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INTERESTING

MICROSCOPIC OBJECTS.

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Group of Eggs of various Butterflies and Moths. Very
beautiful. 5s. 6d. Extra Large Groups
Dodder on Clover. Transverse Section of Host. Longi-
tudinal Section of Dodder ...

Larva of Firefly, showing Illuminating Organs

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Echinococcus from Brain of Sheep (Canurus cerebralis),
causing staggers

l'olvox globator...

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SUITABLE FOR CHRISTMAS PRESENTS, &c. EDUCATIONAL TELESCOPE, with 3-inch Object-glass, £. mounted on pillar and claw table stand, with universal movements. Fitted with two Eyepieces (1 astronomical and I terrestrial). The whole of first-rate quality, £5 10s.; or, fitted in Pine Case, complete 6POCKET BINOCULAR GLASS, size 2 X 4 X 1 in. Has 12 Len-es, giving most brilliant definition. Covered in either Crocodile, Lizard, or Russia, with Sunshades. Equally efficient for either Field or Theatre use. In Case complete MAGNETIC COMPASS. In bronzed brass Hunter Case, with pin to lift needle off centre when not in use. As supplied by WATSON & SONS to H. M. Government for Army use. Strong and reliable TRAVELLER'S SET. Consisting of best Watch Aneroid, with Type-slide of 50 Foraminifera, mounted opaque, with Singer's pearl Dial Compass to match, and ivory Scale Thermometer, the name photographed under each specie fitted in snap Morocco Case. Complete Classified List, representing a Stock of 40,000 Highest-class Microscopic Objects. Full Illustrated Catalogue of Microscopes and Apparatus sent Post free on application to W. WATSON & SONS, OPTICIANS TO HER MAJESTY'S GOVERNMENT, 313 HIGH HOLBORN, LONDON, W.C

Very pretty group of about 100 Sponge Spicules from St.
Peter, Hungary

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Lung of Sheffield Saw-grinder

Section through Edible Mushroom

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60 Prize Medals Awarded to the Firm. BE CAREFUL TO ASK FOR FRY'S PURE CONCENTRATED COCOA.

"OPTIMUS" MAGIC LANTERNS

Adapted for use with limelight. For dissolving, two lanterns are necessary

EACH Lantern is efficient for exhibitions.

The Lens gives crisp definition, being a
superior Achromatic Photographic Combi-
nation, with Rack and Pinion. Compound
Condenser of 4-in. diameter, 3-wick Refulgent
Lamp.
Complete in box

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Printed by RICHARD CLAY AND SONS, LIMITED, at 7 and 8 Bread Street Hill, Queen Victoria Street, in the City of London, and Pablistal
MACMILLAN AND Co., at 29 Bedford Street, London. W.C., and 112 Fourth New Avenue, York.-THURSDAY, December 22, 18

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NEW CATALOGUE OF

ANTERNS

AND SLIDES.

JUST PUBLISHED, 6d. POST FREE,

ontains NEW SETS OF LANTERN SLIDES on

HISTOLOGY (Photo-micrographs.).

ASTRONOMY. ("Knowledge" Series.)

AGRICULTURAL BANY. (Photo micrographs.)
LIFE HIS ORY OF WHEAT. (Paoto-micrographs.)
INJURIOUS INSECTS. (By Miss ORMER D.)

BEES AND BEE CULTURE. (By 1. W. COWAN, Esq.)
TRIP ROUND THE WORLD (By HOWARD FAR AEK, Esq.)
LIFE AND WORKS OF LORD TENNYSON. (88 Slides.)
SCENES FROM SHAKESPEARE. (101 Slides.) &c., &c.
Contains, also, particulars of the most recent
ENTIFIC LANTERNS,

PROJECTING MICROSCOPES,

PROJECTING POLARISCOPES,

&c., &c.

NEWTON

& CO.,

(RY SPECIAL APPOINTMENT TO THE ROYAL INSTITUTION)

LEET STREET, LONDON.

