Ixxiv 
NATURE 
[NovEMBER 9, 1916 
SWINEY LECTURES on GEOLOGY, 1916. 
UNDER THE DIRECTION OF THE TRUSTERS OF THE BriTisH Museum. 
A Course of Twelve Lectures on ‘‘ The Mineral Resources of Europe” 
will be delivered by Dr. Joun S. Frerr, F.R.S., at the ROVAL SOCIETY 
OF ARTS, 18 and 19 JOHN STREET, ADELPHI, W.C. (by permission 
of the Council of the Society). 
The Lectvores, which will be illustrated by Lantern Slides, will be given 
on Tuesdays, ‘thu sdays, and Fridays, at 5 p.m., beginning Tuesday, 
November 14, and ending Friday, December 8. Apmission FREE. 
British Museum (Natural History), 
Cromwell Road, London, S.W. 
GRESHAM LECTURES. 
The Gresham Lecturer on Astronomy, Mr. ARTHUR R. Hinks, M.A., 
F.R.A.S., will deliver a Course of Four Lectures on ‘THe EARTH AND 
THE UNIVERSE,” on Tuesday, Wednesday, Thursday, and Friday, Novem- 
ber 14, 15, 16, and 17, at 6 p.m., at Gresham College, Basinghall Street, 
E.C. Admission Free. 
CHEMICAL SOCIETY RESEARCH FUND. 
A meeting of the Research Fund Committee will be held in December 
next. Applications for grants, to be made on forms which can be obtained 
from the AssISTANT SECRETARY, Chemical Society, Burlington House, W., 
iust be received on, or before, Friday, December 8, 1916. 
All persons who received grants in December, 1915, or in December of 
any previous year, whose accounts have not been declared closed by the 
Council, are reminded that reports must be returned by Friday, 
December tr. 
The Council wish to draw attention to the fact that the income arising 
from the donation of the Worshipful Company of Goldsmiths is to be more 
or less especially devoted to the encouragement of research in inorganic and 
metallurgical chemistry. Furthermore, that the income due to the sum 
accruing from the Perkin Memorial Fund is to be applied to investigations 
relating to problems connected with the coal-tar and allied industries. 
ASTLEY COOPER PRIZE. 
The next Triennial Prize of Three Hundred Pounds, under the will of the 
late Sir Astley Cooper, Bart., will be awarded to the author of the best 
Essay or Treatise on ‘Gunshot Wounds of the Lungs and Pleura.” 
The competition is open to everyone except the staffs of Guy's and St. 
Thomas's Hospitals and their relations ; |ut the essay must not be the pro- 
duction of two or more authors. Candidates are informed that their essays, 
written in English, must be sent to Guy's Hospital, addressed to the 
Physicians and Surgeons, on or before January 1, 1919. Each essay or 
treatise must be distinguished by a motto, and be accompanied by a sealed 
envelope containing the name and address of the writer; none of the 
enyelopes will be opened except that which accompanies the successful 
- treatise. 
The Trustees will entertain the question of the publication of the successful 
essay in the “‘Guy’s Hospital Reports.” This will not, of itself, preclude 
the successful competitor from publishing his essay elsewhere upon obtaining 
permission. 
For particulars regarding the other conditions to be complied with, appli- 
cation should be made to C. H, FacGr, M.S., Guy's Hospital, London, S.E, 
COUNTY BOROUGH OF HUDDERS- 
FIELD TECHNICAL COLLEGE. 
Principal: J. F. Hupson, M.A., B.Sc. 
DEPARTMENT OF COAL-TAR COLOUR CHEMISTRY. 
“BRITISH DYES” RESEARCH SCHOLARSHIPS. 
The Governors invite applications for two Scholarships of the value of 
475 each and tenable for one year in the first instance. 
The object of these Scholarships is to encourage and afford greater facili- 
ties for research upon problems in connection with the Coal-Tar Colour In- 
dustry in Great Britain. The Kesearch is to be carried out in the 
Department of Coal-Tar Colour Chemistry of the Technical College, 
Huddersfield. 
Full particulars may be obtained on application. 
T. THORP, Secretary. 
AGRA COLLEGE, 
AGRA, INDIA. 
Applications are invited for the PROFESSORSHIP OF 
BIOLOGY at AGRA COLLEGE, UNITED PROVINCES, 
INDIA. Salary t's. 500 per mensem (£400 per annum), with 
free quarters and Provident Fund benefits. Particulars may be 
obtained from Professor GREGG Witson, M.A., D.Se., Queen’s 
University, Belfast. 
