90 
additions have been made to the equipment of gene- 
rators, measuring instruments, and photometers. In 
the metallurgical department the equipment of electric 
and gas furnaces and pyrometers has been augmented, 
A new departure is being made in the section of tele- 
graphy and telephony in the arrangement of special 
classes for workmen on the maintenance and con- 
structional staff of the Post Office, and also for boy 
messengers. The latter classes are intended to meet 
the difficulty of the blind-alley occupation into which 
the Post Office plunges these boys, and the experi- 
ment, which is of public interest, will be watched 
sympathetically. 
THE prospectus of university courses in the Muni- 
cipal School of Technology, Manchester, for the 
session 1913-14, is now available. It will be remem- 
bered that university work in Manchester was co- 
ordinated in 1905 by the establishment of a faculty of 
technology in the University of Manchester, with the 
principal of the Municipal School as dean of the 
faculty and with the heads of the mechanical and elec- 
trical engineering, of the applied chemistry, and of 
the architecture departments of the school as pro- 
fessors of the University. The University courses pro- 
vided by the School of Technology lead to the degrees 
of bachelor and master of technical science (B.Sc.Tech. 
and M.Sc.Tech.). These degrees may be taken in 
the following divisions of technology :—Mechanical 
engineering, electrical engineering, sanitary engineer- 
ing, applied chemistry, mining, architecture, and 
textile industries. In addition, the school provides 
courses of post-graduate and specialised study and 
research, in numerous branches of technical science, 
for a fourth year, to students who have completed the 
three years’ course for a degree or certificate success- 
fully, or are otherwise deemed competent to ente- 
upon them. The School of Technology has also pub-. 
lished departmental prospectuses, of the part-time even- 
ing courses, and the apprentices’ day courses to be 
held at the school during the coming session. The 
number of evening students has reached the limit of 
the accommodation provided by the present building, 
but the demand for advanced courses continues to 
increase, and it has been found necessary to abandon 
the more elementary classes, and to raise the fees in 
other cases. A special feature is the large proportion 
which the advanced work bears to the whole. This 
evening work in the case of a number of courses is 
of the same standard as that given to third year 
students reading for an honours degree in a British 
University. 
BOOKS RECEIVED. 
Western Australia. Astrographic Catalogue 1900-0. 
Perth Section, Dec. —31° to —41°. | From Photo- 
graphs Taken and Measured at the Perth Observa- 
tory, under the direction of WE. Cooke. Vol. ii. 
Pp. too. Vol. ii. Pp. 103. (Perth, Western Aus- 
tralia.) 
The Romance of Scientific Discovery. By C. R. 
Gibson. Pp. 318+plates. (London: Seeley, Service 
and Co., Ltd.) 5s. 
Researches in Magneto-optics. By Prof. P. Zee- 
man. Pp. xv+219+viii plates. (London: Macmillan 
and Co., Ltd.) 6s. net. 
Encyclopaedia of the Philosophical Sciences. Vol. i., 
Logic. By A. Ruge, W. Windelband, J. Royce, L. 
Couturat, ‘and others. Translated by B. Ethel Meyer. 
Pp. x +269. (London: Macmillan and Co., Ltd.) 
7s. 6d. net. 
Cotton Spinning. By W. S. Taggart. Vol. i. 
Fourth edition. Pp. xxxvi+262. Vol. ii. Fifth 
edition. Pp. .xiv+245. (London: Macmillan and 
Co., Ltd.) 4s. net each vol. 
NO. 2290, VOL. 92] 
NATURE 
[SEPTEMBER 18, 1913 
A First Course in Projective Geometry. By E. H- 
Smart. Pp. xxiii+273. (London: Macmillan and 
Goi; Ltd.) 7s. 6d. 
The Catskill Water Supply of New York City. By 
L.. White. Pp. xxxii+755. (New York: J. Wiley 
and Sons, Inc.; London: Chapman and Hall, Ltd.) 
25s. 6d. net. 
