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NATURE 
[FEBRUARY 24, 1923 

UNIVERSITY OF LONDON. 
A Course of three Lectures on ‘‘ RECENT Work ON INBORN ERRORS OF 
Merapotism" will be given by Pror. Srr ARCHIBALD E, GARROD, 
K.C.M.G., F.R.S. (Regius Professor of Medicine, Oxford), in the RosErT 
Barnes Hatx at THE Rovat,Society oF MepIcINE, t WIMPOLE STREET, 
W.1, on WEDNESDAYS, February 28, March 7, and March r4, at 5.30 P.M. 
At the first Lecture the Chair will be taken by the Vice-CHANCELLOR oF 
THE University (Mr. H. J. Warinc, M.S., F.R.C S.). ADMISSION 
FREE, WITHOUT TICKET. Syllabus obtainable on application to the 
undersigned. 
EDWIN DELLER, Academic Registrar. 
UNIVERSITY OF LONDON. 
A course of four lectures on ‘‘Evectric Fietps in Atomic Puysics” 
will be given by Professor E. T. WHITTAKER, F.R.S. (Professor of 
Mathematics in the University of Edinburgh), at Universiry CoLtecr, 
Lonpon (Gower Street, W.C.1), on March 13, 15, 20,!and 22, 1923, at 
5:15 P.M. At the first lecture the Chair will be taken by Professor L. N. G. 
Fiton, F.R.S. (Goldsmid Professor of Applied Mathematics and Mechanics 
in the University. ADMISSION FREE, WITHOUT TICKET. 
Syllabus on application to the undersigned. 
EDWIN DELLER, Academic Registrar. 
MAGDALEN COLLEGE, OXFORD. 
The EDWARD CHAPMAN RESEARCH PRIZE will be offered for 
competition at the commencement of Summer Term, 1923, for a published 
piece of original research in some one of the following departments of Natural 
Science: Physics or Chemistry, including the Sciences of Astronomy, 
Meteorology and Mineralogy, or Geology, or the Biological Sciences of 
Zoology and Botany, whether treated from the Morphological, Palzonto- 
logical, Physiological, or Pathological point of view. 
‘The competition is restricted to members of Magdalen College who shall 
have been in residence for a period of two years, and at the date of closing 
the competition shall be under 30 years of age, and shall not have exceeded 
seven years from the date of matriculation. 
The prize is of the value of £20. 
Candidates must send in their competing papers or memoirs not later than 
May 1, 1923, to Mr. R. T. GUNTHER, MAGDALEN COLLEGE, 
from whom further particulars can be obtained. 
PRIFYSGOL CYMRU. 
UNIVERSITY OF WALES. 
THREE FELLOWSHIPS, tenable for two years, may be awarded 
in 1923 to Graduates of the University of Wales. The value of each Fellow- 
ship will be £200 per annum. Applications from Candidates for the 
Fellowships must be received before June 1, 1923, by the ReGisTRaAr, 
University Registry, Cathays Park, Cardiff, from whom further information 
with regard to the Fellowships may be obtained. 
DERBYSHIRE. 
MIXED SECONDARY SCHOOL. 
WANTED, in September, a MISTRESS for Natural History, Zoology, 
and B Salary according to Burnham Scale. Non-resident post. 




totany. 
Furure Carrer Association, Roland House, Old Brompton Road, S. W.7. 
BEIT FELLOWSHIPS FOR SCIENTIFIC RESEARCH. 
NOTICE is hereby given that the TENTH ELECTION OF 
FELLOWS will take place on or about July 16, 1923. 
Applications must be received on or before April 19, 1923. 
Forms of application and all information may be obtained by letter, 
addressed to the Recror, Imperial College, South Kensington, London, 
S.W.7, England. 
THE EXPERIMENTAL DEPARTMENT OF THE 
FINE COTTON SPINNERS & DOUBLERS ASSOCIATION 
Invites application for the two following posts: 
INSTRUMENT MAKER, with good general experience of high-class 
work, preferably used to experimental laboratory apparatus (electrical 
and physical). Wages about £4 weekly. 
PHYSICS LABORATORY ASSISTANT, of Inter. BSc. or equivalent 
standard, must be specially interested in physics and keen to pursue 
training for research. Initial wage £3 weekly. 


