224 
NATURE 
[NovEMBER 16, 1916 
New Sout WaALEs, 
Linnean Society, July 26.—Mr. A. G, Hamilton, presi- 
dent, in the chair.—R. J. Tillyard: Studies in Aus- 
tralian Neuroptera, No. 4 Descriptions of new 
genera and species of the tanihes Ithonidz, Hemero- 
biide, Sisyride, Berothidz, and the new family 
Trichomatide. An attempt is made, by a critical 
study of the venation, to clear up the difficult question 
of the relationships of a mass of forms usually rele- 
gated to the Hemerobiide, Reasons are given for 
restricting this family to forms combining a number of 
characters, among which the principal are the number 
and structure of the radial sectors.—Dr, A. J. Turner : 
Studies in Australian Microlepidoptera. Five genera 
and sixty-five species of Meyrick’s two groups, Céco- 
phorides and Eulechriades, are described as new, and 
a number of known species are recorded from addi- 
tional localities—Rev. W. W. Watts: Some crypto- 
gamic notes from the Botanic Gardens, Sydney. 
BOOKS RECEIVED. 
Elementary Practical Chemistry. By Profs. F. 
Clowes and J. B. Coleman. Part ii. Eighth edition. 
Pp. xvi+255. (London: J. and A. Churchill.) 3s, 6d. 
net. 
A Text-Book of Physics. 
Fourth edition. Pp. xiv+692. (London: J. and A. 
Churchill.) tos, 6d, net. 
Om Ole Roémers Opdagelse of Lysets Toéven. By 
K. Meyer. (Kgbenhavn: Hgst und Sgn.) 2 kronen. 
Chemistry for Rural Schools. By E. Jones and 
J..J. Griffith. Pp. 184.. (London: Blackie and Son, 
Ltd.) 2s. 6d. net. 
Typographical Printing Surfaces. 
and J. C. Grant. Pp. xxiv+732. 
mans and Go:) ~2l}*es-net. 
Oil-Field Development and Petroleum Mining. By 
Edited by A. W. Duff. 
By L. A. Legros 
(London: Long- 
A. B. Thomson. Pp. xix+626+maps viii. (London : 
Crosby Lockwood and Son.) 25s. net. 
A Concordance to the Works of Horace. .Compiled 
and edited by L. Cooper. Pp. ix+593. (Washington : 
Carnegie Taseitation) 
The Coal Measures Amphibia of North America. 
By R. L. Moodie. Pp. x+222+plates 26. (Washing- 
tone : Carnegie Institution.) 
Gonadectomy in relation to the Secondary Sexual 
Characters of some Domestic Birds. By H. D. 
Goodale. Pp. 52+plates vii. (Washington : Carnegie 
Institution.) 
A Sylow Factor Table of the First Twelve Thousand 
Numbers. By H. W. Stager. Pp. xii+120. (Wash- 
ington: Carnegie Institution.) 
The Elements of Reconstruction. Pp. 120. (Lon- 
don: Nisbet and Co., Ltd.) 1s. net. 
Australasian ‘Antarctic Expedition, 1911—1914. 
Scientific Reports. Series C, Zoology and Botany. 
Vol. iii., part i. Fishes. By E. R. Waite. Pp. 92+ 
plates 5, etc.- (Adelaide : 
Ra Bak: wegen 8s. 6d. 
DIARY OF SOCIETIES. 
THURSDAY, November 16. 
InsTiTUTION OF MINING AND MEVALLURGY, at 5.30.—/nformal Dis- 
cussion® Standardisation, so far as it affects the Mining and Metallurgical 
Industries: including the Question of the Adoption of the Metric System. 
Cup Sruvy Society, at 6—F ixperiments in Hand-writing in Schools : 
Speed Tests in Manuscrint Writing : Dr. C. W. Kimmins.—The Artistic 
Aspect of Manuscript Writing: W. Seutt.h—Manuscript Writing in a 
Central School: J. W. Samuel.—Manuscript Writing in a Boys’ Ele- 
mentary School: A. Sinelair. 
LINNEAN Sociz TY, ats5.—(r) Pedanios Dioscorides of Anazarba; his Writings 
and his Commentators; (2 ) The New Cabinets for the Linnean Herbarium : 
‘The General Secretary.—A New Australian Genus of Hydrocharidacez : 
Dr. A. B. Rendle.—Some Co lestions of the Littoral Marine Faunz of the 
Cape Verile Islands, made by Cyril Crossland in the Summer of 1904: 
A. W. Waters. 
CHEMICAL Soctety, at 8.—A Simple Method of Estimating Arsenic in 
Organic Derivatives: A. J. Ewins.—A New Method for the Preparation 
NO. 2455, VOL. 98] 
of Nitrosyl Tribromide: R. L. Datta and N, R. Chatterjee. —Neutral 
Potassium Persulphate as a Reagent in Organic Chemistry: = L. Datta’ 
and J. N. Sen.— he Hydrolysis of Iron Ammonium Alum: W. N. Rae. . 
