136 
NATURE 
[JANUARY 27, 1923 

of these species belong to the division Harpacticoida. 
—C. P. Alexander: New or little known species of 
Australian Tipulide (Diptera), Pt. i. An account of 
twenty-three specimens from a number of Australian 
collections.—H.S. Halcro Wardlaw: The effect of sus- 
pended respiration on the composition of alveolar air. 
Inspirations were held in the lungs until the composi- 
tion of the alveolar air ceased to alter. Circulatory 
disturbances were minimised by holding an inspiration 
for a number of consecutive short periods instead of 
for one long period, Similar final values were reached 
whether the initial inspiration consisted of air alone 
or of air mixed with a percentage of carbon dioxide 
higher than the normal alveolar percentage. Similar 
final values were reached also whether the inspiration 
was held under normal or under negative intrathoracic 
pressure; this was not the case when circulatory 
disturbances were allowed to exert their effect.— 
A. M. Lea: On Australian Anthicide (Coleoptera), 
Notes on synonymy, variation, and distribution are 
given, and 53 species are described as new.—J. 
McLuckie: A contribution to the parasitism of 
Notothixos incanus (Oliv.) var. subaureus. The 
structure of the fruit, the mechanism of seed-dispersal, 
the structure of the haustorium and its relation 1o 
the host-tissues, are described.—T. Thomson Flynn: 
The phylogenetic ‘significance of the marsupial 
allantoplacenta. In a typical mammal, the placental 
cycle is divisible into three stages,—metrioplacental, 
omphaloplacental, and allantoplacental. The last 
stage is absent in all marsupials except Perameles. 
Examination of the allantoplacenta of Perameles 
shows its definite relation to that of Monodelphia. 
It is considered that the ancestors of marsupials were, 
therefore, placental. 

Official Publications Received. 
The Institution of Civil Engineers. Engineering Abstracts prepared 
from the Current Periodical Literature of Engineering and Applied 
Science, published outside the United Kingdom. New Series, No. 14, 
January. Edited by W, F. Spear. Pp. 186. (London: Gt. George 
Street.) 
Agricultural Research Institute, Pusa. Bulletin No. 136: The Hydrogen 
Ion Concentrations of some Indian Soils and Plant Juices. By Dr. 
W. R. G. Atkins. Pp, ii+12. Bulletin No, 187: Note on the Probability 
of an Inter-relation between the Length of the Stigma and that of the 
Fibre in some forms of the genus Gossypium. By Ram Prasad. Pp. 
ii+7+2 plates. (Caleutta: Government Publications Office.) 4 annas each. 
Schriften der Naturforschenden Gesellschaft in Danzig. Neue Folge. 
Fiinfzehnten Bandes Drittes und Viertes Heft. Teil 2: Jahresbericht 
fiir 1921. Pp. ii+55. Teil 3: Wissenschaftliche Abhandlungen. Pp. 
viii+112. (Danzig), 
44 Bericht des Westpreussischen Botanisch-Zoologischen Vereins. Pp. 
iv+30. (Danzig). 
Geological Literature added to the Geological Society’s Library during 
the Year ended December 3ist, 1914. Compiled by Arthur Greig. Pp. 
iv+193. (London ; Geological Society.) 5s. ; 3s. 9d. to F.G.S. 
Hampstead Scientific Society. Report of the Council and Proceedings, 
With a List of the Members, for the Period October 1920 to September 
1922; with Reports of General Meetings, 1919-1920. Pp. 63. (London: 
Stanfield House, Prince Arthur Road.) 

