, Ph.D. With many Illustrations. Svo. 175. net. for Amateurs, Cottagers, and Allotment Holders By LABORATORY PRACTICE FOR ALEXANDER DEAN, F.R.H.S. Edited by J. WRIGHT. BEGINNERS IN BOTANY. By W. A. SETCHELL,

With Thirty-eight Illustrations. Pott 8vo. Ph.D. Fcap. 8vo. 45. 6d. net.

A PRIMER of PRACTICAL HORTI. The BOOK of the ROSE. By the late CULTURE. By J. WRIGHT, F.R.H.S. Pott Sra. 11. Rev. A. FOSTER-MELLIAR. Illustrated. Third

GARDEN FLOWERS and PLANTS. Edition. Crown 8vo. 6s. CYCLOPÆDIA OF HORTICUL

A Primer for Amateurs, By J. WRIGHT, F.R.H.S.

With Fifty Illustrations. Poti 8vo.
TURE, By Prof. L. H. BAILEY, assisted by WILHELM
MILLER and many Expert Cultivators and Botanists.

GREENHOUSE AND WINDOW Illustrated with over 2000 Original Engravings. In Four PLANTS. BY CHARLES COLLINS. Edited by I. Vols. Imperial 8vo. Vol. I., A.-E. Vol. II., F.-M., WRIGHT, F.R. H.S. With Thirty-eight Illustrabucs Vol. III., N.-Q., Vol. IV., R.-Z. 215. net each.

Pott Svo. Is. BRITISH FOREST TREES and their THE CHEMISTRY of the GARDEX.

SYLVICULTURAL CHARACTERISTICS and A Primer for Amateurs and Young Gardeners. By HERTREATMENT. By JOHN NISBET, of the Indian BERT H. COUSINS, M.A. With an Introduction et Forest Service. Crown 8vo. 6s. net.

J. WRIGHT, F.R.H.S. Pott 8vo. Is.

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THE NEW COLLECTION OF

Selentifically angels catalogue Megascopic and Microscopic 336 SPECIMENS AND SLIDES OF ROCKS,

MICROLOCICAL LABORATORY AND SCHOOL OF NATURAL SCIENCE.

GRATIS AND POST FREE.

is now prepared. Gentlemen invited to send in their applications without delay, as orly 5000 copies will be issued. Sample Slide of expertly prepared ROCK SECTION, 1/-, post free. Merals, Minerals and Rocks expertly mounted for Microscope,

11- each, frim material supplied. LESSONS IN PRACTICAL LITHOLOGY BY CORRESPONDENCE.

A vacancy for one Geological Studeni, desirous of passing with high distinction in University or Civil Service. Small premium. Pocket-money allowed. Apply:- THE DIRECTOR, MICROLOGICAL LABORATORY,

u ASPENLEA ROAD, HAMMERSMITH, LONDON, W. MINERALS, ROCKS, FOSSILS. A large stock of BRITISH AND FOREIGN MINERALS always on view. CORNISH MINERALS

A SPECIALITY. Special display for Teachers and Students on Saturdays. Open till 7 p.m.

RICHARDS' SHOW ROOMS, 3 Beauchamp Place, Brompton Road, South Kensington,

London, S.W. ALBERT EDWARD JAMRACH

(Late CHARLES JAMRACH),

NATURALIST, 180 ST. GEORGE STREET EAST. Implements of Savage Warfare, Idols, Sacred Masks, Peruvian Pottery,

Netsukis China, Lacquers, Gongs, Sheils, and other Curios.

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according to H. ROSENBUSCH: “Elemente der

Gesteinslehre, 2d ed. 1901." Accompanied by a text-book : “Practical Petrography,” giving a short description of the polarizing microscope and its application, and also of the macroscopical and microscopical features of every specimen of this collec. tion, by Professor Dr. K. Busz of the University of Münster. This collection is intended for the practical use of students, and contains typical representatives of all important types of rocks; it is composed of 277 massive rocks (94 deep-seated rocks, 50 dike rocks, 133 volcanic rocks), 28 sedimentary, and 31 crystalline schists. Out of it two smaller collections of 250 and 165 specimens have been selected. The prices are as follows :Collection 1. 336 Specimens of Rocks 380 Marks. la. 336 Slides

420 II. 250 Specimens of Rocks 270 Ila. 250 Slides

310 III. 165 Specimens of Rocks 170 Illa. 165 Slides ...

205 COLLECTIONS OF MINERALS, FOSSILS, METEORITES,

PURCHASED FOR CASH OR EXCHANCED. The fifth edition of Catalogue No. 4, Petrography, has just been published (210 pages), and will be sent free of charge on application.

