



JUNE 30, 1923] 
WALES AND MONMOUTHSHIRE. 
LEG PRIFATHROFAOL DEHEUDIR CYMRU A MYNWY. 
The Council of the College invites applications for the post of ASSISTANT 
LECTURER and DEMONSTRATOR in PHYSICS. 
The Salary will be £300 per annum. " 
Further particulars may be obtained from the undersigned by whom three 
copies of applications with testimonials (which need not be printed) must be 
received on or before July 2, 1923. ; 
D. J. A. BROWN, Registrar. 
University College, 
Cardiff, June 7, 1923. 
LONDON SCHOOL OF ECONOMICS AND 
POLITICAL SCIENCE 
(UNIVERSITY OF LONDON). 
LECTURER IN ECONOMICS (TRANSPORT). 
Applications are invited for the post of LECTURER in ECONOMICS 
: with SPECIAL REFERENCE TO TRANSPORT. Salary £400 
to £500 according to qualifications, to date from October 1, 1923. 
Full particulars may be obtained from, and applications and testimonials 
must be received not later than Wednesday, July 11, by THe Secretary, 
London School of Economics and Political Science, Houghton Street, 
Aldwych, London, W.C.2. 
UNIVERSITY OF MELBOURNE. 
4 sr ications are invited for the position of LECTURER and 
DEMONSTRATOR in NATURAL PHILOSOPHY at the above 
University. 
Conditions of Appointment and full information are obtainable upon 
application to the AGenT-GENERAL FoR Vicroria, Melbourne Place, 
Strand, London, W.C.2, with whom applications should be lodged in tripli- 
cate on or before July 16, 1923. 
SALARY— {600 per annum, rising to £750. 
DUTIES COMMENCE—March 1, 1924. 
CANTERBURY COLLEGE, 
CHRISTCHURCH, NEW ZEALAND. 
Applications are invited for the position of PROFESSOR of MATHE- 
Ze mAtics at the above College at a salary of £800 per annum. Full 
particulars and forms of application obtainable by sending stamped foolscap 
envelope to the HicH Commissioner FoR New ZEALAND, 415 Strand, 
1 W.C.2, by whom completed applications will be received up to July 31, 



1923. 

UNIVERSITY OF DURHAM. 
ARMSTRONG COLLEGE, NEWCASTLE-UPON-TYNE. 
LECTURESHIP IN AGRICULTURE. 
The Council of Armstrong College invites applications for a LECTURE- 
SHIP asabove. Salary £250 pa annum. Duties to commence October 1, 
1923. Special knowledge of Dairying required. Further particulars on 
application to 
J. Y. T. GREIG, 
Registrar, Armstrong College. 
r UNIVERSITY OF LEEDS. 
F CHAIR OF MINING. 
_ The PROFESSORSHIP of MINING in the University will fall 
vacant at the end of the present session upon the resignation of Professor 
Granville Poole. A new appointment, taking effect on October 1, 1923, 
will be made in due course, The salary attached to this appointment will 
- be £1000 a year. Further information may be obtained from THe 
Recistrar, The University, Leeds. Inquiries should reach him not later 
than July 9. 
THE UNIVERSITY OF LEEDS. 
“4 DEPARTMENT OF AGRICULTURE. 
__ Applications are invited for the appointment of TEMPORARY ASSIST- 
ANT LECTURER in AGRICULTURAL CHEMISTRY. Salary £300 


per annum. Further particulars may be obtained from THe REGISTRAR, 
‘ Phe University, Leeds, who will receive applications for the appointment 
up to July 14, 1923. 
CHELSEA POLYTECHNIC. 
Full-time TEACHER (WOMAN) of PHYSIOLOGY required in Sep- 
tember. Conditions and application form may be obtained by sending a 
_ stamped addressed foolscap envelope to THe Secretary, Chelsea Poly- 
; ; technic, Manresa Road, Chelsea, S.W.3. 
a ROCK ANALYSES. 
_ W. H. HERDSMAN, 141 Bath Street, Glasgow, 40 years’ analytical 
experience. 
A eference, Mr. G. W. Tyrrett, Glasgow University, and others. 
\ 