NOW READY.-1s., Post Free.

16 RED LION STREET, CLERKENWELL, LONDON, E.C.

OUR NEW CATALOGUE

OF

ELECTRICAL TESTING

AND

SCIENTIFIC INSTRUMENTS

IS NOW READY.

Forwarded on Application.

NALDFR BROS. & Co.
NEGRETTI AND ZAMBRA'S
NEW YEAR'S PRESENTS.

FFIN'S ILLUSTRATED CATALOGUE OPERA, RACE, & FIELD GLASSES

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OF EVERY DESCRIPTION.

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Barometers, Microscopes, Telescopes,
Magic Lanterns, &c., &c.

Illustrated Price Lists posted free to all parts of the World.

NEGRETTI & ZAMBRA,

OPTICIANS AND SCIENTIFIC IN-TRUMENT MAKRKS TO THE QUEEN,
HOLBORN VIADUCT, E. C.

Branches-45 CORNHILL, 122 REGEVI STREET.
Photographers at the CRYSTAL PALACE.
N. & Z.'s Large I lustrated Catalogue, 1200 Engravings Price 5s. 6.
Telephone No. 6583. Telegraphic Address: Negretti, London.

UNIVERSITY COLLEGE, BRISTOL.

The SECOND TFRM will begin on JANUARY 24. The College supplies for Persons of either Sex, above the ordinary School Age, the means of continuing their Studies in SCIENCE LANGUAGES, HISTORY, LITERATURE, and HEORY of MUSIC. The CHEMICAL, PHYSICAL, ELECTRICAL, ENGINEERING, GEOLOGICAL, and BIOLOGICAL LABORATORIES are open Daily. The Engineering Department includes Civil, Mechanical, Electrical, and Mining Engineering, Surveying and Architectural Work; and special arrangements for practical work have been made with various Engineers in and near Bristol. Several SCHOLARSHIPS are tenable at the College.

ENGINEERING EDUCATION.

Professor-J. RYAN, M.A., LL. M. (Camb.). D.Sc. (Lond.). UNIVERSITY COLLEGE, BRISTOL.-Courses of Civil, Mechanical, Electrical, and Mining Engineering. Mineralogy and Applied Geology for Civil and Mining Engineers. Facilities are offered in the way of College Scholarships Engineering Works Scholarships, and special arrangements for entrance into professional life.

CALENDAR, containing full information, price 1s. (by post, 1s. 3ď.). Applicati ns for Vacancies should be made as early as possible to the SECRETARY, from whom Prospectus and particulars of residence in Clifton may be obtained.

JAMES RAFTER, Secretary.

PENYWERN HOUSE MILITARY AND ENGINEERING COLLEGE,

2 PENYWERN ROAD, EARL'S COURT, S.W. PRINCIPAL-G. W. DE TUNZELMANN, B.Sc., M.I.E.E.

Telegrams-" Tunzelmann, London."

PUBLIC SERVICE AND UNIVERSITY Department. -For students preparing for the various branches of the Public Service or for Scholarships at, or entrance into, the Universities and Hospitals.

ENGINEERING DEPARTMENT -The Complete Courses qualify Students for en ry int Cooper's Hill, the Central Institution, the Koyal College of Science and into Engineering Works.

Special Courses in Electrical Engineering.

The extensive Physical and Che nical Laboratories are fitted up in the most complete manner for both Elementary and Advanced Work.

The College is supplied with very complete Geological Collections for practical instruction.

Students are regularly sent to the College by Leading Engineers and Scientific Authorities, whose Names are given in the Prospectus.

ST. THOMAS'S HOSPITAL MEDICAL SCHOOL,

ALBERT EMBANKMENT, LONDON, S.E. TWO NATURAL SCIENCE SCHOLARSHIPS of 150 and £60 respectively pen to First-year Students on entrance in OCTOBER.