The Improvement of Rivers. By B. F. Thomas and 
D. A. Watt. Second edition, re-written and enlarged. 
In two parts. Part i., pp. xiv+369+plates 1-45. 
Part ii., pp. ix+ 334-749 + plates 45a-76. (New York: 
J. Wiley and Sons, Inc. ; London : Chapman and Hall, 
Ltd.) 2 vols., 31s. 6d. net. 
A Treatise on Wooden Trestle Bridges and their 
Concrete Substitutes according to the Present Practice 
on American Railroads. By W. C. Foster. Fourth 
edition, revised and enlarged. Pp. xix+440+76 plates. 
(New York: J. Wiley and Sons, Inc.; London: 
Chapman and Hall, Ltd.) 21s. net. 
Weltsprache und ‘Wissenschaft. Gedanken liber die 
Einfiihrung der internationalen Hilfsprache in die 
Wissenschaft. By Prof. L. Couturat, Prof. O. Jesper- 
sen, Prof. R. Lorenz, and others. Zweite Auflage. 
Pp. vit154. (Jena: G. Fischer.) 2 marks. 
Naturphilosophische Plaudereien. By H. Potonié. 
Pp. v+194. (Jena: G. Fischer.) 2 marks. . 
Egyptian Art. Studies by Sir Gaston Maspero. 
Translated by E. Lee. Pp. 223+plates. (London : 
T. Fisher Unwin.) 21s. net. 
CONTENTS. PAGE ~ 
The Structure of the Atmosphere in Clear Weather. 
Ry Dr, W..N. Shaw, F.RS. 3) ee 57 
Bactdlory and Medicine. By R. T. S| ae 59 
Gur Bookshelf ==. 2 5:5 eee 3. cotra e 
Letters to the Editor :— 
The Nature and Treatment of Cancer and Malaria.— 
Dr. J. Beard; Dr. C. W. Saleeby : 
Note on the Dicynodont _ Vomer.—Igerna 'B. "gf 
Sollas; Prof. W. J. Sollas,;\F;R:S) ] See 61 
An Aural Tllusion,—Norman Alliston. _ 61 
The Ninth International Physiological Compeell 
By Dr. C. Lovatt Evans.) ).). 3 70) ee 61 
The Duab of Turkestan. (J//ustrated.) ..... 64 
The British Association Birmingham Meeting, By 
At OR ee rc cr 65 
Section A.—Mathematies and Physics.—Opening Ad- 
dress by H. F. Baker, Sc.D., F.R.S,, President 
of the Section ...) ji ene 69 
Section B.—Chemistry.—Opening Address by Prof. 
W. P. Wynne, D.Sc., F.R.S., President of the 
Section... s,s i. fates ee 73 
Wotes 20... | «. 7.0” cueing Se ain gt 81 
Our Astronomical Column :— 
The Rotating Ellipsoid RU as st oe ee aha 86 
Comet 19130. (Metcalf), 0. :h- 0). Oe 86 
Comet 1913c (Neujmin) . @ 5) 5) =) 3 86 
New Laboratory Spectroscopic Results. ... 1 sae 86 
The Perth Observatory Section of the Aurore 
Chart: .0\. 6.10) ee iaiaeteenie ted a) beste enn 86 
The Extension of the Zone Time System .) .) caus 87 
Hind’s Nebula -:. 2 5 cts eee! > >) apo 
The Royal Observatory, Cape of Good Hope ... . 87 
A Curious Meteoric Display) =: . ..- J -eeneuee 
The Brussels Meeting of the Iron and Steel Institute 88 
University and Educational Intelligence 
Books Received . 
Editorial and Publishing Offices: 
MACMILLAN & CO., Lrp., 
ST. MARTIN’S STREET, LONDON, W.C. 
Advertisements and business letters to be addressed to the 
Publishers. 
Editorial Communications to the Editor. 
Telegraphic Address: Puusts, LONDON. 
Telephone Number: GERRARD 8830. 
