492 



NATC'/'f 



[September 29, 1923 



Portevin .ind J'l' in Clirvcnard : A dii 



of tlic truuhfuiiiiatioiih and tlntiiu.u .,; 



light alloys of aluminium. JJilatometric methods, 

 using the iccordiiif,' (liff( unt i.il dilaloinclcr, }x;rmit 

 of til' I llic ti. ii.iis ,111(1 tlic mech- 



anism 'i.mI::m I, ll;;lit :illo\-,-, of alu- 



niiiiiii .ii, .111(1 111 :;(iii-ial, of alloys 



Colli. li uiii\ .11 i.iiil 1 iaii-,ii (iiiiations. 



Mh' .ii;iU '■! Ill' '•■II t.iiil t( ni|'(i.i I iiic 1 1 .iiislonna- 

 M'i. I>\' tlic ililiiiciiii.il dilatonicl( I . iiaii!; a high 

 scnsili\it\ a|)|Mr,itiis. leads to geui'i.il c\|ucssions 

 representing' the iilicnomena as functit)us ol time and 

 temperature. (,2"<^''^ching and tempering in these 

 alloys can be interpreted by the known variations in 

 the solubility of Mg.^Si in the solid state, without 

 assuming any further transformations. — P. Soldau : 

 Equilibrium in the system gold-zinc (based on in- 

 vestigations of electrical comductivity at high tem- 

 peratures). The alloys of gold and zinc belong to 

 the type of AR-brasses, where A is a ni< t.il belonging 

 to the first and R to the second grouj) ol the periodic 

 system. These alloys are of consider.ihle practical 

 importance, as in their chemical naluu' they are very 

 close to the ordinary brasses. rUr the determination 

 of electrical conductivity at hij^h teinpcraturcs, a 

 special apparatus was constructed which was checked 

 by determining the transformation tcni])eiatures in 

 iron and steel and corr paring the results with those 

 obtained by other methods. 



Paris. 



Academy of Sciences, Se])l ember 3. — M. A. 

 d'Arsonval in the chair. AllKd Errera : A theorem 

 of linkages. — Alexandre Rajchman : Tlie Kiemannian 

 theory of trigonometrical series. — AI. Puthomme : 

 Contribution to the study of the secondary X-rays. 

 Two metallic wires, in the form of a cross, give a 

 single sharp radiographic image, but if a metallic 

 screen such as a sheet of lead, be placed between 

 the X-ray bulb and the wires, then three images are 

 observed, one on each side of the initial image. The 

 two additional images are due to secondary rays 

 starting from the edges of the lead screen. Tlie fact 

 that a needle imbedded in the body may sometimes 

 give a faint extended image rendering it difficult to 

 locate is probably due to the same phenomenon. — 

 E. F. Terroine, P. Fleuret, and Th. Strieker : The r61e 

 of the deficient proteids in supplying the minimum 

 nitrogen requirement. Experiments on the nitrogen 

 assimilated by growing pigs from ammonium citrate 

 and from gelatin. The amount assimilated varies 

 greatly with the individual animal. Gelatin proved 

 to be superior to ammonium citrate as a source of 

 nitrogen. — Mme. Randoin : Study of the vitamins 

 in molluscs. The presence of the antiscorbutic factor 

 in the oyster. From experiments on guinea pigs it 

 is concluded that the addition of oysters in suitable 

 quantity to a diet not containing vitamin-C is 

 sufficient to prevent symptoms of scurvy. — M. 

 Athanassopoulos : The tunny fish of Greece. 



Official Publications Received. 



Arkiv fiir Mateniatik, Astroiionii ocli Fy.sili utgivot av K. Svenska 

 Vetenskapsakademien, Band 17, No. IP. Meddelaii'le fijii Lund.s Astrono- 

 miska Observatorinm, No. 102 : Contributions to tlie Analytical Theory 

 of Sampling. Hy S. D. Wicksell. Pp. 46. (Stockholm : Almqui.st anii 

 Wiksell.s Boktryckeri A.-B. ; London : Wheldon and Wesley, Ltd. ; Berlin : 

 R. Friedlander und Solm ; Paris : C. Klincksieck.) 



Meddelanden fran Lunds Astronomiska Observatorium. Serie II, 

 Nr. 21> : Fliichenhelligkeiten von 666 Nebelflecken und Sternliaufen, nach 

 pliotonietrischen Beobachtungcn am 49 cm. Refraktor der Universitats- 

 Sternwarte, Strassburg (ELsass), 1911-1916. Von Girl Wirtz. Pp. 63. 