Special Classes in CHEMISTY and PHYSICS, BOTANY and ZOOLOGY, are held through ut the Year, and may be joined at any time. Free Scholarships are given to distinguished Pupils of MERCHANT TAYLORS' SCHOOL, the CITY OF LONDON SCHOOL, and EPSOM COLLEGE.

Other Scholarships and Prizes of the Value of upwards of £300, the Mead Medal for Medicine, and the Ches Iden Med for Surgery are awarded annually. The Solly Medal and Prize biennially, for Surg cal Reports. Pro-pectuses and all Particulars may be obtained from the Medical Secretary, Mr. GEORGE RENDLE. G. H. MAKINS. Dean.

VICTORIA UNIVERSITY.

THE YORKSHIRE COLLEGE, LEEDS. The Second Term of the Nineteenth Session in the Department of Science, Techn logy, and Arts hegins TUESDAY, JANUARY 10. The Classes prepare for University Degrees in Arts, Science, and Medicine, as well as for various Professions.

Prospectuses of Day and Evening Classes may be had (post free) from the SECRETARY

The Hall of Residence in connection with the College is now open.

EVENING LECTURES TO WORKING ME! ROYAL COLLEGE OF SCIENCE LONDON.

The Second Course, consisting of Six Lectures on "Ore an Mining," by Prof C. LE NEVE FOSTER, D.Sc., FRS, livered at the Museum of Practical Geo ogy, in Jer yn Street. S. mencing at 8 o'clock on MON AY EVENING, JANUARY & Tickets may be ob ained by working en only on applica Museum on Monday Evening, January 2, from 6 to 10 o'clok. Fee for the Curse. 6d. Each applicant is requested to brag address, and occupation written ou a ship of paper, for which the will be exchanged.

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SCHOLASTIC.-A Master is Wante JANUARY in an important School. Work: To super. Workshops, both Wood and Metal. A practical kn writ Work necessary. Must also be able t take a Class in b ie. Mechanical Drawing, Steam and Machine ConstruCIAT holder of the pos: leaving for an important Head Masterp Salary. Kesident.-Apply, in the fi st instance, to Assis, and THRING. 36 Sackville Street, London, W.

A CURATOR for the MUSEUM 0 LEES PHILO-OPHICAL and LITERARY S CIET Wanted next FEBRUARY. Stipend £125. Particulas obtained from the SECRETARY.

HANOVER SQUARE.-Two Sets of R: (with Use of Meeting Room) adapted for Scientific Societes -Apply to J BARROW, 3 Hanover Square, W.

To Collectors and Buyers of Precious

Fancy Stones.-R. C. NOCKOLD, Diamond and Oriental Sem chant, 12 Frith Street, S ho, W., has a very large assortmen men Stones, cut and uncut. Inspection invited.

ALBERT EDWARD. JAMRA

(Late CHARLES JAMRACH),
NATURALIST,

180 ST. GEORGE STREET EAST. Implements of Savage Warfare, Idols. Sacred Masks, Peruvi Netsukis, China, Lacquer, Gongs, Shells, and other Curios.

F. H. BUTLER, M.A. Oxon., Assoc.R.S

NATURAL HISTORY AGENCY, 158 BROMPTON ROAD, LONDON Dealer in Rocks, Minerals, Fossils, and other 0 of Scientific Interest.

NOW ON VIEW:-A large and varied as-ortment of Rock cently obtained from West Shropshire and North Wales, in Diabases, variegated Volcanic Ash, Agglomerate, and Brece from the Stiper Stones, Sported Schists, and Granitite; also, & C exceptionally fine polished examples of Labradorite, Gree Quartz, Agate, Jasper, and other Ornamental Stones: Pyri e tite fron Cornwall: Chalk Polyzoa from Kent; and a Com Ostrich Eggs.

NEW LIST OF MICROSCOPIC SECTIONS

ASSISTANT LECTURER AND DEMON ROCKS AND MINERAL

STRATOR IN BIOLOGY.

