XCVili 
UNIVERSITY OF LONDON. 
BROWN ANIMAL SANATORY INSTITUTION. 
A Course of Five Public Lectures on “‘ THe Part PLAYED IN DISEASE 
sy WATER, SALTS AND OTHER SIMPLE SUBSTANCES” will be delivered by 
the Acting-Superintendent of the Institution, Dr. E. MELLANBY, on 
Mon., Dec, 4, Thurs., Dec. 7, Mon., Dec. 11, Thurs., Dec. 14, and Mon., 
Dec. 18, 1916, at 5.30 p.m., in the Theatre of the Royal College of Surgeons, 
Lincoln's Inn Fields, W.C. Admission free, without ticket. 
MEDICAL RESEARCH. 
DIRECTOR WANTED, Walter and Eliza Hall Institute of Research 
in Pathology and Medicine, Melbourne, Australia. Salary £800, with 
yearly premium of £75 for retirement in addition. Tenure, five years. 
Eligible for reappointment. Whole time. Applications by January 24, 
1917, to the AGENT-GENERAL Fok Vicroria, Aldwych, Strand, London, 
from whom full information can be obtained. 
BEDFORD COLLEGE FOR WOMEN 
(UNIVERSITY OF LONDON), 
REGENT’S PARK, N.W. 
DEPARTMENT OF CHEMISTRY. 
Applications are invited for the post of DEMONSTRATOR in 
CHEMISTRY. Salary £120 a year, rising to £150, non-resident. Six 
copies of applications, and of not more than three recent testimonials, should 
be sent not later than ‘Thursday, December 14, to the SECRETARY OF 
CounciL, from whom further partuculars may be obtained. 
NORTHAMPTON POLYTECHNIC INSTITUTE, 
LONDON, E.C. 
Applications are invited for the full-time appointment of DEMON- 
STRATOR inthe DEPARTMENT of ELECTRICAL ENGINEERING 
and APPLIED PHYSICS. Salary 4125 per annum. Applicants must be 
jneligible for Military Service. 
Particulars and forms of application can be obtained on application to 
R. MULLINEUX WALMSLEY, D.Sc., 
Principal. 
ROYAL SOCIETY. 
GOVERNMENT GRANT FOR SCIENTIFIC INVESTIGATIONS. 
Applications for the year 1917 must be received at the Offices of the 
Royal Society not later than January 1 next, and must be made on printed 
forms to be obtained from the Clerk to THE GOVERNMENT GRANT 
ComMiTTEE, Royal Society, Burlington House, London, W. 
RESEARCH CHEMISTS.—Messrs. Levinstein, 
Limited, have vacancies for well-qualified ORGANIC CHEMISTS in 
their Research Laboratories. Applicants must have had academical 
training, and preferably research experience.—Apply LEvinsTEIN, 
Limited, Blackley, Manchester. 
ASSISTANT, junior, man ineligible for the 
Army, or young lady, wanted, with some knowledge of Optical and 
Scientific Instruments.—Apply by letter, giving full particulars and 
salary required. to CHarLes BAKER 244 High Holborn, London, 
MASTER required to teach Nature Study and some English. For par- 
ticulars apply to HEapMasteR, Hulme Grammar School, Manchester. 
PROTOCATECHUIC ACID required for 
RESEARCH. If anyone has about 100. gr. to dispose of, 
will he with Dr. NieRENSTEIN, University of 
Bristol. 
LABORATORY CENTRIFUGAL MACHINE, hand 
or power, basket, copper, lead or vulcanite lined, required.—Box 204, 
clo Naturs  ffice. 
communicate 
WANTED fora Belgian Hospital, a Second- 
hand Microscope magnifying 5co times.--Reply Dean, Leigh Place, 
Brook Street, Holborn. 
NATURE 
[ NOVEMBER 30, 1916 
BIRKBECK COLLEGE, 
BREAMS BUILDINGS, CHANCERY LANE, E.C. 