LABORATORY ASSISTANT WANTED 
for LANCING COLLEGE. Some experience in a chemical labora- 
tory desirable. Wages 25s. per week.—Apply at once to K. L. TREBLE, 
Lancing College, Shoreham. by-Sea. 
LURGAN URBAN DISTRICT. 
WANTED, PRINCIPAL AND SECRETARY FOR 
TECHNICAL SCHOOL. 
The Lurgan Technical Instruction Committee require the services of a 
PRINCIPAL and SECRETARY (to devote his whole time to the work 
of the School), possessing qualifications in Technology recognised by the © 
Department of Agriculture and Technical Instruction, and having had 
experience of the working of Technical Schools. Salary £200 per annum. 
Applications, stating age, &c., will be received by the undersigned not 
later than 12 o'clock noon on Friday, November 24, 1016. 
Canvassing by or on behalf of candidates will be deemed a disqualifi- 
cation. 
J. W. POLLOCK, 4 
Technical School, f.urgan, Acting Secretary. 
October 24, 1916. 
AN ASSISTANT CHEMIST with expe- 
rience in the analysis of minerals and the assay of ores is required 
temporarily in a public laboratory in London. Salary £150 to com- 
mence. Applicants must be ineligible for military service. Write, 
giving usual particulars, to ‘‘ CHEMIST,” c/o STREET'S, 30 Cornhill, E. Cc 
FOR SALE.—OBSERVATORY & EQUA- 
TORIAL of the late Daviv G. Simpson, late F.R.A.S. Dome 
rr ft. 6in. inside diameter. Telescope 44-in. Wray, 6 ft. f.l. with 
driving clock, circles divided on silver, Thorpe spectroscope, eye- 
pieces, &c. ° For particulars apply by letter to Mrs. Simpson, ‘* Rose- 
field,” Widmore Road, Bromley, Kent. 
Edueational, Medical, all other 
BOOKS : subjects, and for all Exams. 
SECOND-HAND AT HALF PRICES: New Books at Discount Prices. 
CATALOGUES FREE. State Wants. Books sent on approva’. 
BOOKS BOUGHT: Best Prices Given. 
W. & C, FOYLE, 121-123 Charing Cross Road, London, 
Books on Seientifie, Technical, 
SECOND-HAND MICROSCOPES, 
Baker ‘“‘D.P.H.,’’ No, 1, mechanical stage and substage, 
2/3, «/6, and 1/12 oil imm. objectives, by Bausch & Lomb, 
triple nosepiece, 2 eyepieces, achromatic Abbe condenser ... £18 18 
Leitz “PF,” Nos. 3, 7, & 1/r2 fluorite oil imm, objectives, triple 
nosepiece, 2 eyepieces, spiral Abbe and iris; all by Leitz £14 15 
Beck ‘* Popular’’ Binocular, 2-in., 1-1n., and $-in. objec- 
tives, 2 pairs of eyepieces, and polariser —... £8 15 
Leitz Ia, Nos. 3 and 7 Reichert objectives, double nosepiece, 
eyepiece, Abbe andiris ... £7 15 
Leitz IIb, A and D Zeiss objectives, double nosepiece, eye- 
piece ... aa «. £6 15 
Beck ‘* Economic,” rin, and } objectives, 2 eyepieces «w. £6 10 
Beck ‘' Star,” 1-in., 4 objectives, eyepiece... vee Ed EG 
Dissecting Stand, Zeiss erecting eyepiece, 1-in. objective ove 
eooo lo 8 8 8 
WANTED: 
MICROSCOPES and ACCESSORIES 
by Leading Makers. 
CLARKSON’S SECOND-HAND OPTICAL MART, 
3388 HIGH HOLBORN, LONDON. (Opposite Gray’s Inn Road.) 
SPINTHARISCOPE 
for showing the Scintillations of 
RADIUM 
(As devised by Sir Witt1am Crooxgs). 
Price 17/6. Post free anywhere. 
The scintillations seen in this instrument are 
from Pure Radium Bromide of highest 
known activity, and are brighter and more 
plentiful than those produced from pitchblende 
or any other radio-active substance. 
A. C. COSSOR, Ltd., 
59-61 Clerkenwell Road, London. 