The Technical Instruction Committee of the Essex County Council, desire, at once the services of a Qualified Teacher to assist and work under the direction of the Staff Leacher of Bilogy (Mr. D. Houston). The tea her's whole time will be required. Sa arv 130 per annuin and railway expenses. Apply, giving qua ifications, experience, and testimonials (c pie-), to W. COLE, Science Organizer to the Committee, 35 New Broad Street, London, E.C.

SCHOLASTIC.-An Additional Master is wanted in JANUARY in an important North rn School. Work: To teach The retical In rganic and also Practical In rganic Chemist y. Fixed Salary £150, N n-resident, which can be increased by taking additional teaching in the Technical Classes.-Apply, in the first instance, to ASKIN, GABBITAS and THRING, 36 Sackville Street, London, W.

CONTAINING MANY NEW AND INTERESTING SPE FROM COLORADO, AUSTRALIA, NEW ZEALAND HUNGARY, SCOTLAND, WALES, CORNWALL Now Reduced to 1s. 6d. each. All one FSPECIAL SETS FOR PHYSIOGRAPHY. Also Lists of Collections of Minerals, Rocks, and Fossils, Apr Appliances. Single Minerals, Chemical Minerals, Empy Ca NOVELTIES IN PRECIOUS STONES

ALL LISTS FREE OF

JAMES R. GREGORY.

88 CHARLOTTE ST., FITZROY SQUARE

MINERALOGY.

SAMUEL HENSON,

97 REGENT STREET, LONDON, W. ABLISHED 1840. Late 277 STRAND. olce Mineral Specimens, Gem Stones, Carved Opals, Polished Agates Crystal Balls, Fossils, Rocks, and Rock Sections.

LATEST ARRIVALS

by and other Varieties of Cassiterite on Quartz, Australia, Beautiful
and White Calamine, Adamite, Laurium, Crystallized Brucite, Melano-
ite, Roscorlite with Gold. Apophyllite, Mexico, very Beautiful Doubly
inated Vanadinite, Arizona, Phenacite on Quartz, Colorado. Large
al of Pyroxene, Pink Grossular, Ruby on Matrix, Burma, Diatom
Earth, Hakodati, Japan.

LLECTIONS OF MINERALS,
ROCKS, OR FOSSILS,

the Use of Students, Science Teachers, Prospectors, &c., and to illustrate the leading Text-books, in Boxes, with Trays. Specimens, 10s. 6d.; 100 do., 21s.; 200 do., 42s. Price List of Minerals, Rocks, and Stratigraphical Series of Fossils

Post Free.

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T. E. BOLTON,

FARLEY ROAD, MALVERN LINK.

O SCIENCE LECTURERS.

Mr. HUGHES'S PATENT COMBINATION OPTICAL LANN, used by late W. LANT CARPENTER, Esq., Prof. FORBES. New : constructed for B. J. MALDAN, Esq., this season. New OxyhydroMicroscope. Grand Results Dcwra Triple, Prize Medal, Highest d. Supplied to the Royal Polytechnic Institution, Dr. H. GRATTAN NESS, Madame ADELINA PATTI. &c. Patent Pamph gos Lantern e Lecture Sets Novelties Cheapest and Best. Elaborately Illu Catalogue 300 pages, 18.; Postage. 5d. Smaller do., 6d. Pamphree.-HUGHES, SPECIALIST, Brewster House, Mortimer Road, land, N.

THROAT AND COUGH

Soreness and Dryness, Tickling and Irritation, inducing Cough, and affecting the Voice. For these symptoms use

EPPS'S GLYCERINE JUJUBES.

In contact with the glands at the moment they are excited by the act of sucking, the Glycerine in these agreeable Confections becomes actively healing.

Sold only in Boxes, 7d., and Tins, 1s. 1d., Labelled. JAMES EPPS & CO., Homœopathic Chemists, LONDON.

On the 1st of every Month.

THE JOURNAL OF BOTANY,

BRITISH AND FOREIGN.