Dr. F. KRANTZ, RHENISH MINERAL OFFICE, BONN-ON-RHINE, GERMANY.

ESTABLISHED 1833.

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WATKINS & DONCASTER,

ROCKS, MINERALS, FOSSILS. For Collectors, Students, Technical Schools, Colleges, &c.

COLLECTIONS IN POLISHED DEAL BOXES. 25 Specimens, 5/6 ; 50 do., 10/6; 100 do., 21/- ; 200 do., 42/

20 Coal Measure Rocks and Fossils, 12/6; do., larger, 15/-. Adapted for the Board of Education Examinations in

Geology, Physiography, and Mineralogy. A large stock of Minerals, Rocks, Fossils and Microscopic Objects for

selection. Specimens sont on approval. Cabinets, Geologists' Hammers, Chisels, Card Trays, Glass-capped

Boxes, Models of Crystals, &c., &c.

NEW CATALOGUE POST FREE. THOMAS D. RUSSELL, 78 Newgate St., London, E.C.

Naturalists and Manufacturers of CABINETS AND APPARATUS FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL

BRANCHES OF NATURAL HISTORY. SPECIAL SHOW-ROOM FOR CABINETS. N.B.–For Excellence and Superiority of Cabinets and Apparatus, refer. ences are permitted to distinguished patrons, Museums, Colleges, &c. A LARGE STOCK OF INSECTS, BIRDS' EUGS AND SKINS. SPECIALITY.-Objects for Nature Study, Drawing

Classes, &c. Birds, Mammals, &c., Preserved and Mounted by First-class

Workmen true to Nature. All Books and Publications on Natural History supplied. 36 STRAND, LONDON, W.C.

(Five Doors from Charing Cross.) Our Catalogue (96 pp.) Post free on application.

LIVING SPECIMENS FOR

THE MICROSCOPE.

Volvox, Spirogyra, Desmids, Diatoms, Amaba, Arcella, Actinosphærium, Vorticella, Sientor, Hydra, Flascularia, Stephanoceros, Melicerta, and many other specimens of Pond Life. Price is. per Tube, Post Free. Helix pomatia, Astacus, Ampbioxus, Rana, Anodon, &c., for Dissection purposes.

THOMAS BOLTON,
25 BALSALL HEATH ROAD, BIRMINGHAM.

MICROSCOPICAL PETROGRAPHY,

MARINE BIOLOGICAL ASSOCIATION

OF THE UNITED KINGDOM.

THE LABORATORY, PLYMOUTH. The following animals can always be supplied, either living or preserved by the best methods :

Sycon ; Clava, Obelia, Sertularia ; Actinia, Tealia, Caryophyliia, Alcy. aalum ; Hormiphora (preserved);' Leptoplana; Lineus, Ampbiporus, Nereis, Aphrodite, Arenicola, Lanice, Terebella ; Lepas, Baladas, Gammarus, Ligia Mysis, Nebalia, Carcinus ; Parella, Buccinum, Eledono, Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echinus. Ascidia, Salpa (preserved). Scyllium, Raia, &c., &c.

For prices and more detailed lists apply to
Biological Laboratory, Plymouth.

THE DIRECTOR.

Gentlemen interested in the above study are invited to send to

JAMES R. GREGORY & CO., i Kelso Place, Kensington Court, London, W.,

for a Prospectus of THE TWENTIETH CENTURY ATLAS OF

MICROSCOPICAL PETROGRAPHY, now being issued in Twelve Monthly Parts, each Part containing Four Fine

Hall. Tone Plates, and also Four actual Rock Sections. Subscription in advance, either Monthly, 7/- ; Quarterly, 21/-; or for the whole Series of 12 Monthly Parts & 48 Sections, £44s.

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NOTICE.-Advertisements and business letters for Nature should be addressed to the Publishers; Editorial Communications to the Editor. The telegraphic address of Nature is “ Phusis,” LONDON. SUBSCRIPTIONS TO NATURE."

CHARGES FOR ADVERTISEMENTS. & s. d. | TO ALL PLACES ABROAD:- £ s. d.

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

OFFICE: ST. MARTIN'S STREET, LONDON, WC.

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Price List free on application to
C. E. MÜLLER, ORME & CO., Ltd.,

CONTRACTORS TO H.M. GOVERNMENT,
148 HIGH HOLBORN, LONDON, W.C.

Printed by Richard Clay And Sons, LIMITED, at 7 & 8 Bread Street Hill, Queen Victoria Street, in the City of London, and published by MALLA

AND Co., LIMITED, at St. Martin's Street, London, W.C., and The MACMILLAN COMPANY, 66 Fifth Avenue, New York. - TRURSDAY, Marcus

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A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE

To the solid ground
Of Nature trusts the mind which builds for aye."—WORDSWORTH.