Diary of Societies. 
SATURDAY, January 27. 
Royat Institrtion or Great Britain, at 3.—Sir Walford Davies’: 
Speech Rhythm in Vocal Music (2). 
MONDAY, January 29, 
British PsycHoLtocicaL Society (Astheties Section) (at Bedford 
College for Women), at 4.30.—L. Abercrombie : Communication versus 
Expression. 
INSTITUTE OF ACTUARIES, at 5.—W. Palin Elderton: Notes on the 
Treatment of Extra Risk. 
Royat CoLLece or SURGEONS or ENGLAND, at 5.—Prof. R. L. Knaggs: 
Osteitis Fibrosa. 
Roya Sanitary Institue, at 5.30.—Dr. L. C. Parkes: 
Lecture to Students in the various Courses. 
ARISTOTELIAN SociEry (at University of London Club), at 8.—Prof. W. A. 
Brown: The Problem of Classification in Religion. 
RoyaL GeoaRarnicaL Socrery (at Molian Hall), at 8.30.—Capt. J. BE. T. 
Phillips: Kigezi and the Birunga Range, Uganda, 
NO. 2778, VOL. 111] 
Introductory 
TUESDAY, January 80. 
Royat Institution or Great Briratn, at 8.—R. D. Oldham: The Char- 
acter and Cause of Earthquakes (1). 4 
InsTITUTE OF Marine ENGINEERS, Inc., at 6.30.—A. Keens: Some — 
Deductions froin Indicator Diagrams. 
Royat ProrocrapHic Society or GREAT Britain, at 7.—T. Bell: On 
the Thames with a Camera. - 
WEDNESDAY, Janvanry 31. 
Roya. CoLLece or SurcEons oF EnGianp, at 5.—Prof. M. Woodman: 
Malignant Disease of the Upper Jaw, with special reference to Operative 
Technique. 
InsTITUTION OF MECHANICAL ENGINEERS (Students’ Meeting), at 6.—T. R. 
Wilton: Foundations in Dock and Harbour Works (Vernon- rt 
Lectures) (2). 4 i 
Royav Socrery or Arts, at 8.—T. H. Fairbrother and Dr. A. Renshaw : 
The Relation between Chemical and Antiseptic Action in the Coal Tar 
Dyes. 
Bava Socrery of MepicrneE (Social Evening), at 9.—Prof. W. Wright: 
Leonardo da Vinci. y 
THURSDAY, Fesruary 1. 
Roya InsTITUTION oF GREAT BRITAIN, at 3.—Prof. I. M. Heilbron: The 
Photosynthesis of Plant Products (1). f 
Royat Socrery, at 4.30.—Prof. O, W. Richardson : The Magnitude of the 
Gyromagnelic Ratio.—Sir Richard Paget: The Production of Artificial 
Vowel Sounds.—F. Simeon : The Carbon Are Spectrum in the Extreme 
Ultra-violet.— Prof. J. Joly: Pleochroic Haloes of various Geological 
Ages.—Prof, H. A. Wilson: The Motion of Electrons’ in Gases.—Dr. H. 
Hartridge : The Coincidence Method for the Wave-length Measurement 
of Absorption Bands.—A. Berry and Lorna M, Swain: The Steady 
Motion ofa Cylinder throngh Infinite Viscous Fluid.—W. Jevons; The 
Line Spectrum of Chlorine in the Ultra-violet (Region A 8354-2070 A).— 
M. H. Evans and H. J. George: Note on the Adsorption of Gases by 
Solids and the Thickness of the Adsorbed Layer. 
Linnean Society or Lonpon, at 5. 
RoyaL AERONAUTICAL Socrety (at Royal Society of Arts), at 5.30.—G. 8. — 
Baker: Ten Years’ Testing of Model Seaplanes, 
INSTITUTION OF ELECTRICAL ENGINEERS, at 6.—P. J. Robinson: The 
Maintenance of Voltage on a D.C. Distribution System by means of a 
fully Automatic Substation. 
Cnremicat Society, at 8, ; 
Roya Society of Mepicrine (Obstetrics and Gynecology Section), at 8. 
Dr. W. R. White-Cooper and H. K. Griffith: (1) A Case of Inversion of 
the Uterus occurring in the Third Week of the Puerperium; (2) A Case 
of Obstructed Labour due to Contraction Ring.—B. Whitehouse and 
Dr. H. Featherstone : Note on the Use of Spinal Anesthesia with Tropo- 
cocaine in cases of Cwsarian Section.—Dr, 8. Cameron: Cwsarian 
Section. 
CaMERA Cup, at 8.15.—J. E. Saunders: Off the Beaten Track at the Zoo. 
FRIDAY, Freruary 2. 
Royat Sociery or Mepicrne, (Laryngology Section), at 4.45.—Dr. I- 
Moore: Operative Procedures in the Treatment of Bilateral Paralysis” 
of the Abductor Muscles of the Larynx, with Special Reference to a — 
New Method by means of which, it is suggested, the Air-way may be 
Re-opeued and the Patient Decannulated. 
Royat CoLiece or SuRGrONS OF ENGLAND, at 5.—Prof. C. A. Joll: The 
Metatastic Tumours of Bone. bi ] 
Royat AstronomicaL Society (Geophysical Discussion), at 5.—Col. B. 
M. Jack: The Projection for the International Aeronautical Ma 
Other speakers, Capt. G. T. McCaw, Col. Sir C. F. Close, Col. J. 
Winterbotham, and probably A. R. Hinks. Chairman, Sir G. P. 
Lenox-Conyngham. 3 
INsTIrUTION OF MECHANICAT. ENGINEERS (Informal Meeting), at 7.—A. E. 
L. Chorlton : The Use of Light Alloys'in place of Iron and Steel. 
Juntor InstiTuTION or ENGINEERS, at 7.30,—P. J. Waldram : Ventilation — 
and Lighting of Factories. : 
Royat Socizry or MEprcine (Epidemiology and State Medicine Section), 
at 8.—Dr. R. J. Reece: Progress and Problems in Epidemiology — 
(Presidential Address). , : 
Roya Society oF Meprcinr (Anesthetics Section), at 8.30—Dr. J. 8. 
Goodall: Some Cardiovascular Conditions in relation to Anesthesia. 
Royay InstitvuT1I0N oF Great Brirary, at 9.—C, F. Cross: Fact and 
Phantasy in Industrial Science. 
PUBLIC LECTURES. 
SATURDAY, January 27. 
Horniman Museum (Forest Hill), at 3.80.—Capt. W. H. Date: Wireless 
Telephony and Broadcasting. 
TUESDAY, January 30. 
GresHAM COLLEGE, at 6.—A. R. Hinks: Astronomy. 
Lectures on January 31, February 1 and 2). 
WEDNESDAY, January 31. 
Kina’s Cou.Ece, at 5.30,—Sir Frank Dyson ; The Measurement of Stellar 
Distances, 
(Succeeding 
THURSDAY, Fesrvary 1. 
Finspury TECHNICAL CoLiecE (Leonard'Street), at 7.30.—Sir Oliver Lodge : 
The Basis of Wireless Communication (Silvanus Thompson Memorial 
Lecture), 
Roya tis or British ARcuiTEcts, at 8.—G. T. Forrest: London's 
Unhealthy Areas (Chadwick Lectures (1)). (Succeeding Lecture on 
February 8). 
SATURDAY, Fesrvuary 3. 
Horniman Museum (Forest Hill), at 3.30.—F. Balfour-Browne: Insect 
Pests and their Control. 