Edited by James Britten, F.L.S., British Museum.
CONTENTS:-Original Articles by leading Botanists.-Extracts, and
Notices of Books and Memoirs.-Articles in Journals.-Botanical News.-
Proceedings of Societies.

Price is. 3d. Subscription for One Year, payable in advance, 125.
London: WEST, NEWMAN, & CO., 54 Hatton Garden, E.C.

THE ZOOLOGIST.

A MONTHLY MAGAZINE OF NATURAL HISTORY.
Third Series. Edited by J. E. HARTING, F.L.S, F.Z.S., Member of the
British Ornithologists' Union, c ntains-

Original Articles by well-known naturalists in every branch of zoology; habits of anunals; arrival and departure of migratory birds; occurrence or rare birds; distrib tion and migration of British fresh-water fish: new of rare marine fish; local aquaria; British reptiles: British land and fresh water mollusca, with remarks on the haunts and habits of the species; and other matters of general interest to those w o delight in natural history. Reports of the Linnean, Zogical, and Entomol gical Societies. Reviews of na ural history books. Occasional translations from foreign zoological journals of import int and interesting articles in variour branches of Zoology. There are occasional woodents.

SIMPKIN, MARSHALL, & CO., Stationers' Hall Court.

HOLLOWAY'S PILLS

THIS MEDICINE

Is unequalled in the Cure of all Disorders of the LIVER,
STOMACH, KIDNEYS AND BOWELS. A Great PURI.
FIER of the BLOOD; a Powerful Invigorator of the
System, if suffering from WEAKNESS AND debility,
and is unequalled in Complaints incidental to Females.

SCIENTIFIC WORTHIES.

The following is a list of the Portraits that have appeared in the above Series:

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of impressions of these, printed on India paper may be had from the Publishers, price ach; or the Set of 27 Portraits in a Handsome Portfolio for £7, carriage paid.

THE PORTFOLIO MAY BE HAD SEPARATELY, PRICE 6s.

Cheques and Money Orders payable to MACMILLAN & CO.,
OFFICE OF "NATURE," 29 BEDFORD STREET, STRAND.

Neuer Verlag von GUSTAV FISCHER in JENA.

Hertwig, Dr. Richard, o. ö. Professor
der Zoologie und vergleichenden
Anatomie an der Universität München.
Lehrbuch der Zoologie. Mit 568
Abbildungen. 1892. Preis brosch.
10 Mark, geb. 11 Mark.
Korschelt, Dr. E. und Heider, Dr.
K, Privatdocenten an der Univer-
sität Berlin, Lehrbuch der verglei-
chenden Entwicklungsgeschichte der
wirbellosen Thiere. Erste und zweite
Lieferung Mit 540 Abbildungen im
Text. 1890/91. Preis: 20 Mark.
Die dritte Lieferung wird Anfang
des Jahres 1893 erscheinen.
Kraepelin, Dr. Emil, Professor der
Psychiatrie in Heidelberg, Ueber die
Beeinflussung einfacher psychischer
Vorgänge durch einige Arzneimittel.
Experimentelle Untersuchungen Mit
einer Curventafel. Preis: 6 M. 50 Pf.

Lang, Dr Arnold, Professor der Zoo-
logie und vergleichenden Anatomie
an der Universität und am eidgen.
Polytechnikum in Zürich, Lehrbuch
der vergleichenden Anatomie. 3. Ab-
theilung mit 219 Abbildungen. 1892.
Preis: 6 Mark 50 Pf. Die vierte

Lieferung, welche die Schlussabtheilung der wirbellosen Thiere enthalten wird, erscheit Anfang des Jahres 1893. Molisch, Dr. Hans, Professor der Botanik in Graz, Die Pflanze in ihren Beziehungen zum Eisen. Eine physiologische Studie. Mit einer farbigen Tafel. 1892. Preis: 3 Mark.

Oppel, Dr. med. Albert, Assistent für
Ilistologie an der Anatomischen An-
stalt der Universität München, Ver-
gleichung des Entwicklungsgrades
der Organe zu verschiedenen Eut-
wicklungszeiten bei Wirbelthieren.
1891. Preis 7 M.