 Serie II, Nr. 30: Star-gauges by William Herscliel and Jolin Herschel. 

 Edited by C. V. L. Charlier. Pp. 29. (Lund : Soieiitia Publisher.) 



Kungl. Fysiografiska SitUskapets Handlingar, Band 34, Xr. 2. Medde- 

 landen Mn Lunds Astronomiska Observatorium. Serie II, Nr. 31 : 

 Star-gauges at the Observatory of Lund. By C. V. L. Cliarlier, P. A. 

 Eiigstriim, P. B. Fiinge, K. A. W. GvUenberg, C. I. L\m'iahl. K. G. 

 Malmqnist, J. B. Ohls.son, S. D. Wicksell. Edited by C. V. I.. Charlier. 

 Pp. x + 20:. (Lund : C. W. K. Gleerup; Leipzig: Otto Harrassowitz.) 



the ■» 



T».. 



r 



I'll). 

 J. II. 

 l><i 



No. •.: 



Char. 



HIgl. 



2H. 



Haw! 



liyf; 



.nil 1,1 .s<><i1»im1 Collem of AKrieultum: Countjr Bxt<-i. 



i.i lin!!.f;n No. M: Raportaun KleM B(|wnm«nt4i with o.' v 



: out oo Fkniw In Um 0>lbi(B Atm duriuK 



7& (Aberdora.) 



v'r of Atrrlcultare. Bntloila Ma W: An 



I'l-TkM by Liming, Bjr Prof. 



. irjil Biir\p)r <>t QllWWlllnd. 

 . (leM. By 



BtillHin, i 



Pp. 83. (W 



Bulletin 



rior : United 8Uit« 0«ol 

 itH HourcM and Umml lis 

 Iv 4 VS. j ccnu. iiuiuain 718 : G«oloKy and Or. 

 DUtrict, Colorado. By William H. EmmoDK aii<i j i; . 



ix + 19.S + 12 j.latcH. 40 c-nt«. Hullelln 738 : Tl 



of N«w England. By T. NeUon l)al». Pp. '.<> 



ceiitH. Biillciin 74'.: The Kotalna-KiwWuIana liv 



Fre<l H, Moltlt .in.l .) It .Mertie, Jr. I*>. i».i4 .. ,._. . . _■ :,la. 

 Bulletin 7.'" nit*? at Our. . Kraiik L. ilea*. Pp. 



16 + 2 plate^ .,n : Oovert, _• Offlc«.) 



Deimrtm. ],L .irior: Unit.. :o;dcal Survey. Wat«r- 



Supply PaiJ*ir 4iii. ; .Surla«e Wat<>rs of Wy..minK «n<l their Utilization. By 

 itobert Follan.sbee. Pn. x+831. 40 cenU. Water-Supply P8p«w 495: 

 Geologj- and Ground-Wat«r Iteaourceaof Sacram-'-'f v..!i..v (■.'.if,.r,,ia. 

 By Kirk Bryan. Pp. xi + 2.S.5+li» piat«K. »"K)cent >r 



496: The Industrial Utility oi Public Water ~ ■! 



SUtes. By W. I). CoIIIdh. 1'- .-^'■' "( ! : 



Government Printing Ofllce.) 



Ministry of Agriculture, K. 

 Bulletin No. 32: The Cottoi. . . . .r-,,,,..-,...,^.. n. : 



Hainfall. By C. B. Williams (Cairo : liovenim-M'. 



Publications Office.) P.T. 2. 



Report of the Government Cli.nii. .rk of the Govemmeut 



I.<aboratory for the Year ending 81- TA. With Appendices. 