NA TURE cCcili 
UNI VERSITY COLLEGE OF SOUTH | PARTICULARS OF VACANCIES FOR DEMONSTRATORS 
AT THE 
WEST INDIAN AGRICULTURAL COLLECE, TRINIDAD. 
Appointments will shortly be made of three DEMONSTRATORS, one 
in Botany, one-in Chemistry, and one in Entomology. The salaries will be 
4350 a year, rising by annual increments of £25 to £400. The Demonstrators 
will be required to give lectures to the students, to supervise their laboratory 
work, and to assist the Professors. There will be some opportunity for 
research. A candidate should hold a good Honours Degree or equivalent 
eneral qualification and must have special knowledge of the particular 
ranch in which he is a candidate. In the case of the Demonstrator in 
Botany, an acquaintance with cytology is desirable. A free passage will be 
provided for the selected candidate. The candidates selected will be on 
probation for one year in the first instance, except in the case of candidates 
already holding permanent and pensionable appointments. A 6 per cent. de- 
duction from salary will be made for purposes of pension and insurance. Upon 
certain conditions the College will contribute an equal amount in addition 
tosalary, The College is not a Government institution, and the selection of 
candidates will be made by the Governing Body of the College. Candidates 
should apply in writing for the necessary forms of application to the 
Assistant Private SecreTary (Appointments), Colonial Office, Downing 
Street. Completed applications sioald reach him not later than July 14. 
er 
DEPARTMENT oF SCIENTIFIC ano INDUSTRIAL RESEARCH. 
The Department requires the services of an officer to act as EXPERT in 
TIMBER MECHANICS to the FOREST PRODUCTS RESEARCH 
BOARD. 
Candidates must possess high general scientific qualifications and a wide 
€xperience in timber testing. 
The Department would be prepared to offer a salary of the order of £1000 
(inclusive) per annum to a suitably qualified candidate. 
Applications giving full particulars of qualifications and experience 
Should be addressed to the Secrerary, Department of Scientific and 
Industrial Research, 16 Old Queen Street, Westminster, London, S.W.1, 
and should reach that address not later than September 15, 1923. 
THE UNIVERSITY OF SHEFFIELD. 
The Council are about to appoint an ASSISTANT LECTURER and 
TUTOR in MATHEMATICS, Salary £350 per annum. Applications 
should be received by the undersigned, from whom further particulars may 
be obtained, by July 23. : 

W. M. GIBBONS, Registrar. 
WANTED—Complete Second-hand Copy of 
Engler and Prantl's “‘ Natiirlichen Pflanzenfamilien,” bound, in rood 
condition. Details and terms to Heap, Biological Department, Uni- 
versity College, Swansea. 
SCIENCE PROGRESS 
A QUARTERLY RECORD OF SCIENTIFIC 
THOUGHT, WORK, AND AFFAIRS 
Editor: Sir RONALD ROSS, K.C.B., F.R.S., &c. 
JULY 1923. 
Recent Advances in Science: Pure Mathematics. By 
F. P. White, M.A. Meteorology. By E. V. Newnham, B.Sc. 
Physical Chemistry. By W. E, Garner, M.Sc. Biochemistry. 
By R. Keith Cannan, M.Sc. Geology. By G. W. Tyrrell, 
A.R.C.Sc. Plant Physiology. By W. Stiles, Sc.D. entone 
logy. By A. G. Thacker, A-R.C.S. Medicine. By R. M. 
Wilson, Ch. B. 
Articles: Indeterminate Equations of the Third Degree. By 
L. J. Mordell. ‘‘ Catalysis." By K. C. Bailey, M.A., D.Se. 
Some Chemists of Islam. By E. J. Holmyard, B.A., M.R.A.S. 
The Present Position of the Darwinian Theory. By E. W. 
MacBride, F.R.S. The Evolution of the Functions of Blood. 
By N. J. T. M. Needham, B.A. The Future Moulded by 
Science. By M. Sembat, with Note by Sir J. G. Frazer. 
By Col. W. G. 






6s. net. 

172 pages. 










Popular Science: Politics and Sanitation. 
King, C.1.E., I.M.S. 
Notes: Sir James Dewar. 

By Sir J. Crichton-Browne, F.R.S. 
Synthetic Relativity. By J. Haldane, M.A., LL.B. 
Alcoholism Experiments in the Lower Animals. By J. B. G. 
Dr. Kammerer in Cambridge. By A. G. Thacker, A.R.C.S. 
Notes and News. 





By F. J. Thorpe, 

Essay: Oiliness and Low-speed Lubrication. 
B.Se. 
Reviews of 24 Books. 
Books Received. 




JOHN MURRAY, Albemarle St., LONDON, W.1. 


