exlvi 
THE SIR JOHN CASS TECHNICAL | 
INSTITUTE, 
JEWRY STREET, ALDGATE, E.C. 
The following Special Courses of Instruction will be given during the 
Lent and Summer Terms, 1917 -— 
FUEL ANALYSIS. 
By J. S. S. BRAME. 
A Course of Laboratory work, Friday evenings, 7 to 10 p.m., commencing 
FRIDAY, JANUARY 10, 1917. 
TECHNICAL GAS ANALYSIS. 
By CHARLES A. KEANE, D.Sc., Ph.D., F.1.C. 
A Course of Laboratory work, Wednesday evenings, 7 to 10 p.m., com- 
mencing WEDNESDAY, APRIL 18, 1917. 
A detailed Syllabus of the Courses may be had upon application at the 
Office of the Institute, or by letter to the Principat. 
GRESHAM LECTURES: Lent Term, 1917. 
THE GRESHAM LECTURER !N ASTRONOMY, 
Mr. ARTHUR R. HINKS, M.A., F.R.S., 
will deliver a course of Four Lectures 
on JANUARY 16, 17, 18, 19, at 6 p.m., at 
GRESHAM COLLEGE, BASINGHALI STREET, E.C., on 
“THE ART OF MEASURING.” 
I. Measures of Length and Position on the Plane. 
If. Measures of Angle and Position on the Sphere, 
III. Measures of Time. 
IV. Measures of Weight and Mass. 
The Lectures are Free to the Public. 
TRANSVAAL UNIVERSITY COLLEGE, 
PRETORIA, TRANSVAAL. 
The establishment of a-Faculty of Agriculture at the Transvaal University 
College has received the sanction of the Minister of Education, and applica- 
tions are now invited for the following posts :— 
(1) Professor of Agriculture and Dean of the Faculty. 
(2) Professor of Agricultural Botany. 
(3) Professor of Agricultural Chemistry. 
‘The Professor of Agriculture will be expected to organise the work of the 
Faculty generally, and will at the outset be responsible for the teaching in 
Field and Animal Husbandry, also in Estate Management and Agricultural 
Economics. 
The salaries attached to these posts will be £800 per annum, rising in the 
case of the Professor of Agriculture and Dean of the Faculry by annual 
increments of £50 to £1,000, the first increment to be granted after three 
years’ service. 
Applicants must be graduates of a University or Agricultural College, and 
should be men of some experience both in teaching and research work. The 
applicants for the Chairs of Agricultural Botany and Chemistry should be 
under 45 years of age and should have received a thorough training in Pure 
Botany and Chemistry respectively as well. In the case of the Professor of 
Agriculture, if any applicant is particularly well qualified in respect of 
organising ability and experience, the age limit may be raised to 48 years. 
Appointments will be made in the first instance for three years; at the 
expiry of this period, if the appointment is renewed, the incumbent will be 
placed on the permanent Staft of the College. Conditions as to leave and 
pension will be those approved by the Minister of Education for the Univer- 
sities of the Union of South Africa. 
Applications (including, besides testimonials, full information as to age, 
academic standing, teaching and organising experience, research and pub- 
lications) should reach the ReGistrar, Transvaal University College, 
Pretoria, Transvaal, on or before February 28, 1917. In the case of success- 
ful applicants from oversea, notification of appointment will be cabled and a 
first-class passage for the sea voyage will be provided (also for wife if 
applicant is married). 
Successful applicants from oversea will receive half pay from the date of 
sailing, and full pay from the date of assumption of duty. They will enter 
upon their duties on May 1, 1917, or as soon thereafter as may be. In the 
event of any applicant being unable to assume duty on May 1, he should 
specify in his application the earliest possible date. 
The College possesses the land for an Experimental Farm, and every 
opportunity for research will be provided. 
English und Dutch are official languages of South Africa, and successful 
applicants not familiar with both will be expected to qualify within a 
reasonable time. 
SOUTH AFRICAN SCHOOL OF MINES 
& TECHNOLOGY, JOHANNESBURG. 
WANTED, ASSISTANT FOR MATHEMATICAL DEPART- 
MENT, one who has graduated with honours in Mathematics. Salary 
4350 per annum, rising by annual increments of £50 to the maximum of 
4450. The sum of £50 will be allowed: for travelling expenses to South 
Africa, and half salary from date of sailing till arrival in Johaunesburg. A 
medical ceruticate will be required before appointment. Members of the 
staff have to supervise and take part in evening work. The next Session 
begins early in March. Applications to be sent in triplicate, as early as 
po sible, to Messrs. Cuaumers, Gururie & Co., Ltd., 9 Idol Lane, 
London, E.C. 