FRIDAY, Novemser 17. 
INSTITUTION OF MECHANICAL say thee, at 6.—Report of the Hardness 
Tests Research Committee. 
MONDAY, NovEMBEK 20. 
Royav GEOGRAPHICAL Society, at 8.30.—Easter Island : Mr. and Mrs. w. 
Scoresby Routledge. 
TUESDAY, NoveMBER 21. 
ZooLocicat Society, at 5.30.—The Pectoral and Pelvic Arches of the 
London Specimen of Archzopter)x: Prof. B, Petronievics and Dr. A. 
Smith Woodward.—Studies on the Anoplira and Mallophaga, being 2 Ce 
Report upon a Collection from the Mammals and Birds in the Society's 
Gardens, IT.: b. F, Cummings.—Notes on a Collection of Heterocera 
— by Mr. w. Teather! in British East Africa, 1911-13 : Lieut,-Col. J. M. 
awcett. 
INSTITUTION OF Civit. ENGINEERS, at 5.30.—Keadby Bridge: J. B. Ball. | 
INsTITUTION OF PeTROLEUM TECHNOLOGISTS, at 8.—The Pyrogenesis of 
Hydrocarbons: E. L. Lomax, Dr. A. E. Dunstan, and Dr. F. B. Thole. - 
Roya Sraristicat Society, at 5.15.—Presidential Address; The 
Organisation of Registsation in its Heise on Vital Statistics; Sir Bernard 
Mallet. 
WEDNESDAY, NovemsBer 22. 
Royat Society oF ARTS, at 4.30.—The Economic Development of Ria 
and Britain's Share Therein: I.. Urquhart. 
GEOLOGICAL SOCIETY, at 5.30. 
THURSDAY, November 23. 4 
Royat Society, at 4.—Annual Report of Council.—At 4.30 Probable 
ie The Scattering of Plane Electric Waves by Spheres: Dr. 
T. J. 'a Bromwich.—Numerical Results of the Theory of the Difft 3 
of 2 Plane Electromagnetic Wave by a Perfectly Conducting Sp! 
J. Proudman, A. T. Doodson, and G. Kennedy. 
INSTITUTION OF ELECTRICAL Resear at 8.—The Parallel Operation 
of Electric Power Stations: J. S. P 
CONTENTS. ‘PAGE 
Northern Counties Lore . . ce 
A Composite American Text- book of Geology. By 
AT Wig SS OE ra ee Jo.) ae 
Radiographic Methods Eee tints +d let gee ae 
Our, Bookatelty 550), cacy sete ene eae ote aa 
Letters to the Editor:— é 
The Concilium Bibliographicum of Ziirich.—Herbert 
Haviland Field... . Ysi/ acye tte ae 
Scarcity of Wasps.—H. St. Gsaree Gray ort nana 
A Peculiar Thunderclap.—Prof. Giovanni Platania 
The Pollination of Toadflax.—S. ea Dr. C. E. Moss 
Scientific Glassware ..... 
Prof. H. H. W. Pearson, F.R.S 
Seward; FBS... ielew +, sys) ONORaaene 
Prof. Henrik Mohn. By Sir Napier Shaw, F.R.S, 211 
" By Prof. A. C. 
Notesiv. 1-29: se ete pe eUte dy Cpe wine hee 
Our Astronomical Column :— «yh eee 
The Eclipsing Binary RX: Hereulis . . . . .. . . 216 
Spectroscopic Resolving Power : COs 
The Minimum Radiation Visually Parceptitle! PR af iy 
Meteorology in Wat. -) . cin +f © &. 3 ou nae 
Education at the British Association ...... it 
The British Association at Newcastle :— 
Section K.—Botany.—Opening Address (Abridged) 
by A. B. Rendle, M.A., D.Sc., F.R.S., Presi- 
dent of the Section 3. LOS 
University and Educational Intellfigerice 2 be allel Oe 
Societies and Academies. ..........+ +6. 220 
Books Received ....... Nh eT. 224 
Vea. 
Diary or Societies... CS a ee 
Editorial and Publishing Offices: 
MACMILLAN & CO., Lrp., ; 
ST. MARTIN’S STREET, LONDON, W.C,  } 
Adwertisements and business letters to be addressed to the 
Publishers. . 
Editorial Communications to the Editor. ony 
Telegraphic Address: Puusis, LONDON. oy oi tag 
Telephone Number: GERRARD 8830. 
se ee eee 
