cCil 

NOTICE. 
NATURE of next week—July 7— 
will begin a New Volume. 
The number will contain a 16-page 
Supplement, by Prof. Niels Bohr, 
entitled “The Structure of the 
Atom.” 
ST. MARTIN’S STREET, LONDON, W.C.2. 

TECHNICAL COLLEGE, 
BRADFORD. 
DAY COURSES. 
FULL-TIME (DAY) COURSES extending over three or four years, 
and leading to the Diploma of the College, are arranged in the following 
Departments : 
TEXTILE INDUSTRIES. 
CHEMISTRY. 
DYEING. 
MECHANICAL ENGINEERING. 
CIVIL ENGINEERING, ARCHITECTURE, and 
BUILDING. 
ELECTRICAL ENGINEERING. 
BIOLOGY. 
These Courses are designed to meet the needs of Students wishing to 
present themselves for the Degree Examinations of the London University. 
SPECIAL FACILITIES ARE AVAILABLE FOR ADVANCED 
STUDY AND RESEARCH. 
Further particulars and prospectuses may be obtained on application to 
the Princirat, Technical College, Bradford. 

FINSBURY TECHNICAL COLLEGE, 
LEONARD STREET, CITY ROAD, E.C.2. 
Civil and Mechanical Engineering—Professor H. P. PHILPoT, 
A.M. Inst.C.E. 
Electrical Engineering—Professor W. H. Eccies, D.Sc., F.R.S. 
Chemistry—Professor A. G. Hate, F.I.C. 
The College provides practical scientific training for students who desire 
to become Civil, Mechanical, or Electrical Engineers, or Chemists. 
Candidates are required to pass an Entrance Examination in Mathematics 
and English, but the Matriculation Certificate of any British University, 
and certain other qualifications, are accepted in lieu of it. The next 
Entrance Examination will be held on Tuesday, September 18. Applica- 
tions for admission should be forwarded to the College on forms to be 
obtained from the Rrcisrrax. The Programme of the College may be 
had on application. 

ST. BARTHOLOMEW’S MEDICAL 
COLLEGE. 
DEMONSTRATOR OF BIOLOGY. 
The post of DEMONSTRATOR of BIOLOGY will be vacant shortly. 
Particulars may be obtained from the lean of the Medical College, St. 
Bartholomew's Hospital, E.C., to whom applications and testimonials 
should be sent before July 20, 1923. 

UNIVERSITY OF LONDON, 
KING’S COLLEGE 
The Delegacy require the services of an ASSISTANT LECTURER in 
INORGANIC CHEMISTRY. Salary £300 per annum. Teaching and 
research experience desirable. Facilities will be given for research. 
Applications, in duplicate, together with two copies of not more than 
three recent testimomials should be sent not later than July 12 to the 
SEcRETAKY, King’s College, Strand, W.C.2, from whom further particulars 
may be obtained. 
NATURE 

* [JUNE 30, 1923 
EAST LONDON COLLEGE 
(UNIVERSITY OF LONDON), 
Principal—J. L. S. HATTON, M.A. 
PASS AND HONOURS COURSES IN THE 
FACULTIES OF ARTS, 
SCIENCE AND ENGINEERING. 
FIRST YEAR MEDICAL COURSE. 
POST GRADUATE AND RESEARCH WORK. 
Composition Fee, £22: 2s. per annum. 

EVENING COURSES, M.A. FRENCH, M.A. & M.Sc. 
MATHEMATICS, 
RESEARCH WORK IN EXPERIMENTAL SUBJECTS, 
Prospectus, post free. E. J. WIGNALL, Registrar. 
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.r4. 


THE UNIVERSITY OF MANCHESTER. 
Applications are invited for the SIR CLEMENT ROYDS MEMORIAL 
SCHOLARSHIP in CHEMISTRY of the value of £300. The Scholar- 
ship is for the encouragement of advanced study and research in Chemistry 
in the Faculty of Science of the University, and is open to British subjects 
of British descent, born in or inhabitants of the County of Lancaster, pre- 
ference being given to the County Borough of Rochdale. 
Further particulars may be obtained in the University Calendar, or by 
application to the INTERNAL REGISTRAR. Z 
Applications must be sent to the Internal Registrar not later than July 14. 

TO SCIENTISTS AND RESEARCH STUDENTS. 
THE INTERNATIONAL BIBLIOGRAPHICAL SERVICE BUREAU, 
employed by British Government Departments, University Professors, ete., 
supplies complete Continental and American bibliographies on any scientific, 
literary, or medical subject. Chemical work a speciality. Extracts made. 
Headquarters: Vienna. eg at representative; ‘‘ ALEXANDRIAN,” IA 
Longridge Road, Earl's Court, S.W.s. 

TECHNICAL INFORMATION from 
World-wide Sources. Write to us if you require Information or 
Research of any kind. We have a large staff of Experts, and Unique 
Facilities for procuring information. Bibliographies, Abstracts from 
Foreign Periodicals, Mathematical Work; Translations from all 
languages, Technical Typing. Department A, THe Lonpon RE- 
SEARCH AND INFORMATION BuReEAU, 5 Tavistock Square, W.C.r1. 
Museum 7686. 
KING’S COLLEGE FOR WOMEN. 
HOUSEHOLD AND SOCIAL SCIENCE DEPARTMENT, 
CAMPDEN HILL, W.8. 
The Executive Committee invite applications for the post of WARDEN. 
Salary, £650 per annum with board and residence. Particulars as to duties, 
etc., may be obtained from the Secretary. Completed applications should 
be addressed to the CHAIRMAN OF THE COMMITTEE and should reach him 
on or before Tuesday, July 3. 


THE BRITISH COTTON INDUSTRY 
RESEARCH ASSOCIATION. 
The Council of the Associations invites applications for the position of 
HEAD of the BOTANICAL DEPARTMENT in the Shirley Institute 
shortly to become vacant. The salary offered is from £700-£1000, according 
to qualifications. Applications, accompanied by the names of two referees, 
must be received not later than July 21, 1923, and should be addressed to 
the Drrecrox, Shirley Institute, Didsbury, Manchester, from whom any 
further particulars may be obtained. 

PHIL. MAG.—For Sale, 19 recent issues 
incl. 1922 complete. Cost £6:15s. Best offer accepted. Box No. 94, 
clo NATURE Office. 
. 
