NATURE 



[D: 



the melting point, re-fusion and removal of the emana- 

 tion in a current of air.— Victor Henri : The structure 

 of molecules and the absorption spectra of substances 

 in the state of vapour. — M. Ch«va«.t#-lon : The 

 diffusion of sulphur vapour in air linary 



temperature. Particles of solid snlpli iponr 



at ordinary tcmiH i.iiuic , and tlurs< 

 short distance iiom tin siiljilmr 

 vapour was rendered evi 

 D. Gelinsky : The metn 1 



attempt to detcntiim- tlu- mtiwj^.i, m \'. iii.lr msccU 

 by the Dumas method, m wliirli ilic m .n i u.is covered 

 uitli copper oxide, combustion was incomplete. 

 I li< wliolc surface was found to be covered with 

 metallic copper, the effect being as though copper 

 had been deposited electrolytically. — J . Froidevoux : 

 The estimation nf ammoniacal nitroj^'cn in certain 

 nitrogenous ni.iti rials, and particularl\ m jirotcids 

 and tlicu piodiKts of hydrolysis. — (. Gaudefroy : 

 The dis{x?rsion of double refraction \\\ crystals 

 M. Charcot and Louis Dangeard ; K(S( .ui lies in 

 submarine geology in the Mcclitt i ram an. ( rm r ot 

 the Pourquoi-Pas, 1923. — E. Rotlie ; 1 iu- ]irin( i])lc 

 of a method of exact determination of tlic pro- 

 pagation of seismic waves. — Marcel Baudouin : ihe 

 markings on the prehistoric clay statues from the 

 cave of Montespan, near Saint-Martory (Haute 

 Garonne), are pittings representing Ursa major. — 

 P. Nobdcourt : The production of antibodies by the 

 tubercles of Ophrydeae. — Jean Charpentier : Applica- 

 tion of the biochemical method of characterisation 

 of galactose to the study of the composition of the 

 pectins. The products of hydrolysis of four pectins 

 from different plants were submitted to the bio- 

 chemical method described in previous communica- 

 tions : in each case the crystallised /3-ethylgalactoside 

 was obtained proving the presence of galactose. — 

 J. Beauverie : The circumstances which may modify 

 the effect of the " critical period " on the yield of 

 wheat. — E. and G. Nicolas : New observations on 

 the influence of hexamethylenetetramine and of 

 formaldehyde on the bean. — H. Ricome : The 

 intervention of gravity in phototropism. — E. Rou- 

 baud : The physiological condition of zootropism in 

 mosquitoes. The views of J. Legendre (Nature, 

 November 17, p. 747) as to certain mosquitoes 

 attacking animals in preference to man require 

 modification : captivity, hunger, or deprivation of 

 water may cause an immediate change in the habits 

 of the insect. — H. Barth614my : Physiological and 

 experimental polyspernia in the uterine eggs of 

 Rana fusca. — J. Athanasiu : The supposed existence 

 of a stimulating wave which is propagated in the 

 myocardium. — M. Nicati : Orientation and visual 

 sense of duration. — Jacques Benoit : The experi- 

 mental transformation ot sex h\- early ovariotomy in 

 the domestic fowl. — J. Chevalier and E. Dantony : 

 The toxic action of the insecticide principle of 

 pyrethrum flowers. 



OfiRcial Publications Received. 



iiont Cinchona Plantations 

 i. Pp. 6+xii. (Calcutta : 



Sixty-nrst ^ 

 and Factory 

 Bengal Secret.iriiit Mn.ik lii'pnt.) ,s au 



Univorsity of Illinoi.s : Engineering Exiierimeut Station. Bulletin No. 

 137 : Th>' Strength of Concrete ; it.s Relation to the Cement, Aggregates 

 and Water. By Prof. Arthur N. Talbot and Prof. Frank E. Richart. 

 Pp. 118. (Urbana, 111. : University of Illinois.) 60 cents. 



Federated Malay States. Report of the Secretary for Agriculture, 

 Straits Seitlements and Federated Malay States, for the Year 1922. Pp. 

 16. (Kuala Lumpur.) 



Bulletin of the Experiment Station of the Hawaiian Sugar Planters' 

 Association. Agricultural Chemical Series, Bulletin No. 47 : A Study 

 of the Phosphates in the Island Sugar Lands. By W. T. McGoorge. Pp. 

 61. (Honolulu, Hawaii.) 



The Transactions of the Leeds Geological As>.rM'iatioi). Jubilee volume. 

 Part 1>.), 1820-1, 1921-2, 1922-S. Edited by J. li. Everett. Pp. 59+8 

 plates. (Leeds.) bt. 



Department of the Interior : The Dominion Astroplivsical Observatory, 

 Victoria, B.C. A Sketch of the Development of Astronomy in Canada 



and of tha I 



Vol. in. Art. I.' 



t Circular .- 

 1 , K. I'bUlips. I 



34. (WndhlngUjii : <iijVBrn;ii<?nt Priuliugumce.) S ceota. 



Dian- nf Societies. 



RoTAL Socir 

 W. C. No\ 



RoTALSOCIt 



rairh.iirii, 

 .1. A. II. 



w. 