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Containing an original description of the principles and function of the photographic lens. Together with the

latest workshop methods. Then there follows a series of chapters on practical photography and the effect of lenses on results. The chief types are discussed and compared by means of original diagrams. Also an appendix on the Gauss Theory and on a new system of lens testing. The book

is entitled
“ "PHOTOGRAPHIC LENSES:

A SIMPLE TREATISE."
By CONRAD BECK and HERBERT ANDREWS.

POST FREE 1/3
350 Pages, 45 Engravings, 150 Diagrams, Cloth Bound.

EDITION DE LUXE, 3/6 POST FREE.
R. & J. BECK, Ltd., 68 CORNHILL, LONDON.

THE NEW PATTERN COMBINED BARO-THERMOGRAPH. The above instrument combines in one apparatus the Recording Baro. meter and Recording Thermometer, giving thus on one and the same chart continuous records of the atmospheric pressure and temperature for seven days. Illustrated Price Lists of Self-Recording and other Scientific

Instruments Post Free to all parts of the World.

38 HOLBORN VIADUCT, E.C. Branches-45 CORNHILL, and 122 REGENT STREET.

...

sex.

COUNTY OF LONDON. BIRKBECK COLLEGE.
EDUCATION ACTS, 1870 TO 1903.

BREAMS BUILDINGS, CHANCERY LANE, E.C. The London County Council invites applications for the following appointments in the Education Department :

FACULTY OF SCIENCE. FOUR DIVISIONAL INSPECTORS, who will have the general superintendence of large districts and give special attention to the co.

DAY AND EVENING COURSES. ordination of education within their areas. Their chief duties will be to

Chemistry

J. E. MACKENZIE, Ph.D., D.Sc inspect pupil teachers' centres, secondary schools, training colleges, science

H. WE REN, P,D, BA, R.. and commercial centres, polytechnics, and all institutions for higher educa.

ALBERT GRIFFITHS. D.Sc. tion aided by the Council. Candidates will be required to possess special Physics ...

D. OWEN, B.A., B.Sc. qualifications in one of the following subjects :-(1) English language and

B. W. CLACK, B.Sc. literature ; (2) Modern languages; (3) Mathematics and Science ; (4) Tech:

Mathematics nology (including mechanical and electrical engineering). The salary will

| E. H, SMART, M.A.

W. G. BIRT, B.A., B.Sc. be in each case 6600 a year, rising by annual increments of £25 to a

Botany ... maximum salary of £800 a year.

A. B. RENDLE, M.A., D.Sc.

F. E. FRITSCH, Ph.D. ESC ONE ART INSPECTOR, whose chief duties will be to inspect the art Zoology...

H. W. UNTHANK, B.A.B.Sc teaching in elementary and secondary schools, art schools and polytechnics. Geology & Mineralogy Geo. F. Harris, F.G.S. The salary will be 400 a year, rising by annual increments of £20 to a

Assaying, Metallurgy & Mining. Geo. PATCHIX, A.R.S.M. maximum

salary of £500 a year. ONE INSPECTOR of WOOD and METAL WORK, whose chief RESEARCH in Chemistry and Physics in well-equipped laboratories. duties will be to inspect the teaching in wood and metal work in manual training centres and elementary and secondary schools.

French, German, Spanish, Russian, Dutch, & Itallan Classes.

He will also be required to inspect certain classes at polytechnics. The salary will be £400 EVENING CLASSES also in Biology, Physiology, Practical Geometry, a year, rising by annual increments of £20 to a maximum salary of 6500 a Building and Machine Construction, Steam, Theoretical and Applied year.

Mechanics, Land and Quantity Surveying, and Estimating. ONE INSPECTOR of WOMEN'S TECHNICAL CLASSES, whose chief duties will be to inspect technical classes for women (including up

Calendar 6d. (post free 8d.), on application to the SRCEETARY. holstery, flower making, needlework, millinery, dressmaking and dress: cutting) in evening schools, girls' clubs and polytechnics. The salary will be 6300 a year, rising by annual increments of £20 to a maximum salary of SOUTH-WESTERN POLYTECHNIC, £400 a year.