Paläontologische Abhandlungen. Her-
ausgegeben von W. Dames u. E.
Kayser. N. F. I. Band (der ganzen
Reile V. Band).

Heft 4. Schröder, H, Untersuchun-
gen über silurische Cephalopoden. Mit
1 Textfigur, 6 Tafeln und 6 Blatt
Erklärungen. 1891. Preis 10 Mark.
Heft 5. Futterer, H., Die oberen
Kreidebildungen der Umgebung des
Lago di Santa Croce in den Vene-
tianer Alpen Mit einer geologischen
Karte, einer Profiltafel, 10 Petre-
factentafeln und 25 Textfiguren. Preis
etwa 20 Mark.

Semon, Richard, a. o Professor an der

Universität Jena, Studien über den Bauplan des Urogenitalsystems der Wirbelthiere. Dargelegt an der Entwickelung dieses Organsystems bei Ichthyophis glutinosus. 1891. Mit 14 lithogr. Tafeln. Preis: 12 Mark. Verworn, Dr. Max, Privatdocent der Physiologie an der Universität Jena, Psycho-physiologische Protistenstudien. Experimentelle Untersuchun gen. Mit 6 lithogr Tafeln und 27 Text-Abbildungen. Preis: 10 Mark.

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N. H. MARTIN, C. E. STUART, B Sc., H SPARGO, A. Sc.. F.L.C.

FOR SALE: FINE COPIES.

TURNER (W.) THE HERBAL OF WILLIAM TURNER, lately Over-
sene. Corrected, and Enlarged with the Thirde Parte; also a Boke of
the Bath. A most Excellent and Perfecte H m sh Apothecarye, 1568-
1561 Perfect C py, several hundred Engravings of Planis, folio, New
Panelled Calf. Gilt Leaves, 30.

WILSON (0. S.). THE LARVE OF THE BRITISH LEPIDOPTERA
AND THEIR FOOD-PLANTS, with Life-s zed Figures, drawn and
Coloured from Vature. 67 pp. and 40 Plates, Coloured Figu es of
415 pecies, with the Plants on which they feed, and 7; Coloured
Figures o Varieties. Imperial 8vo, H df Morocco. .880, £5

HERRICH-SCHAFFER (C. A. W.). SYSTEMATISCHE BEARBEITUNG
DER SCHME TERLINGE VON EUR PA. 635 Plates, Original
Colouring, and 36 Pain Pla es. 6 ols, Text, and 5 Vols. Plates, 11
Vols. 4t New Hal' Calf, 1847-56, £15.

WILLIAM WESLEY & SON,

28 ESSEX STREET, STRAND, LONDON.

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"This book will be especially valuable to the student of chem to the lecture a-sistant it is simply a sine quâ non. The exp all admirably described and of the kind which are calculated t excite the student's interest but to clearly point out to him the less they are intended to convey.'

Sir H. E. Roscoɛ, in Nature:"The very description of a god lecture experiment to one w thirty years always enjoyed performing an old one, and was eve bringing out a new ne, is something akin to that of the old warh he scents the battle from afar. And both Mr. Newth's experimen descriptions are good; so I think that no only the n vices of the but the old hands will read this book-the firt with profit with what they will do, and the sec nd with pleasure in rec le ting have done All the ordinary and many of the extraordinary ex detailed in the book may be carried ut with lile cost and with trouble; ndeed, most of them may be made by the veriest 1yr0 P stick to the letter of the description ... Of good experimen s end' (Mr. N-wth describes 625 for the non-metals alone) while a of a book in NATURE there must be a speedy end, and I will end? all those who like to see and to show go d experiments to get Mbook."

Lon lon: LONGMANS, GREEN, & CO. BOOKS AND PAPERS BY THE LA Prof. Sir RICHARD OWEN, FR S.

Lists on Application.

DULAU & CO., 37 Soho Square, London.

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