clxii 
UNIVERSITY OF LONDON, 
The following Lectures have been arranged : 
A Course of Three Lectures on ‘* ProBLems IN Revatiyity,” 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.) on 
Monpay, June 4; Tursvay, June 5; and THURSDay, June 7, at 5.30 P.M. 
At the first Lecture the Chair will be taken by Dr, A. N. WHITEHEAD, 
Sc.D., LL.D., F.R.S. (Professor of Applied Mathematics in the Imperial 
College of Science and Technology). 
‘A Course of Three Lectures on ‘THE Srrucrur« AND BEHAVIOUR OF 
THE MOLECULE” by Proressok GILBERT N. LEWIS, Ph.D. (Professor 
of Chemistry in the University of California), at University CoLtecr, 
London (Gower Street, W.C.), on WEDNESDAY, June 6; Frinay, June §; 
and Turspay, June 12, at 5 P.M. At the first Lecture the Chair will be 
taken by Professor F. G. Donnan, C.B.E., F.R.S. (Professor of Chemistry 
in the University). ; 
ee ae TO THE LECTURES IS FREE, WITHOUT 
EDWIN DELLER, Academic Registrar. 
LT 
EMPIRE COTTON GROWING 
CORPORATION. 
THE BRITISH COTTON INDUSTRY 
RESEARCH ASSOCIATION. 
RESEARCH STUDENTSHIPS. 
SPECIAL STUDY STUDENTSHIPS. 
Further Studentships (for University graduates only), about eight in 
number, are offered. They are of the value of £250 per annum each, with 
certain additional allowances and travelling expenses, and are tenable for 
one year. They will be awarded in July next. 
‘These Studentships are intended to provide opportunities for additional 
training in scientific research bearing on plant genetics and physiology, 
entomology, physics, etc., or for the study of those branches of tropical 
agriculture which may be of service to men who may subsequently be 
engaged in agricultural administration or inspection in_cotton-growing 
couutries. One Studentship is offered by the British Cotton Industry 
Research Association for candidates having special knowledge of physics, 
engineering or textile technology with a view to its subsequent application 
on the industrial side. 
The intention underlying the allocation of these Studentships is to 
increase the supply of workers with the necessary qualifications, who may 
later make use of the agricultural or industrial applications of their know- 
ledge, and so find occupation in and be of service to cotton production and 
to the industry. 
Applicants for a Studentship under the Empire Cotton Growing Corpora- 
tion must be prepared to spend their Studentship year at the West Indian 
Agricultural College, Trinidad, or at some other Institution abroad, selected 
by the Corporation, and pass a medical examination. 
Particulars of che conditions of tenure of the Studentships and Forms of 
Application may be obtained from the Secretary, The Empire Cotton 
Growing Corporation, Millbank House, Millbank, l.ondon, S.W.1. Forms 
of Application must be returned not later than June 18, 1923. 
RAMSAY MEMORIAL FELLOWSHIPS FOR 
CHEMICAL RESEARCH. 
The Trustees will consider, at the end of June 1923, applications for 
FELLOWSHIPS not exceeding two in number, one of which is limited to 
candidates educated in Glasgow. The value of each Fellowship will be 
£250 per annum, to which may be added a grant for expenses not exceeding 
430 per annum. 
The Fellowship will normally be tenable for two years, and may be ex- 
tended for a third year. 
Full particulars can be obtained from the undersigned, to whom applica- 
tions must be forwarded not later than June 15, 1923+ 
WALTER W. SETON, 
Organising Secretary, 
University College, London 
Ramsay Memorial Fund. 
(Gower Street, W.C.1). 
UNIVERSITY OF BIRMINGHAM. 
JAMES WATT RESEARCH FELLOWSHIP. 
The Council invites applications for the JAMES WATT RESEARCH 
FELLOWSHIP in the Thermo-Dynamics of Internal Combustion Engines. 
Candidates should hold an Honours Degree in Engineering of a British 
University, and have had some experience in Research. The Fellowship 
has at present an annual value of £220, and is renewable. Applications 
should be sent in not later than May 31, 1923. 
Further particulars may be obtained from the DEAN of the Facut ry or 
Science, The University, Edgbaston, Birmingham. 
GEO. H. MORLEY, Secretary. 
EE 
TO SCIENTISTS AND RESEARCH STUDENTS. 
THE INTERNATIONAL BIBLIOGRAPHICAL SERVICE BUREAU, 
employed by British Government Departments, University Professors, etc., 
supplies complete Continental and American bibliographies on any scientific, 
literary, or medical subject. Chemical work a speciality. Extracts made. 
Headquarters: Vienna. English representative; ‘“ALEXANDRIAN,” 1A 
Longridge Road, Earl's Court, S.W.s. 
Longridge Road ee 
LABORATORY (or premises suitable ‘for 
same) required in S.W.1 district. Full particulars to Box 188 THE 
Lonpon Press EXCHANGE, 108/111 St. Martin’s Lane, W.C.2. 
NATURE 