I'T, M. Cuipin, »ii'i 

 a I Pain in Itarvou* 



M«.ting). «t 7.— 

 '« in Electrieity 



■■i>ctlon), at 7. — 



nt <jaarry. 



•), at 8.— II. O. 



: WImpole StTMt), at 



I "Wn Planning. 

 I iiscuftsion on w. H. J. 

 >n Committee of the 



.ii iin^'incem' Club, Corentry 

 Position of the Rubber Tyre 



IsinrTios OK Ki.F.i-riti(Ai. Kxi.is 



I: It. A. Murray and others : Di*. 



I ii'iKrtakings. 

 Institution ok Mbciiamcal 1" 



F. K. A. Manning : The Man:. 



AKISTOTELIAN SOCIKTY (at Vi 



CollingwcKxl ; Sensation and i 



KOVAL INSTITITK OK BhITIKM 



8.— R. Unwiii : Higher Hull'; 



Fakahav StKMKTV (at Cliemiia; - 



Vernon's Uejxjrt to the At:i 



British Non-Kermu,-, M>-t;ils 1: 



IS.STITUTION or TH 



street), at 8. - ' 

 Industry. 

 Royal Geo' ~ .ciety (at iEolian Hall>, at 8.8a — !<■ 



Weston : J of Nature on Japanese Character. 



i UESDA Y, Decembcb 18. 

 RovAL SociETV OF Mepicike, at 5. — General Meeting. 

 Royal Statistical Sociktv (at Royal Society of Arts), at 5.15 H. 



Faber: Agricultural Production in Denmark, lW>-13aii'l 1.'.'.. 

 Institute or Transport (at Institution of Electrical En^nne^rs), at 



6.30.— H. T. Cliapman: Arterial Roads and their Effect upon Tranajiort. 

 Institution ok Civil Enoinecrs, attS. 

 Institotk or Marine Em;ineers, Inc., at 6.30. — W. Setlar : A Baaia 



for the Explanation of Marine Gear TroiibleA. 

 I{oY.\(. riiMToi^uAi'Hic Society Of i;i'f.\t Hi-.iTAis.at T.— B. C. Wieklaon : 



Coiiiliinalion Printing. 



\V. 



lick and 8. P. Peters : 

 oking downwards) at 



Ciauut'll, Lincoliisluii;, duni.;; llie peiii*! Fti^ruary lv»*' t<j June 192S. 



—Dr. H. Jeffreys: The Cause of Cyclones.— A. W. I>ee : The Relation of 



the Circulation in the Upi)er Air to a Cirrumpolar Vort- \. 

 Geolocical SofiETY OK LoKDoN. at 5.30. — Prof. W. J. S" 



of Inve.stigaling Fossils by means of Serial Sections. 



Ilesultj* obtained.— J. Walton: Tli- S;:::iiur.. ami 1 ..^_ 



Fossil Plants. 

 Royal Microscofical Society, at : dford : Melanin 



ForiM:iti..ii fi!,.i I'.v u. •!;,(., .11 ;<> ;!,•■ '. ."ntir Cancer.— 



Dr. Mieroacope. 



Institution ok .Mininu .\nli Mi w. 



1nstiti"tio.v ok Stkucti'ral Kn ■ e.il 



Desi.'Miiii.' ol Structural Ste. .ik'-.s 



rmc Society ok Great Britain (at Royal Society of 

 \ ,. i!i;iugura! M.ftii;- of tlie Kinen^a; jiai -. (;roup.— W. 

 Day : Kiiieuiatograph> ■ce<ients. 



Chemical Society, at 8. :ioy : The R< ntheGlow 



of Phosphorus and tli-j i ;..;. of Ozone. — i'; :. .. .:. I..jwTy: Tlie 



Origin of Mutarotatiou and the Mechanism of iHouieric Change. A 

 reply to Baker, Ingold, and Thorpe.— F. Challenger and F. Pritchard : 

 The Action of Inorganic Haloids "" i ir-ai,,..\r,.- ii!-.. i ,,t, r.,. :■!,!« — 

 J. F. Wilkinson and V. CHiallenp- t 

 Part VII. lodo- and Xitro-Derivat 



Royal Society OK Tropk" mv.... .v, .,,. .., ... :. , , 



F.MBF.R -1. 



Royal PHOTor.RArmc ^ Great Britain (Pictorial Oroap 



Meeting), at 7. — A. H. Diake : I'lctorial I..on<lon. 

 Royal Sociktt of Mxdicine (Electro-Tlierapeutics Section), at S..:;0.— 



Dr. U. Williams: F'allacy of ili. l>n,:,!.<><i Colon.— Dr. H. A. Hams : 



Some Problems in BoIleGro^^ • \'. . .\. Salmond : The Teaching 



of Normal Radiography and : 



PUBLIC LECTURES. 



^^AILKDAY, December 15. 

 HoRNiMAM Museum (Forest Hill), at 3.30.— Misa M. A. Murray : My 

 Excavations in Malta. 



THURSDAY, Decembbb 20. 

 Kntos Collkok, at 5.30.— Prof. C. K. Webster: The League of Nations 

 and Europe (League of Nations Union Lecture). 



NO. 2824. VOL. I 121 



