CXXXViil 

THE INSTITUTE OF PHYSi¢Ss. 
LECTURES ON PHYSICS IN INDUSTRY. 
The Fourth Lecture of this series on ‘‘ THE APPLICATIONS OF Puysics TO 
THE CERAMic INpusTRIES” will be delivered by Dr. J. W. MELLOR, on 
WeEDNEsDay, May 9, 1923, at 5.30 P.M., at the INSTITUTION OF ELECTRICAL 
Encineers, Victoria Embankment, W.C.2. Sir J. J. THomson, O.M., 
Pres. Inst.P., will preside. Admission free by ticket to be obtained from 
F. S. Sprers, Secretary, 10 Essex Street, Strand, W.C.2. Telephone: 
City 4002. 

UNIVERSITY OF LONDON. 
A Lecture on “‘ THE RoTaTION OF THE EARTH AND ITS INFLUENCE ON 
OpticaL PHENOMENA” will be given by Pror. Dr. H. A. LORENTZ, 
F.R.S. (Professor of Physics in the University of Leiden), at UNIVERSITY 
CoLLeGE, London (Gower Street, W.C.1), on Tuurspay, May 17, at 5.30 P.M. 
The Chair will be taken by Sir Witttam H. Braco, K.B.E., F.R.S. 
(Quain Professor of Physics in the University). ADMISSION FREE, 
WITHOUT TICKET. 
EDWIN DELLER, Academic Registrar. 

THE ROYAL. SOCIETY, 
MOSELEY RESEARCH STUDENTSHIP. 
The Secretaries of the Royal Society are prepared to receive applications 
fora MOSELEY RESEARCH STUDENTSHIP of the value of £300 
per annum, awarded ‘“‘for the furtherance of experimental research in 
Pathology, Physics, and Chemistry, or other branches of science, but not 
in Pure Mathematics, Astronomy, or any branch of science which aims 
merely at describing, cataloguing, or systematizing.” The appointment is, 
in the first instance, for two years, but may in exceptional circumstances be 
extended. 
Applications must be received not later than June 1. Further particulars 
and forms of application can be obtained from the AssIsTANT SECRETARY 
OF THE Roya. Society, Burlington House, London, W.1. 

THE LONDON SCHOOL OF ECONOMICS AND 
POLITICAL SCIENCE. 
A RESEARCH STUDENTSHIP for post-graduate work of the value 
of £175, in addition to fees, tenable for two years, will be awarded in July 
1923- Candidates should apply to the Direcror, London School of 
Economics, Houghton Street, Aldwych, London, W.C.2>fs¥°a"form of 
application, which should be completed and returned not later than May 31. 

UNIVERSITY OF LONDON. 
The UNIVERSITY STUDENTSHIP in PHYSIOLOGY of the value 
of £50 will be awarded shortly to a student qualified to undertake research 
in Physiology. Applications must reach the undersigned (from whom {ull 
particulars may be obtained) not later than May 31, 1923. 
EDWIN DELLER, Academic Registrar. 

UNIVERSITY OF LONDON. 
DIXON FUND. 
Applications for grants from the DIXON FUND for assisting scientific 
investigations, accompanied by the names and addresses of two references, 
must be made to the Acapemic ReaisTRAR, University of London, South 
Kensington, S.W.7 (from whom further particulars may be obtained) before 
May 15, 1923 
TUITION BY CORRESPONDENCE 
Rapid preparation by highly qualified tutors for 
MATRICULATION, 
Intermediate and Final B.A. and B.Sc., 
OXFORD AND CAMBRIDGE LOCALS. 
Single subjects may be taken :—Latin, Greek, Hebrew, French, 
Mathematics, Chemistry, Logic, etc. For terms address— 
Mr. J. CHARLESTON, B.A. (Hons. Oxon, & Lond.), 
14 Elsham Road, Kensington, W.14. 


