6o 



\ VI URE 



Si p 1 1 m bi r i<). [918 



SOCIETIES AND AC [DEMIES. 



Paris. 

 Uadeni) "i Sciences, Augusl 26. M. Emlle Roux in 

 P. Apptll : I in integration ol the simul- 

 liffei ential equations verify ing the 1 [ermite 



1 '.'I U (.. Bigourdan : 1 he astronomical 



1 .H the Petit Luxembourg. The co-ordinates oi 

 stations of the College d'Harcourt. G. Charpy 

 M. Uodchot : The formation ol coke. 

 M. Plancherei : Xhe unicit) "i the developmeni of a 

 function in a series oi Legendre polynomials. M. 

 \uric : Xhe calculation of the energj accumulated in 

 hi aun bj contraction sinqe its formation. C. Haveau : 

 fs the principle "1 equivalence a consequence of 

 Carnot's principle? A criticism 61 a recent paper by 

 Sir Joseph Larmor, G. Reboul : The influence of the 

 radius uf curvature of a bod} on the formation of hoar- 

 frost. I In. 1 1 -in >s 1 commences to deposit more rapidly on 

 pbjects the srnallei thi radius of curvature.- M. Col- 

 lignon : The propagation of the sound of gunfire to great 

 distances. Annual periodicity. M. Chopin: Apparatus 

 for the measurement of chimney losses and the 

 elements constituting these losses. Starting with the 

 tpproximate formula giving the brat carried away by 

 due-gases as directly proportional to the difference of 

 1 .iiuit between the outside air and the flue, and 

 inversely proportional to the percentage of carbon 

 dioxide 1>\ volume, an apparatus is described which 

 reads off directly the percentage of heal lost. The 

 temperature difference i~ measured bj a thermo- 

 ouple in the usual way. and for the other factor 

 is, is made of the change in electrical resistance of 

 .1 solution nl r.nisii, ,,1,1.1 caused by the absorption of 

 carbon dioxide and the production ol sodium carbonate. 

 Bach of the factors is ilms reduced to a galvanometer 

 reading, and the point of intersection of the two gal- 

 vanometer needles is read off on a series of curves 

 plotting the percentage heat loss. The apparatus in 

 its present form is not automatic. — H . Colin and 

 Mile. A. Chaudun : The law of action of sucrase : the 

 hypothesis of an intermediate combination. The 

 results of si\ series of experiments are given, from 

 which it is shown that the theory of A. Brown, which 

 assumes a combination between the sugar and the 

 enzyme, is justifiable.- F. Kerforne ; The iron minerals 

 i Menez-Bel-Air (Cotes-du-Nord).- C. Viola : The law 

 , ,f Curie. •'Curie's law is defined as follows : The normal 

 eases ol the faces of .1 crystal in stable equilibrium 

 are directly proportional to their capillary constants, 

 .mil s,, in, mathematical consequences are developed. — 

 A. Piedallu : The industrial application of the colouring 

 matter of the glumes of the sugar sorghum. Details 

 iven of 1 he method of extracting the dye, and of 

 its appli iii, ,11 with different mordants to dyeing wool, 

 silk, an,! cotton. M. (ialippe : Researches on the re- 

 il of the living elements existing 

 normally in animal and vegetable tissues. — P. (iirard 

 and 1\. Audubert : The electric charges of niirro- 

 irganisms 1 heji surface tension. — R. I'aucot : The 

 measurerhenl ol ferial pressure in clinical practice. 

 A criticism of current methods of measurement and 

 suggestion of a 1 hnique. 



Septemhei 2. M. Paul Vppell in the chair. E. 

 Cartan : Varieties ol mensions.- P. Straneo : 



The extension to physics oi the principles of homo- 

 geneity and similitude, and .1 remarkable relation 

 between the universal constants of a theory. — P. 



Weiss : The characterisi 1 of fluids. The 



, quation proposed is 1 1 tin foi m 





/') = tRT, 



with precision the properties ',1 .1 fluid in one of the 

 slates corresponding with a famiK el isochores I , 

 Dienert ; The estimation of nitrites. The proposed 

 method is based on tin- liberation and estimation of 

 iodine from an acidified solution ,,1 potassium iodide 

 by the nitrite in an atmosphere Free from oxygen. — 



I', (iaulicrt : The aililiri.il roloialion of Spheroliti 



helicoidal formation (tartrates and bimalates). H. 

 Hubert: The influence of the lithological nature uf 

 formations relative!) to the distribution ,,1 the surface 

 ami underground waters north of the Senegal River. 

 I., (ientil : The geolog) of Andalusia. M. Lecolntre; 

 Some recenl fossil-bearing strata in the neighbourhood 

 of Casablanca, Western Morocco. F. Masmomeil : 



111,- morphology of tin antibrachial skeleton. — P. 

 (iodin . iiir transformation into pedagogic indications 

 of the data of anthropolpg) on the individual nature 

 of the child of both sexes. A. Vernes : The COlori- 

 metric measurement of syphilitic infection. — S. 

 Voronoff and Mme. Evelyn Bostwick : The intensive 

 acceleration of the budding of wounds by the applica- 

 tion of testicular pulp. 



BOOKS RECEIVED. 



Medicinal Herbs and Poisonous Plants. By Or. 

 D. Ellis. Pp. xii+180. (London: Hlackie and Son, 

 Ltd.) 2s. i.J. net 



I he New Science of the Fundamental 1'lr si< -. 

 By Dr. W. W. Strong. Pp. xii+108. (Mechanics- 

 burg, Pa. : S.I.E.M. Co.)' 1.25 dollars. 



Present-day Applications of Psychology, with 

 Special Reference to Industry. Education, anil Nervous 

 Breakdown. Bv Dr. C. S. Myers. Pp. 47. (London : 

 Mi 1 hui 11 and Co., Ltd.) is. net. 



War Neuroses. Bv Dr. J. T. MacCurdv. Pp. ix + 

 132. (Cambridge: At the University Pus-. | -s. 6d. 

 net. 



R is the pas constant for pi 1 1, , 

 with four constants, a, h, n, 

 255 T. VOL. I02] 



.ses. This 



CONTENTS. page 



Industrial Chemistry. II. By Dr. E. F. Armstrong 41 



A Theorist's Outlook 42 



Mathematical Books. By H. H 44 



Our Bookshelf 44 



Letters to the Editor: — 



A Shower of Sand-eels. — Prof. A. Meek 46 

 The Water-Powers of the British Empire. By Dr. 



Brysson Cunningham 46 



Physical and Chemical Constants 47 



Biology and War 48 



Notes 48 



Our Astronomical Column : — 



August and September Meteors 52 



Nova Monocerotis 5 2 



The Spectroscopic Binary Boss 46 53 



The Invasion of Trenches by Rats 53 



The Properties of Copper. By H. C. H. C 53 



Interferometer Determination of Refractive Indices. 



By L. C. M 54 



Fern Notes from Prince Bonaparte's Herbarium . . 54 

 Scientific Research and National Prosperity. Bv 



Dr. C. F. Juritz 55 



University and Educational Intelligence -59 



Societies and Academies . . 60 



Books Received . .... 60 



Editorial and Publishing Offices : 



MACMILLAN AND CO., Ltd.. 



ST. MARTIN'S STREET, LONDON, W.C.1, 



,oi,; business letters 

 Publishers. 



to be addressed to the 



I ,'mmunications to the Editor 

 Telegraphic Address: Piii'sts, London. 

 \ umber : Gekkarp 8830. 



