240 



NA TURE 



[January 3, 1895 



ihi= acid a= a rMgent for so.l.um. by If. J. H. ^e"'""- 

 lh.= ac.d a^ ^S^^^ ^^^ Alfred C. Chapman. -Interaction 



Essential oil 



of I • 2JiVeiones with primary amines ottne 

 R' CH. NH. (>econd notice), by Francis K. In 



general formula 

 app, F. K.S., and 



W. B.' Davidson.— The isomeric 



rnk.h;irn;;hTng.poinis.by R. Meldola, F.R S.. and F. W. 

 Streatfeild.-On the yejlow colojurins '"^' 



dinitrodiazoamidohenzenes 



F.R.S., and F. W. 



matter of Sopfiora 



/^/ratVa.'by Th. Edward Schunck, F.R.S. 



Paris. 



Academy of Sciences, Dec. 24. 1S94 -M- I-°p"y '" "'^ 

 ch^r -oXn nvariant numbers in •hetheoryofalgebraica^^.ur- 

 r K. M r^il^M Picird —Di^pacement of carbon by boron 



e on 

 mall 



(lorivsiives but vield no acid or basic salts. 

 arreei^Irally \vell adapted for determining their mo.ecu 

 wxi.h." and hence ,ha valency of the contained metal icradic 

 rv'in'::;ro' a deteimination^of the yapou, den^^^^^^^ 

 ylacetonate. it is found that glucinum is ct 

 le must be written Be O.-On ihe consUt 



These derivatives 



their molecular 



ical. 



mum 



is divalent, and its 



acetylacetonate. u .'*■""•- „ -On 'the constitution of the 



oxide must be written fie O. ^^"^ '^"^"^ n luunel.-On the 



re^Hic^^be'SE p'h' o'in^^^ O. Racoviua.- 



^^'{^'dtelopme.t/^e^^y^^ ^ ^^7^^" 

 the Cirripedes, by M. A. ijru\ei. vj" > Weden- 



ences between normal and enervated muscle by M. J^--."*^^" 

 sky -On the biological relations between Chdochyirnouv.U- 

 tLn, A. Prune,, a'nd the vine, by ^.^I'-^.^-^.^'J^t, 



-:^^rh:!.o?:^h::^^c:-f;.!:rpl^ofj;^:Sooiero. 



phyllum, by M. B. Renault. 



,heo,herhand.-On the circulaj^^on of 0,^ lymph m^t^^^^ 

 g;:Ki:rin^crc;i<^S^ere.es.ab,ishmLc^^ne- 

 vLds by M A. Millardet.-The Secretary announced thedeath 

 irP.' FVarcois Denza, Director of the Vatican Observatory 

 "died December .4).-The elements of the pl^net 1894 BE. b^ 

 M T Coniel ProviM-mal elements for the planet BI, by .M. 

 Capon The plane. BE is the most favourably s.iuat.d among 

 The known planets, for the determination of solar parallax 

 planM BI is identical with (369) of the .-/""«" 

 5: V„-/...-Ob.erva,ions of Encke's comet and of the planets 

 BH and BI, made at Algiers Observatory, by MM. !>;»•;''""<> 

 and Sv.-Ohservations of Encke's comet, made ^t Lyons 

 Ob° erratorv by M. G. Le Cadet.-Observations of the sun. 

 ™S L7ons1)bserva.ory durin, the third cpiarter of .894, b^ 

 Ml GuiHaume.-On the problcmof three bodies M. F. S.acci 



clillaVtention ,0 his paper^n thi. ^-^'^1 ^^\'^^J;;':^'';i,,:; 

 1874. He rematks that a paper of August 27 (ComfUs >^nJus, 

 45 ) "Sur la transformation des equations canoniques du 



p oblOme des trois corps." is a ^'=P'°''"="°" .°f .^" ^^,^ 

 l._.. _ p ,,lc nn ihe matter of a priority ciaim 



g 

 The 

 du Bureau des 



Elccuic Meters proposed : " .7 •.•"{.-;, ^\ _p„hecamliropiis 



paper. — Remarks 

 made by M. O. 

 solution of 

 series, by M. R. Perri 



on the matter ol a pn 

 Staude. by M. P. Staeckel - 

 numerical equations by means of 



n._On a doctrinal point relative 



holm).— Sur la Tr.ins. . 



holm).— Suite onde Eleltromaencusche 

 Versiich einer Theoric 

 BcM eKlen KOpern : Prol 

 HimmelsRCvvolbes : _, , . , 

 ''sEL'/.:s'-E^;foh'nS?ed.>Ia.ax^^^^ J..n«.->o- (">? .S>'-<i).-9oo_4 



Words, January (Isb'-'") , Vr„rn,.vl 



of the Chemical Society, ""'"'^^ ((;"^7„ ^ Jicon imie Journ.,1, Pecem 



liche Z ologie, Iviu Band, 4.Heia"" J. ■-- '-■ ' ' '-'" 



bcr (MacmJlan). 

