MICROLOCICAL LABORATORY AND SCHOOL OF NATURAL SCIENCE.

GRATIS AND POST FREE.

THE NEW COLLECTION OF

Specimens is now being prepared. Gentlemen are invited to send in their applications without delay, as only 5000 copies will be issued.

Sample Slide of expertly prepared ROCK SECTION, 1/-, post free. Metals, Minerals and Rocks expertly mounted for Microscope, 1/- each, from material supplied.

LESSONS IN PRACTICAL LITHOLOGY BY COrrespondence. A vacancy for one Geological Student, desirous of passing with high distinction in University or Civil Service. Small premium. Pocket-money allowed. Apply:- THE DIRECtor, MicrologICAL LABORATORY,

11 ASPENLEA ROAD, HAMMERSMITH, LONDON, W.

MINERALS, ROCKS, FOSSILS.

A large stock of BRITISH AND FOREIGN MINERALS always on view. CORNISH MINERALS

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 sent 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.

LIVING SPECIMENS FOR

THE MICROSCOPE.

Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphærium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many other specimens of Pond Life. Price is. per Tube, Post Free. Helix pmatia, Astacus, Amphioxus, Rana, Anodon, &c., for Dissection purposes. THOMAS BOLTON,

25 BALSALL HEATH ROAD, BIRMINGHAM. 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, Caryophyllia, Alcy. onium; Hormiphora (preserved); Leptoplana; Lineus, Amphiporus, Nereis, Aphrodite, Arenicola, Lanice, Terebella; Lepas, Balanus, Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Eledone, 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.

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 collection, 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 I. 336 Specimens of Rocks 380 Marks. 420 270 99

99

Ia.

336 Slides ...

II.

IIa.

250 Specimens of Rocks 250 Slides...

COLLECTIONS OF MINERALS, FOSSILS, METEORITES,

PURCHASED FOR CASH OR EXCHANGED.

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.

WATKINS & DONCASTER,

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, references are permitted to distinguished patrons, Museums, Colleges, &c. A LARGE STtock of insects, birds' EGGS 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.

MICROSCOPICAL PETROGRAPHY.

Gentlemen interested in the above study are invited to send to
JAMES R. GREGORY & CO.,
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 Half 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, £4 4s.

COUNTY OF LONDON.

EDUCATION ACTS, 1870 TO 1903.

The London County Council invites applications for the following appointments in the Education Department:

FOUR DIVISIONAL INSPECTORS, who will have the general superintendence of large districts and give special attention to the coordination of education within their areas. Their chief duties will be to inspect pupil teachers' centres, secondary schools, training colleges, science and commercial centres, polytechnics, and all institutions for higher educa tion aided by the Council. Candidates will be required to possess special qualifications in one of the following subjects :-(1) English language and literature; (2) Modern languages; (3) Mathematics and Science; (4) Technology (including mechanical and electrical engineering). The salary will be in each case 600 a year, rising by annual increments of £25 to a maximum salary of £800 a year.

ONE ART INSPECTOR, whose chief duties will be to inspect the art teaching in elementary and secondary schools, art schools and polytechnics. The salary will be £400 a year, rising by annual increments of £20 to a maximum salary of £500 a year.

ONE INSPECTOR of WOOD and METAL WORK, whose chief duties will be to inspect the teaching in wood and metal work in manual training centres and elementary and secondary schools. He will also be required to inspect certain classes at polytechnics. The salary will be £400 a year, rising by annual increments of £20 to a maximum salary of £500 a year.

ONE INSPECTOR of WOMEN'S TECHNICAL CLASSES, whose chief duties will be to inspect technical classes for women (including upholstery, flower making, needlework, millinery, dressmaking and dress. cutting) in evening schools, girls' clubs and polytechnics. The salary will be £300 a year, rising by annual increments of £20 to a maximum salary of £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 will in other respects be subject to the usual conditions attaching to the Council's service, particulars of which are given in the form of application. In connection with the appointments there is no restriction with regard to

BIRKBECK COLLEGE.

BREAMS BUILDINGS, CHANCERY LANE, E.C. FACULTY OF SCIENCE.

Chemistry

Physics ...

Mathematics

Botany
Zoology...

100

J. E. MACKENZIE, Ph.D., D.Sc H. WREN, Ph.D., B.A, B.Sc. (ALBERT GRIFFITHS, D.Sc. D. OWEN, B.A., B.Sc.

B. W. CLACK, B.Sc.

JE. H. SMART, M.A.

