clxx 
KEBLE COLLEGE, OXFORD. 
NATURAL SCIENCE SCHOLARSHIP, 1917. 
An examination will be held in this College on March 13 fora SCIENCE 
SCHOLARSHIP of the annual value of £60, with laboratory fees £20. 
Subjects: Chemistry 0» Biology, with e'ementary Physics, and for 
Biologists elementary Chem stry as well. 
Intending candidates should apply to Dr. Harcnett Jackson, the 
Science Tutor, for in‘ormation, 
PHYSIOLOGY.—Private lessons given by 
experienced coach for all Medical Exams. and B.Sc., laboratory work, 
practice in “‘spotting,”” &c. Fees reasonable. Easy reach of Central 
London.—Apply “' P.,"’ Box 25, c/o Nature Office. 
SOUTH AFRICAN SCHOOL OF MINES 
ANDTECHNOLOGY, JOHANNESBURG. 
We are instructed by the Council to announce that the following 
appointments have been made :— 
PROFESSOR OF ENGLISH, LOGIC AND PHILOSOPHY. 
Prof. C. Max Drennan, Galway. 
PROFESSOR OF FRENCH. 
Dr. Morcan Watkin, Cardiff. 
PROFESSOR OF BOTANY. 
Dr. C. E. Moss, Cambridge. 
PROFESSOR OF ZOOLOGY. 
Dr. H. B. FanruHam, Cambridge. 
PROFESSOR OF HISTORY. 
Mr. Macmitcan, Grahamstown. 
PROFESSOR OF DUTCH. 
Dr. Krick, Pretoria. 
PROFESSOR OF CLASSICS. 
Mr. Hormeyr, Capetown. 
ASSISTANT TO PROFESSOR OF CLASSICS. 
Mr. WaGner, Johannesburg. 
ASSISTANT‘ IN ECONOMICS. 
Ir. HurcHeon, Capetown. 
PROFESSOR OF PHYSICS. 
Dr, Occ, Grahamstown. 
CHALMERS, GUTHRIE & CO., Limirep, 
9, IDOL LANE, LONDON, E.C., 
AGENTS. 
SOUTH AFRICAN SCHOOL OF MINES 
AND TECHNOLOGY, JOHANNESBURG. 
WANTED, a LECTURER for the PEPARTMENT of CHEMISTRY. 
Oneewho has had works experience, with ability for research, would be pre- 
erred. Salary £450 per annum, rising by arnual increments of £50 to £600. 
The sum of £50 will be allowed for travelling expenses to South Africa, and 
half salary from date of sailing'till arrival in Johanne-burg A three years’ 
engagement will be given.‘ A médical certificate will be required before 
appointment. Members of the staff have to supervise and take part in 
evening work. Applications and testimonials in triplicate, s'ating age and 
qualifications, to be sent to Cuatmers Guturie & Co., Limirep, 9 Idol 
Lane, London, E:.C. No application from those fit for military service will 
be entertained. 
NOBEL’S EXPLOSIVES COMPANY, LIMITED, 
ARDEER FACTORY, STEVENSTON. 
There are at present several vacancies on the Staff of the above Factory 
for men suitable for training for the control of manufacture. 
Applicants, who must be qualified Chemists, preferably possessing a 
University degree or its equivalent, should submit full details of their 
training and experience to 
THE MANAGER—RESEARCH SECTION, 
Ardeer Factory, Stevenston. 
WANTED by a Government Controlled 
Firm of Engineers and Optical and Scientific Instrument Makers in 
Leicester (at present on munitions work), an experienced man for 
research in applied physics and mechanics to deal with problems in 
connection with design a'd manufacturing processes. No one already 
on Government work will be engaged without the consent of present 
employers.—Apply your nearest Employment Exchange, mentioning 
this Journal and No. A2855. 
WANTED, for the Heckmondwike Secon- 
dary School, an ASSISTANT MASTER, must be well qualified .in 
mathematics; chemistry or physics or German a recommendation. 
Salary commencing at £170 per annum Application forms, which can 
be obtained at the School, must be returned to the. Headmaster on or 
before February 9. 
A. H. REDFEARN, Clerk to the Governors. 
CHEMICAL LABORATORY ASSISTANT 
wanted at once, ineligible for. the Army; wages 25s. to 30s. week, with 
dinner and tea daiiy.—Apply to Dr. Sranrorv, Chemical Laboratory, 
War Hospital, Whitchurch, nr. Cardiff. 
NATURE 
[FEBRUARY I, 1917 
Sir WILLIAM TILDEN’S New Book. 
CHEMICAL DISCOVERY & INVENTION 
IN THE TWENTIETH CENTURY. 
By SIR WILLIAM TILDEN, F.R.S., D.Sc., LL.D., Se.D. 
With 160 Plates, Portraits, and other Illustrations; pp. sco ; 
large 8vo, cloth, 7/6 net. 
Part I; CuemicAL LasoraTortes OF THE WorLD AND THE Work 
PONE BY THEM. Laboratories for General Teaching ; for Special Purposes ; 
Apparatus. If: Mopern I)iscoveriES AND THEORIES (10 ca byt Hr 
Mopern Appiications (14 chaps.). 1V: Mopern ProGress 1n ORGANIC 
Cuemistry (5 chaps.). AvrrENDIX; INDEX. 
NATURAL PAINLESS CHILDBIRTH ; 
AND THE DETERMINATION OF SEX. 
By F. SYLVAN, M.D. 
With 24 Plates. Cloth, 1/6 net. (Post free, 1/9.) 
GEORGE ROUTLEDGE & SONS, Ltd. 
G E. GEORGE & SONS, Ltd., 
23 Jacob Street, London, S.E., England. 
BOO KS ! Edueational, Medieal, all other 
subjects, and for all Exams. 
SECOND-HAND AT HALF PRICES: New Books at Discount Prices. 
CaTALOGUES FREE. State Wants. Books sent on approval 
BOOKS BOUGHT: Best Prices Given. 
W. & C, FOYLE, 121-123 Charing Cross Road, London. 
Messrs, W. HEFFER & SONS, 
BOOKSELLERS, CAMBRIDGE, 
Are OPEN TO PURCHASE 
complete sets of the following :— 
BOOKS, MAGAZINES 
and PERIODICALS 
Despatched regularly to all parts. 
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prices quoted. 
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Librarians, Professors, Executors, and 
others desirous of disposing of the above 
or any. other Scientific Periodicals. 
and Books, both English and Foreign, 
are invited to communicate with them, 
Best Prices Given. Licensed Valuers for Probate. 