 Journal, Jaiii.ary 



On the 



recurring 



to 



Andrade. 



On il 



by M. Vaschy. 



traversed by a 



OSta 

 supp' 



the theory of multiple integrals, by M. Jules , ,f.„ _ 

 -On the ai^iua for l6 and .8 variables, by "• *• Lafay- 

 hr elecirosta.ic capacity of a line traversed ^y a c-rren 

 The capacity per unit of length of a cable 

 permanent current has the same sense as in 

 idly varying currents, it cannot be 

 sed that Ihe electric field admits of a potential, hetice the 

 notion of a definite capacity disaopears.-Electnc potent.a s 

 in a liquid conductor in uniform movement, by M. O. 

 Gou'c d2 Villemonice. At speeds of 33 »" 3^3 >""'• P" 

 Scond. .he uniform Movement of a liquid conductor liaversing 

 widecla« tubes of uniform secti -n. does not produce any 

 r;pec' able difference of potential '>e.«een two pomts^n he 

 Ifauid -E.pfrimenial researches on radiation at low lemptra- 

 nT« bv M Raoul I'iclet. This is an abstract con am.rg a 

 ,er^;o?cu;v ss^o-ingthe variation of r-idiation with time 

 and a .li,cu,sion of the^e curves. -Contribution to ihe stu.ly of 



&c ■ Prof A. RiRhi (ttol gna)- 



:W; FilehnetBonn"-Blaclcie's Fir.t S.agc Maihe.na.ics. 



zine. Janu.-ir^' (")S Strand). 

 -Sunda, Macazine. lanuar,- ll-b.srer)-.lournal 

 '""° '- '^ ■ -Zcils^hiiftlilr Wissenschaff 

 1 .mic Journal, Pec 



CONTENTS. PAG« 



Biological Lectures and Addresses. By E. B. P. . 2-7 



Textbook of Agriculture • ' ,; Vj' f i 219 



Ewing on the Steam-Engine. By N. J. L -•» 



°"\ve°tte':h!nt ''iTasVeihaltniss der Philosophie zu der 



empirischen \Vis-enscha(t von der Nalur . • 



Moore: "Meteorology. Practical and Applied. - 



\\Ws • ■ " The P^vince'of South Australia " . . • 

 SmUh V " Measurement Conversion Diagrams . . 

 Letters to the Editor:- p^,^. 



"^'.^'r^rd^'p ^'sTRev^H^W. wltson, F R.S 

 Tlv Uirn ■■■— I''"-'" t:entral Aus.ialia.-Prof. 



Ex 



before Whether prepared from ferrous or ferric sal s, all con 

 before. All .are coloured. They form a series pa^alM 



Baldwin Spencer 



P..Uv,.n.ology it the Royal_Scliool of Mines.-Right 



«°"- "'^ " "M::r;n:-Ri-ght Hon. Sir John 



220 



220 

 221 

 221 



221 



223 



223 

 223 



223 

 223 



36 hours. 



in from 10 10 30 muiulei. 



Thi- reagent allows the dctcc- 

 'Ihe method of 



Clberyaikeiin;;: particularly acetylace.one. form me 



NO. 1314. '^'OL. 5'] 



_ F.R.S. 



Eocene Fn.s.U at Murrer 

 .-.J^^^'^hf^obJ^cly'Kaphy-WiUia.^^^ 



J. Pope . . . ^ ■ •■ ■ ■ ■ ■ ■ 22J 



" l-he /. .ological Record. -S.I'ace 



Gravitation.-Dr J. i°\^-^^% vincent 



°"^°" "f ■.h,Farth Bv Prof. John Perry, 

 On the Age of the Eartn. uy r j ^^ 



Jupit'lr^' i/iluslratid.) By W. F.' Denning '. . . • • 22!^ 



Notes • • 



Our Astronomical Column :— ^ , 



A New Short Period Variable ' ". . 233 



Doppler's Principle . ^34 



7A,- AsliPfhyikal Journal ^34 



Ell,,tical Orbits . ^ ■ ; pi^i,„- • ; ; ; . 234 



?re'F7rt\LM"?n-;r/°L./..AV,»..V,"». 



J)r.cri lly M.urice S. Evans . . ■ 

 scientific InveMiKat.on in Canada. By ^^^ 



D-wson, C M.G, I" R =» 238 



lrokn;Pam?brs':rnd"seria.s Received! ! i • • ^4° 



and /.. 



Dr. G. M. 



235 