1 W. G. BIRT, B.A., B.Sc.

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

F. E. FRITSCH, Ph.D., B.Sc. H. W. UNTHANK, B.A., B.Sc. Geology & Mineralogy GEO. F. HARRIS, F.G.S. Assaying, Metallurgy & Mining. GEO. PATCHIN, A.R.S.M. RESEARCH in Chemistry and Physics in well-equipped laboratories. French, German, Spanish, Russian, Dutch, & Italian Classes. EVENING CLASSES also in Biology, Physiology, Practical Geometry, Building and Machine Construction, Steam, Theoretical and Applied Mechanics, Land and Quantity Surveying, and Estimating.

Calendar 6d. (post free 8d.), on application to the SECRETARY.

Short Courses suitable for the Intermediate and Final B.Sc. Examinations of London University will be conducted by Teachers recognised by the University as follows:

GEOLOGY.-A. J. MASLEN, F.L.S. An Excursion (about 5 days, during the Easter vacation) to the Isle of Wight, for the study of the Geology of the Island; also Museum Demonstrations and Field Meetings near London during the Summer Term.

BOTANY.-T. G. HILL, A.R.C.S., F.L.S. A Summer Course in Practical Plant Physiology and (Ecology, with suitable Excursions for the Study of Plant Relationships. Saturdays, 10 to 1 commencing April 8.

For particulars, apply to the Head of the Natural Science Department.

GUY'S HOSPITAL MEDICAL SCHOOL. (UNIVERSITY OF LONDON.)

The SUMMER SESSION will begin on May 1, and Students then entering will be eligible to compete for Entrance Scholarships of the com

DENTISTRY,

Leading to Degrees and Diplomas.

ALL COURSES AND DEGREES ARE OPEN TO BOTH MEN AND WOMEN STUDENTS.

In the Medical School there is a separate Dissecting Room for Women with a qualified Woman Demonstrator.

Graduates of other Universities may, after two years' study or research, take a Master's Degree.

Syllabuses with all information will be sent on application to the SECRETARY.

THE SIR JOHN CASS TECHNICAL

INSTITUTE,

JEWRY STREET, ALDGATE, E.C.

A Course of Twelve Lectures and Demonstrations on

PHYSICAL CHEMISTRY

will be given during the Summer Term by

G. SENTER, B.Sc., Ph.D.,

Lecturer on Chemistry at St. Mary's Hospital Medical School. The Lectures and Demonstrations will be held on Wednesday Evenings, 7-9 p.m., commencing Wednesday, March 29. The Course is arranged for students of Chemistry and Physics and for those engaged in Chemical and Electrical industries, who desire to obtain a knowledge of the modern developments of Physical Chemistry.

It will also be adapted to the requirements of candidates for the final B.Sc. examination of London University.

A Course of Laboratory Work in connection with the lectures will be held on Wednesday afternoons.

A detailed Syllabus may be had upon application at the Office of the Institute or by letter to the PRINCIPAL.

W. H. DAVISON, M. A., Clerk to the Governing Body.

Medals, Scholarships, and Prizes awarded during the period of Studentship The Governors have opened AN ADDITIONAL 50 BEDS on the Medical side of the Hospital.

The numerous Hospital Appointments in both special and general departments are open to Students without charge, and the bolders of Resident Appointments are provided with board and lodging.

The Dental School provides the full Curriculum required for the L.D.S. England.

A Handbook of Information for those about to enter the Medical Profession will be forwarded on application.

For Prospectus of the School, containing full particulars as to Fees, Course of Study advised, Regulations for Residents in the College, &c, apply personally, or by letter to the DEAN, Guy's Hospital, Londo Bridge, S. E.

ALBERT EMBANKMENT, S.E.
(UNIVERSITY OF LONDON.)

The SUMMER SESSION will COMMENCE on APRIL 26
The Hospital occupies one of the finest sites in London, and contains 60
Beds, of which 540 are in constant use.

Entrance and other Scholarships and Prizes (26 in number), of the value of more than £500, are offered for competition each year.

Upwards of 60 Resident and other Appointments are open to Students after qualification.

A Students' Club forms part of the Medical School Buildings, and the Athletic Ground, nine acres in extent, situated at Chiswick, can be reached in forty minutes from the Hospital.

A Prospectus, containing full particulars, may be obtained from the undersigned.

J. H. FISHER, B.S. Lond., Dean

For other Scholastic Advertisements, see page clxxxiv.