cliv 
NATURE 
[Marcu 18, 1897 
ROYAL INSTITUTION OF GREAT 
BRITAIN, 
ALBEMARLE STREET, PICCADILLY, W. 
Professor W. Boyp Dawkins... M.A., F.R.S., F.S.A., will, on THURS- | 
DAY MARCH 2s, at Three o'clock, beg a Course of Three 
Lectures on ‘THE RELATION OF GEOLOGY TO HISTORY.” 
(1) The Incoming of Man. (2) The Frontier of History in Britain. 
Roman Britain. 
next, 
Subscription to this Course, Half-a-Guinea; to all the Courses in the | 
Season, Two Guineas. 
BIRKBECK INSTITUTION, 
BREAM’S BUILDINGS, CHANCERY LANE, E.C. 
Day CLASSES. 
LONDON UNIVERSITY and SCHOLARSHIP EXAMINATIONS. 
BIOLOGY.—MATHEMATICS.—PHYSICS. 
CLASSES are held dai/y in the above Subjects, conducted by experienced 
Teachers and Graduates. 
Particulars on application. 
TECHNOLOGICAL EXAMINATIONS, | 
1897.-CITY AND 
Application Forms for the E 
GUILDS OF LONDON INSTITUTE.— 
ninations in Technology to be held on 
April 24, May 1, 3, 4, 5, 6, 7 , can be obtained by applying, not 
later than March to the Examinations Department, City and 
Guilds of London Institute, Exhibition Road, London, S.W. 
TECHNOLOGICAL EXAMINATIONS, 
1897,—CITY AND GUILDS OF LONDON INSTITUTE.— 
Candidates in ‘Technology not being students of any registered 
class, desirous of sitting for the Institute's Examinations, should apply 
at once to the Secretary of the nearest Technical or Science School. 
Failing to arrange with any Local Secretary, Candidates should apply, 
not later than April 17, to the Examinations Department, City and 
Guilds of London Institute, Exhibition Road, London, S.W. 
PROFESSOR of NATURAL SCIENCE 
is required for the Thomason Engineering College, Rurki, in the 
North-West Provinces of India. He should be a practical Electrical 
Engineer, and qualified to lecture in and teach Electricity, Magnetism, 
Heat, Sound, Light, and the Elements of Chemistry, Geology, and 
Mineralogy. He should understand Telegraph Engineering. The 
Salary will be Rupees 500 a month in the first year, rising by Rs. 50 
a year to Rs. 700. If retained on termination of five years’ agreement, 
Salary Rs. 750 a month, rising to Rs. rooo, with benefit of Leave and 
Pension Rules from date of first appointment. Applications should be 
addressed to the Secrerary Judicial and Public Department, India 
Office, London, not later than the end of March. 
A. GODLEY, Under Secretary of State for India. 
India Office, February 25, 1897. 
INSTRUCTION IN 
PURE CULTIVATION OF YEAST, 
According to HANSEN'S Methods. 
Courses for Beginners, as well as for Advanced Students, in Physiology 
and Technology of Fermentations—Biological Analysis of Yeast. 
Manuals:—E. Chr. Hansen: ‘‘ Practical Studies in Fermentation.” 
London (Spon), T8096. Ifred Jérgensen; ‘* Micro-organisms and Fermen- 
tation.” London(F. W. Lyon), 1893. 
Further Particulars on Application to the Director, ALFRED JORGENSEN, 
The Laboratory, Copenhagen, V. 
THE ELECTRICAL 
AND 
GENERAL ENGINEERING COLLEGE, 
AND 
SCHOOL OF SCIENCE. 
PENYWERN HOUSE, 2 and 4, PENYWERN ROAD, 
EARL’S COURT, S.W. 
PrincipaLt—G. W. pE TUNZELMANN, B.Sc., M.I.E.E. 
Senror-Instructor—C, CAPITO, M.I.E.E., M.1I.M E. 
Laboratories, Dynamo Room, Steam Engine, Engineering Workshop 
with Machine Tools, Pattern Shop, &c. 
The College provides a Training for Electrical, Mechanical, Civil, and 
Mining Engineers, for Science Students in Mathematics, Physics, Chem- 
istry, Biology, Geology, and Mineralogy, and Preliminary Training for 
Students entering Cooper's Hill and the Central Institution. 
93 
MANUFACTURER OF 
ELECTRICAL & PHYSICAL 
INSTRUMENTS, 
44 Hatton Garden, London. 
Catalogues Free. 
(3) 
| Sale bp Huction. 
MONDAY NEXT. 
VALUABLE BRITISH AND EXOTIC LEPIDOPTERA 
| MR. J. C. STEVENS will Sell by Auction 
at his Great Rooms, 38 King Street, Covent Garden, on MONDAY 
next, MARCH 22, at Half-past 12 precisely, a choice Collection 
of TROPICAL BUTTERFLIES, the property of a gentleman going 
| abroad; also Collections of BRITISH LEPIDOPTERA, including 
many Rarities, Cabinets, &e. 
On view the Saturday prior, 12 till 3, and Morning of Sale, and Catalogues 
had. 
THE ELECTRICAL G0., Lo. 
COMPLETE OUTFITS 
FOR 
RADIOGRAPHY. 
Specially suitable for Scientific Men, Surgeons and Physicians, 
Direct Investigations, or Photography. 
RONTGEN TUBES, with 3 Electrodes, available for any 
length of Spark, 20s. each. 
COILS. TRANSFORMERS. 
| FLUORESCENT SCREENS, Double Coated Platino- 
Cyanide of Barium. 
ACCUMULATORS. CELLS. 
Acknowledged by all who have tried them to be unsurpassed 
for effect. Inspection invited of Apparatus at work at 
122-124 CHARING CROSS ROAD, LONDON, W.C. 
az Send for Complete Priced Catalogue. 
JAMES WOOLLEY, SONS & CO., LTD. 
Manufacturers and Dealers in every Description of 
CHEMICAL AND J PHYSICAL APPARATUS 
: a 
> 3 = 
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ane 
PECIAL TERMS TO TECHNICAL A 
BOARD SCHOOLS. 
MANCHESTER, 