KENT EDUCATION COMMITTEE. 
COUNTY SCHOOL FOR GIRLS, BROMLEY. 
WANTED in September a SCIENCE MISTRESS. Principal subject, 
Botany to Higher Certificate Standard ; subsidiary Nature Study and either 
Mathematics or Physics. Good degree and experience essential. Provincial 
Burnham scale. Apply immediately to the Head Mistress, 
E. SALTER DAVIES, Director of Education. 
April 26, 1923. 
TRANSLATIONS, BIBLIOGRAPHICAL 
Some owe Apply M.Sec., 68 Elms Road, 

NATURE 

[May 5, 1923 
BIRKBEGK GOLLECE. 
(UNIVERSITY OF LONDON.) 
Principal—GEORGE SENTER, D.Sc., Ph.D., F.I.C. 
EVENING COURSES for the Degrees of the 
University of London in the Faculty of Science and 
for the Geography Diploma. 

Facilities are also provided during both day and 
evening for Post-Graduate and Research Work. 
Catendar, 1s.; by post, 1s. 5d. Prospectus free. 
For full particulars, apply to the SECRETARY, 
Birkbeck College, Fetter Lane, E.C.4. 
APPOINTMENTS BOARD 
OF THE 
IMPERIAL COLLEGE OF SCIENC 
AND TECHNOLOGY, 
SOUTH KENSINGTON, S.W.7. 
EMPLOYERS requiring men who have received a thorough training in 
Science and Technology, and who are Diplomates or Associates of the 
Imperial College, or of one of its three constituent Colleges, are asked to 
make use of the services of the Board. No fees. 
The Imperial College includes The Royal College of Science, The Royal 
School of Mines, and The City and Guilds (Engineering) College. The 
Associates of the Colleges receive thorough training in Science and Tech- 
nology, including Aeronautics, Applied Optics and Optical Engineering, 
Biology, Chemical Technology, Chemistry (all branches), Engineering ail 
branches, including Metallurgy, Mining, Mining Geology and Oil Tech- 
nology), Geology, Mathematics and Mechanics, and Physics. 
CEYLON. 
A vacancy exists foran ASSISTANT GOVERNMENT ANALYST. 
A candidate must be Associate or Fellow of the Institute of Chemistry 
by examination in Branch E (chemistry—including microscopy—of Food 
and Drugs and Water); and must have had experience in general analytical 
and bacteriological work in addition to experience in toxicological analysis. 
Honours Degree of a British University in addition preferred. 
Salary £500, rising by two increments of £30, and one of £40 to £600 in 
fourth year or on reaching age 30, then by yet annually to £960. Rent 
allowance in addition. 
Free passages for officer and family up to four persons inclusive. 
Appointment on agreement for three years, but reasonable prospect of 
permanent appointment if satisfactory. 
Applications should be addressed in writing to the AssisTANT PRIVATE 
Secretary (Appointments) Colonial Office, S.W-.1, from whom application 
forms may be obtained. Testimonials should not be sent until asked for. 
INDIAN INSTITUTE OF SCIENCE, 
BANGALORE. 
PROFESSORSHIP OF BIOCHEMISTRY. 
There will be a vacancy in the PROFESSORSHIP of BIO- 
CHEMISTRY in 1924. Applicants will be expected to have achieved 
some considerable reputation as research workers and must have had good 
experience in teaching, 
Particulars may be obtained from the SecrETARy, Cambridge University f 
Appointments Board, University Offices, St. Andrews Street, Cambridge, 
who has been authorised to collect and forward applications to the Selectin 
Body. Applications should reach the Secretary by May 31, 1923. 




WANTED—A Translator of Foreign 
Technical and Scientific Papers. A good knowledge of French, German, — 
Spanish, and Italian essential. Applications, stating age, qualifica- 
tions, and experience, to be addressed to the MANaGER, Research 
Department, Nobel’s Explosives Coy., Ltd., Ardeer, Ayrshire. 
FOR RESEARCH WORK IN LONDON. 
A firm of consultants require: (1) A Physical Chemist (Graduate); (2) 
A man having some experience of the Textile Industries, to act as 
Secretary. Apply, giving fullest particulars of training, experience 
etc., to Box No. 77, c/o Narure Office. - 
TO LEARNED SOCIETIES—Good Offic 
accommodation in upper part of house, quiet situation, 
West side of Tavistock Square. Resident caretaker. Bo 
5, c/o NATURE Office. 1 
RADIO-ACTIVITY.—Experimental Outfit. 
Clean, safe, convenient, Materials, apparatus, full instructions. Show: 
electrical, luminous and photographic effects. 10s. 6d. —GrRay, 
Grange Road, Lewes. 







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