[May 26, 1923 
CHELSEA POLYTECHNIC, 
CHELSEA, S.W.3. 
Day and Evening Courses in Science under Recognised Teachers 
of London University, 
I, INDUSTRIAL CHEMISTRY DEPARTMENT. 
Technical Courses in Analyticaland Manufacturing Chemistry, 
Pharmacy, Food and Drugs, A.I.C. Courses, Metallurgy, Assaying, 
Foundry Work, Research, 
Il. INDUSTRIAL PHYSICS DEPARTMENT. 
Practical work in General Physics, Applications to Industri 
Metrology, Calorimetry, Illumination, Acoustics, Electrical 
Measurement, Research. 
lf, BIOLOGICAL AND GEOLOGICAL DEPARTMENT. 
Courses for B.Sc., etc., in Botany, Geology, Mineralogy, Zoology, 
Special Courses in Bio-chemistry, Bio-physics, Bacteriology, 
Physiology, Hygiene, Entomology, Plant Pathology. Course for 
Tropical Planters, Research. 
: SIDNEY SKINNER, M.A., 
Telephone: Kensington 899. ‘ Principal. 
BATTERSEA POLYTECHNIC. 
LONDON, S.W.11. 
Principal—Ropert H. PICKARD, D.Sc., F.R.S. 

Full-time day courses in Engineering (Mechanical, Civil and Electrical), 
Chemistry, Flour Milling, Physics, Mathematics. 
Students prepared for University of London Internal Degrees, A.I.C. 
Examination, and Polytechnic Diplomas. 
Evening courses in Engineering, Chemistry, Physics, Mathematics, and 
Music in preparation for Internal Degrees in the Faculties of Science, 
Engineering and Music. 
Library, Writing Room, Common Rooms, Refreshment Rooms, large 
Athletic Ground, etc. . 
Particulars on application to the PriNcIPAL. 
UNIVERSITY OF EDINBURGH. 
APPOINTMENTS COMMITTEE. 
The Committee keeps a REGISTER of MEMBERS of the University 
desiring to obtain educational, technical, commercial or other posts, and 
employers of all kinds are invited to make use of the Register in rega 
to vacancies. On notification of vacancies the Committee is willing 
either to furnish suitable candidates with the particulars, or, if desired, 
to recommend selected candidates for consideration. In every case 
the Committee will obtain so far as possible the testimony of Professors and 
Lecturers to whom candidates may be personally known. There is no 
commitment of any kind in making use of the Register, and no fee or 
commission is charged. 
Further particulais regarding the facilities offered by the Committee may 
be obtained from the Secretary— 
Mr. T. A. JOYNT, 
THE Op CoLLeGE, EDINBURGH, 
to whom all communications should be addressed. 
ee ——ee 
SHANGHAI MUNICIPAL COUNCIL. 
ASSISTANT TO CHIEF SANITATION CHEMIST. 
An ASSISTANT to the CHIEF SANITATION CHEMIST is 
required. Candidates must be between 27 and 32 years of age. They 
should be either graduates in science of a recognised University, er should 
produce evidence of equivalent academic training. They should be Fellows 
or Associates of the Institute of Chemistry and should have had special 
laboratory experience, in Bio-chemistry and 
training, followed by 
Bacteriology- 
Salary, Taels 500 per mensem, under a three years’ agreement, which is 
renewable at a higher salary in the event of satisfactory services. First- 
class passage is granted, with half- pay during voyage. Free medical 
attendance is provided, and the employee participates in the benefits of a 
Superannuation Fund. The present sterling exchange value of the Tael is 
Exchange is, however, subject to fluctuation, and the exchange 
35. 34. Hue ; 2 
be taken as a criterion of its purchasing value, 
value of the ‘I’'ael should not 
which is considerably lower. 
Particulars of the appointment and also full details as to the benefits 
enjoyed by Municipal Employees under their terms of Service, and as to 
potential costs of living, etc., may be obtained from the Council's Agents, 
and applications, with full information as to experience, etc., accompanied 
by copies of recent testimonials, should be forwarded to 
Messrs. JOHN POOK & CO., 
Agents for the Municipal Council of Shanghai, 
May 1923- 68 Fenchurch Street, London, E-C.3 
ee 
WIRELESS TELEGRAPHY—Experi- 
mental Officer required. Must have honours degree in physics from 
recognised University, with experience of experimental work in charge 
of a research section. Knowledge of rinciples governing the design of 
wireless valves important. Salary 4350 per annum plus civil service 
bonus, with advantages of Federated Superannuation System for 
Universities. 
War Office, Imperial House, Tothill Street, S.W.1. 
Apply-in writing to SECRETARY, Royal Engineer Board, — 

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