Hostel accommodation available. 
Applications should be addressed to Dr. W. L. Batts, Rock Bank, 
Bollington, nr. Macclesfield. 
TO TECHNICAL CHEMISTS AND 
Bacteriologists, Owners of Chemical Works having acquired favourable 
Process Licence invite technical and financial co-operation for establish- 
ing £20,000 unit plant for approved bio-chemical process showing over 
1oo per cent profit under present conditions. In first instance it is 
necessary to state in confidence, qualifications, experience, and capital 
available for approved enterprise. Box 1872/17, c/o NATURE Office. 
a EOE ETI a 
M.Sc., PHYSICS, wishes to obtain Research 
Post. Iixperience in Research and Demonstrating. Box No. 58, 
c/o Nature Office. 



UNIVERSITY OF SYDNEY, 
NEW SOUTH WALES. 
PROFESSORSHIP OF PHYSICS. 
The Senate of the University of Sydney invites application for the 
CHAIR of PHYSICS, to which is attached a salary of £1too per annum 
together with rights to a pension of £400 per annum on certain conditions. 
The Professor appointed will be expected to enter on his duties on August 1, 
1923; 4150 will be allowed for travelling expenses from Europe. 
Further details concerning the appointment may be obtained on written 
request to THe AGENT-GENERAL FOR New SourH Wates, AUSTRALIA 
House, Stranp, Lonpon, W.C.2, to whom applications for the position, in 
sextuplicate, accompanied by copies of testimonials (if any), should be sent 
so as to reach him not later than Wednesday, FEBRUARY 28, 1923. There is 
no special form of application, All correspondence addressed to the Agent- 
General in connection with the appointment should be marked on the outside 
of the envelope ‘‘ University of Sydney.” 
T. A. COGHLAN, 
London, January 30, 1923. Agent-General for New South Wales, 

IF YOU are Interested in Chemical or 
Technical Books and Journals, let us send you our Catalogues—both 
new and second-hand, We are in the best position to meet your re- 
quirements, and will do so on the best terms. 
Wittiam Bryce, 
Scientific Bookseller, 
54 and 54a Lothian Street, EDINBURGH. 
W. WATSON & SONS require the services 
ofa JUNIOR OPTICAL COMPUTOR, with some experience of, and 
competent to test, instruments and lens systems. Arrangements could 
be made for attending at lectures, if desired. Reply in writing, stating 
age and experience, to 313 HiGH Ho1.porn, W.C. 
STUDENT'S MICROSCOPE FOR SALE 
—Crouch, coarse and fine focussing, rotating stage, 1” and }” objectives, 
2 eyepieces, mahogany case, good condition. £5. B. H. Knicur, 
Engineering Dept., University College, W.C.1. 
SPECIAL MICROSCOPICAL SLIDE.— 
Radium. Perpetually giving off numerous flashes of light. Post free, 
2s. 3d. Two slides, 4s. 3d. Dartaston, 31 Freer Road, Birchfield, 
Birmingham. : 
THE HANDBOOK OF | : 
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By W. P. THOMPSON, F.C.S., M.I.Mech.E., Etc., 
Chartered Patent Agent of Liverpool. 
Entirely revised and rewritten 1920, 157 pages. Crown Octavo. 
All Countries, 6s. British Law only, is. 
“Should prove a very valuable and trustworthy guide to would-be 
patentees."—Nature. 
Lonpon : STEVENS AND Sons, LIMITED. 
MESSRS. SOTHERAN 
have now opened a Scientific Department on the first floor of 
their Strand House, where a selection of their large stock in 
modern, as well as old and rare, works on Exact and Applied 
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They would also call attention to their facilities in getting sets 
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out-of-print books they may not have in stock already. 
HENRY SOTHERAN & CO., 140 STRAND, W.C.2, & 43 PICCADILLY, W.1, LONDON. 
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Telephones: 1787 Hop and 3117 Hop, 3 