The persons appointed will be under the control of the Chief Inspector, and will be required to give their whole time to the duties of the office, and

MANRESA ROAD, CHELSEA, LONDON, S.W. will in other respects be subject to the usual conditions attaching to the Council's service, particulars of wbich are given in the form of application. Short Courses suitable for the Intermediate and Final B.Sc. ExaminaIn connection with the appointments there is no restriction with regard to

tions of London University will be conducted by Teachers recognised by Applications should be made on the official form to be obtained from the

the University as follows :CLERK of the London County Council at the County Hall, Spring Gardens, S.W., or at the Education Offices, Victoria Embankment, W.C. The

GEOLOGY.-A. J. Maslen, F.L.S. An Excursion (about 5 days, applications must be sent in not later than 10 a.m. on Saturday, April 1, during the Easter vacation) to the Isle of Wight, for the study of the 1905, addressed to the Education Offices as above, and accompanied by Geology of the Island ; also Museum Demonstrations and Field copies of not more than three recent testimonials. Canvassing, either directly or indirectly, will be held to be a disqualifi

Meetings near London during the Summer Term. cation for appointment.

G. L. GOMME,

BOTANY.-T. G. Hill, A.R.C.S., F.L.S. A Summer Course in Clerk of the London County Council. Practical Plant Physiology and Ecology, with suitable Excursions for Spring Gardens, S.W.,

the Study of Plant Relationships, Saturdays, 13 to i comaroing March 2, 1905.

April 8. UNIVERSITY OF BIRMINGHAM.

For particulars, apply to the Head of the Natural Science Department.
faculties.
SOIENCE, ARTS, MEDICINE, COMMERCE. GUY'S HOSPITAL MEDICAL SCHOOL.
SPECIAL SCHOOL OF MODERN LANGUAGES.

(UNIVERSITY OF LONDON.)
DEPARTMENT FOR TRAINING OF TEACHERS.
Scbools of

The SUMMER SESSION will begin on May 1, and Students then ENGINEERING, METALLURGY, MINING, BREWING, bined value of £360 in the following September, as well as for the numerous

entering will be eligible to compete for Entrance Scholarships of the comDENTISTRY,

Medals, Scholarships, and Prizes awarded during the period of Studentbip

The Governors have opened AN ADDITIONAL 50 bens on the Medical Leading to Degrees and Diplomas.

side of the Hospital. ALL COURSES AND DEGREES ARE OPEN TO BOTH MEN AND WOMEN

The numerous Hospital Appointments in both special and general STUDENTS.

departments are open to Students without charge, ind the bolders of In the Medical School there is a separate Dissecting Room for Women

Resident Appointments are provided with board and lodging, with a qualified Woman Demonstrator.

The Dental School provides the full Curriculum required for the LD.S. Graduates of other Universities may, after two years' study or research,

England. take a Master's Degree.

A Handbook of Information for those about to enter the Medical Pro

fession will be forwarded on application. Syllabuses with all information will be sent on application to the For Prospectus of the School, containing full particulars as to Fers, SECRETARY.

Course of Study advised, Regulations for Residents in the College, ec,

apply personally, or by letter to the DEAN, Guy's Hospital, Loodus THE SIR JOHN CASS TECHNICAL Bridge, S.E.

INSTITUTE,
JEWRY STREET, ALDGATE, E.C.

ST. THOMAS'S HOSPITAL, A Course of Twelve Lectures and Demonstrations on

ALBERT EMBANKMENT, S.E. PHYSICAL CHEMISTRY will be given during the Summer Term by

(UNIVERSITY OF LONDON.) G. SENTER, B.Sc., Ph.D.,

The SUMMER SESSION will COMMENCE on APRIL 26 Lecturer on Chemistry at

The Hospital occupies one of the finest sites in London, and contains 6o St. Mary's Hospital Medical School,

Beds, of which 540 are in constant use. The Lectures and Demonstrations will be held on Wednesday Entrance and other Scholarships and Prizes (26 in number), of the valut Evenings, 7-9 p.m., commencing Wednesday, March 29. of more than £500, are offered for competition each year.

The Course is arranged for students of Chemistry and Physics and for Upwards of 60 Resident and other Appointments are open to Students those engaged in Chemical and Electrical industries, who desire to obtain a after qualification. knowledge of the modern developments of Physical Chemistry.

A Students' Club forms part of the Medical School Buildings, and the It will also be adapted to the requirements of candidates for the final Athletic Ground, nine acres in extent, situated at Chiswick, can be reached B.Sc. examination of London University.

in forty minutes from the Hospital. A Course of Laboratory Work in connection with the lectures will A Prospectus, containing full particulars, may be obtained from the be held on Wednesday afternoons.

undersigned. A detailed Syllabus may be had upon application at the Office of the

J. H. FISHER, B.S. Lond., Dean Institute or by letter to the PRINCIPAL. W. H. DAVISON, M.A., Clerk to the Governing Body.

For other Scholastic Advertisements, see page clusxiv.

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