Pp. S4. (London : H.M. Stationery ( (. net. 



Bulletin of the JNational Ilesearcii ^oimcu. Vol. 6, Part 2, No. 33: 

 On the Formulation of Methods of Experimentation in Animal Production. 

 By E. B. Forbes and H. S. Grindley. Pp. W. 1 dollar. Vol. 6, I'art 8. 

 No. •;( : r.iiises of Geoeraphical Variations in thi' ' ' I'pidemic of 



I'lls p. ih.' Cities of the United States. By V '. ntington. 



Pp. :ii;. r. cents. Vol. 6, Part 4, No. 35 : Apprji Hishway 



Research Pro.jects in the Uniteti States. By C. A. " 



I.-'jO dollars. (Washington : National Academy of ~ 



Year Book of the Michigan College of Minc-^. 

 Mich. Annouticm.iit of Coi Pp. rj.^. (Hougiuoti, 



Mich.) 



Imperial D.pai tment of Am ■■•si Indies. Report on 



the Agricultural Department, St iv 21-1924. Pp. iv+44. 



(Barbados.) 6d. 



The East London College (Univ. I on). Calendar, Sesaion 



1923-1924. Pp. 164. (London: .Mile Knl R.a.l.) 



Diary of Societies. 



MONO A y, October I. 

 Society or En.;i:»i:ki!s (at Geological Society), at 5.3tt i . 



Improved Meilimi for Mass Proriiu'tion of Tank GUsa Bottle.'*, .iar>, etc. 



ll"Kfi.\7>7<.ir, October 3. 

 Society of Public Analvsts (at Chemical Society), at S._J. H. Coste, 

 E. R. Andrews, and W. E. F. Powney : The Sampling of Coal; the 

 General Problem ami some Exiwrinients. — H. G. Stocks : A New Teat 

 for distinguishing Castor Oil. — A. E. Etheridge : The Volnmetric 

 Estimation of Vanadium in Steel. — 0. L. Hinton and T. Macara : The 

 lodimetric pptermination of Sugars. 



THURSDAY, Octobkr 4. 



CHli.r the Royal Sanitary Insti; 



oixiii... .... .,..^- ;.v.,.ili March: The Report «ji i..r v.: 



relation to the Teaching of Biology in Schools. 



Chbmical Society, at 8.— E. B. R. Prideaux and A. T. Ward : .\ 

 of the Dissociation Constants of Weak Inorganic .^"•'' 

 Boric Acid. Part II. Phosphoric Acid.— C. N. Hinsli i;. 



Prichard : Two Heterogeneous Gas Reactions. — C. N. i: 

 C. H. Pricliard : A Homogeneous Gas Reaction. The ir.-nn.-.: [■■■t-nii,- 

 1 osiiidii of Chlorine Monoxide. Part I. — R. G. W. Norrish and E. K. 

 Hil.al : The Direct Union of Oxygen and Sulphur. — W. R. Onnandy 



and K. (' "- Note on Aqueous Formaldehyde Solution. — H. 



Ha« l.'v n: s,and : The Interaction of Potassiom Tetroxide 



with Ice ,1 te Sulphuric Acid. 



PUBLIC LECTURES. 



THrP.-^DAY. (I. T. .1 >i: ;. 

 L'NivK.Rsrrv CoLi ! 



K,).'yiit (liilro'hi. • 

 I,i>M..iN School OK l.v .■-s.'" n.-. ... ... — ."■.. ,\iiii... .■.r-..^,,..,:i..- . ii.-»surT- 



iiiiiit 'M' Progress in Public Healtti (William Farr Lecture). 

 Univf.usitv CoLLEOF, at ."..IS.— Dr. T. G. Pinches: The New Babylonian 



Creation and Flood Stories. (Succe'-r"-- - ^ ■•■•-.^s on October Hand l.«. 

 Kino's College, at 5.30.— Prof. R. ." vali : The Position of 



Physiology in Science and Medicin-* 



FRIP ■ .0. 



University College, at ,".. .ret A. Murray: Primitive 



Religion. 



NO. 2813, VOL. I 12] 