COURSES OF STUDY (Day and Evening) for Degrees of the 
UNIVERSITY OF LONDON in the 
FACULTIES OF SCIENCE & ARTS 
(PASS AND HONOURS) 
Under RECOGNISED TEACHERS of the University. 
SCIENCE.—Chemistry, Physics, Mathematics (Pure and 
Applied), Botany, Zoology, Geology. 
ARTS.—Latin, Greek, English, Freneh, German, Italian, 
History, Geography, Logic, Economies, Mathematies (Pure 
and Applied). 
Evening Courses for the Degrees in Economics and Laws. 
POST-GRADUATE AND RESEARCH WORK. 
Day: Science, £17 10s.; Arts, £10 10s. 
SESSIONAL FEES Pox siten Science, Arts, or Economics, £5 5s. 
Prospectus post free, Calendar 3d. (by post sd.), from the Secretary. 
SOUTH-WESTERN POLYTECHNIC 
INSTITUTE, CHELSEA. 
Day and Evening Courses in the Faculty of Science and 
Engineering. 
Technical Chemical Courses. 
Pharmacy and Dispensing Courses. 
Particulars may be obtained on application to the Secretary 
(Room 44). SIDNEY SKINNER, M.A., Principal. 
Telephone: Western 899. 
13, CAMPDEN HILL SQUARE, W. 
MESSRS. BRODIE, TIMBS & CO. will 
Sell by Auction on the premises as above on THURSDAY, DEC. 7, 
1916, at two o'clock, a number of Photographic, Electrical and Scientific 
Instruments, including a Field Camera taking plates 22” x 18”, }-plate 
Camera by Newman & Gardia with Zeiss Lens, Optical Lantern and 
about 200 Slides mosily from Ganot’s Physics. Cinematograph Camera 
and Projector, Campbell's Inducto-meter Bridge and Accessories. 
Ayrton-Mather Galvanometer. Wimshurst Machine Optical Bench. 
Voltmeters, Transformers, Gassiot Cascade, Double Gyvo-cope, 
Refraction of Light Tank, Goniometer by tioltzapel, and 95 Volumes of 
**Nature” from commencement of publication to date, handsomely 
bound in leather and cloth. Catalogues of the Auctioneers, ‘* Weavers 
Hail,” 22, Basinghall street, E.C. 
LANTERN SLIDES.—20,000 in sets ; going 
up. Hiring Dept. : Travel, Lecture, Educational, Temperance. Illus- 
trated Songs and Hymns, &c. In sets, 3¢. plain, 6d. coloured; splendid 
chance. 
Glasgow. 
List sent on request.—Rakr, Lrp., 134p St. Vincent Street, 
HARLING’S NEW ‘“ACRIBO” 
SECTIONAL PAPER & PADS 
COMBINE 
ABSOLUTE ACCURACY—GOOD PAPER—LOW PRICE 
No. 1: inches and 8ths. No. 2: inches and roths. 
No. 3: centimetres and millimetres, 
Price of either, 50 sheets in a pad with cover, 2/6. 
NEW __LINE :—Sheets, printed on Thin Linen Bank, in 
same three scales, at 1/3 per quire. 
fe Narork says: “‘ The paper is excellent, the ruling is accurate, the 
pad is convenient, and the production is British throughout.” 
Write for specimens (post free) and compare the accuracy with 
any you have in use. 
re d 8 
W. H. HARLING, ™ matical, Drawing. and Surveying 
(Bstab. 1851) 47 FINSBURY PAVEMENT, LONDON, E.C. 
MICROSCOPES, TELESCOPES, 
SECOND-HAND 
SURVEYING AND DRAWING 
INSTRUMENTS, AND OTHER SCIENTIFIC APPARATUS AND 
ACCESSORIES BY ALL THE BEST MAKERS. 
338 HICH HOLBORN, CLARKSON’S 
(Opposite Gray’s Inn Road.) 
LONDON, W.C. 