NATURE 
[JANUARY II, 1917 
BIRKBECK COLLEGE, | 
BREAMS BUILDINGS, CHANCERY LANE, E.C. 
COURSES OF STUDY (Day and Evening) for Degrees of the 
UNIVERSITY OF LONDON in the 
FACULTIES OF SCIENCE & ARTS 
(PASS AND HONOURS) r 
Under RECOGNISED ‘TEACHERS of the University. 
SCIENCE.—Chemistry, Physics, Mathematies (Pure and 
Applied), Botany, Zoology, Geology. 
ARTS.—Latin, Greek, English, Freneh, German, Italian, 
History, Geography, Logic, Economies, Mathematies (Pure 
and Applied). 
Evening Courses for the Degrees in Economics and Laws. 
POST-GRADUATE AND RESEARCH WORK, 
= Day: Science, £17 10s.; Arts, £10 10s. 
SESSIONAL FEES area: Science, Arts, or Economics, £5 5s. 
Prospectus post free, Calendar 3d. (dy post 5d.), from the Secretary. 
SOUTH-WESTERN POLYTECHNIC 
INSTITUTE, CHELSEA. — 
Day and Evening Courses in the Faculty of Science and 
Engineering. . 
Technical Chemical Courses. 
Pharmacy and Dispensing Courses. 
Particulars may be obtained on application to the Secretary 
(Room 44). SIDNEY SKINNER, M.A., Principal. 
Telephone: Western 890. 
THE UNIVERSITY OF LEEDS. 
DEPARTMENT OF AGRICULTURE. 
Applications are invited for the position of additional Instructor in Horti- 
culture. Salary £150 a year. Applications will be received up to 
January 24, 1917, and should be addressed to THR Srecrerary, The Uni- 
versity, Leeds, from whom further particulars may be obtained. 
RESEARCH ASSISTANT in the Institu- 
tion for Research in Animal Nutrition at Leeds University. The 
SecreTArY of the University will receive applications for this position 
up to January 20. Full particulars may be obtained on application. 
ZOOLOCIST—F.R.M.S. requires position in Marine Biological Labor- 
atory or Agricultural Entomology ; thorough knowledge Microscopical 
work, Photo-Micrography,&c. Hox 216, NATURE, St. Martin's St.,W.C. 
SCIENTIFIC JOURNALS WANTED. 
We buy sets and runs of Journal of the Chemical Society (early 
vols. especially), Proceedings and Transactions of the Royal 
Society, Proceedings of the Physical Society, Journal of the Royal 
Horticultural Society (first 6 vols ), Journal of Physiology, Philo- 
sophical Magazine, Journal of Botany, etc. Also Natural History 
Books (especially with coloured plates). 
Catalogues Issued. New Books and Journals Supplied. 
JOHN WHELDON & CO,., 
38, Great Queen Street, Kingsway, London, W.C, 
Vi AN Anthropological Science, 1/- per part, 
10/- a year, post free anywhere. 
CONTENTS OF JANUARY ISSUE. 
OrictnaL Artictes: A Red Indian Coiffure —Stone Implements from 
\ 
An illustrated monthly record of 
Ashanti. (/éustrated.) — Siberian Bronzes and Chinese Jade. (With 
Plate A.)—The Directi:g of Conscious Agents in some Japanese 
‘«Imitative” Magical Practices.—Supposed Duod-cimal System in Burum 
Language.—Transport of the Coco-nut across the Pacific Ocean.—Notes on 
a Peculiar Game resembling Draughts played by the Maori Folk of New 
Zealand. (/llustrated )—REViEWS OF 7 BOOKS.— Note: Accessions to the 
Library of the Royal Anthropological Institute. 
London: The Royal Anthropological Institute, 50 Great Russell St. 
General Agent: FRANCIS EDWARDS, 83 High Street, Marylebone, W. 
DOES THE EARTH ROTATE 
ILLUSTRATED CHART 
ny W. WESTFIELD 
CLEARLY PROVES IT IS 
A FIXTURE | 
Post Free 43d. 
F. GOODALL, BATH. 
Desk 7. 
Printer, 
