;6o 



NATURE 



[February i_:;, 1902 



bromo-veratrols. — On some derivatives of glutamine, by M. E. 

 Roux. A description of the mode of preparation and properties 

 of various derivatives of plucamine. — The action of aluminium 

 chloride on some anhydrides in chloroform solution, by M. 

 Marcel Desfontaincs. — On the opistholiranchs collected in 1SS3 

 by the Talisman expedition, by M. A. Vayssiere. — Thelympho- 

 niyeloid constitution of the conjuctive stroma of the testicle of 

 the young in Raja davala, by M. A. Policard. — On the homo- 

 logies of the interstitial cell of the testicle, by M. I'. Slephan. 

 -On the structure of the tuberculous roots of Thriiuia tiihcrosa, 

 by MM. A. Maige and C. 1. Gatin. — (;n the Ksot'O or Taiiffhin 

 de. Afi'/iahJ, the poison of Mciiahea venenata^ by M, E. I'errot. 

 — The chemical study of Klamanville granite, by M. A. Leclcre. 

 It is shown from the analyses given that the composition of an 

 eruptive rock may differ very considerably in certain cases frcmi 

 that of the initial magma. — ( )n the transformation of fatty 

 materials into .sugars in oleaginous seeds during germination, 

 by M. I'. Maze. The experiments afford confirmation of the 

 view that the digestion of falty matters in the seed during ger- 

 mination is made with a slow fixation of oxygen, and, probably, 

 with a slight loss of carbon. — Researches on the working of 

 antagonistic muscles in voluntary movements, by M. I. 

 Athanasiu — Remarks on a note of M. Pizon on a mechanical 

 theory of vi.sion, by M. Raphael Dubois. In reply to the 

 criticism of M. Pizon, the author maintains that his mechanical 

 theory of vision is confirmed, not only by the researches of Deren 

 Stort and Engehlmann, hut also by those of Charpentier and 

 d'Arsonval. — The vine and Coefiophagtis echinoptts, by M. S. 

 Jourdain. MM. L. Mangin and P. Viala have correlated a 

 certain disease of the vine with the preiience of a certain acarian, 

 C. cchinopus. The author advances reasons for doubting the 

 correctness of this view, and believes that curative measures 

 directed against this acarian will be useless. — A new case of 

 trichosporia observed at Nancy, by M. Paul Vuillemin. — Con- 

 tribution to the knowledge of the action of lecithine on the 

 typical elements of the blood, by MM. II. Stassano and F. 

 Billon.— The etiology of the cattle plague, liy MM. NicoUe and 

 Adil-Bey.— On a fall of rain observed at Periers, by M. Sehil- 

 laut. The rain-water from the shower in question was found to 

 contain chalk, sulphates, chlorides and silica, the latter in 

 .sufficient quantity to cover the leaves of trees with a siliceous 

 layer. 



DIARY OF SOCIETIES. 



THURSDAY. February 13. 



RoVAL Society, 314.30.-011 Ihe Sub-Mechanics of the Universe : Prof. 

 O. Reynolds, P.R.S. -On Chemical Dynamics and Statics in Light: 

 Dr. M. Wiiderman. -Preliminary Note on a Method of Calculating 

 Solubilities, Equilibrium Constants of Chemical Reaction'^, and Latent 

 Heat of Vaporisation : Dr. A. Kiiidlay.-The Refractive Indices of 

 Fluorite, Qu.-trtz and Calcite : J. W. GifTord 



Institution of Kt.KCTKiCAL Kncinrers, at 8. — Researches on the 

 Electrical Conductivity and Magnetic Properties of upwards of 100 

 different Alloys of Iron : Prof. W. K. Barrett, F.R.S., and W. 

 Brown. — On some Conclusions deduced from the preceding Paper ; 

 Prof. W. F. Barrett, F.R.S. 



Mathematical Socibtv, nt 5.30. — (i) On the Density of Linear Sets of 

 Points; (2) On Closed Sets of Points defined as the Limit of a Sequence 

 of Sets of Point.s : W. H. Young.— On Plane Culiics : Prof. A. C. Uixnn. 

 —On Boussinesq's Problem : Prof H. Lamb, F.R.S —On the Wave Sur- 

 face of a Dynamical Medium, /Kolotropic in all Respects: Prof. T. }. 

 Bromwicb. — On tjuantitative Substitutional Analysis (second paper) : 

 A. Young. 



FRIDA V. Feukuary 14. 

 'Royal Institution, at 9. — Magic Squares and other Problems on a 

 Chess Bo.ard: Major P. A. MacMahon, F.R.S. 



Physical Society, at 5. Annual General Meeting. — Address by the 

 President, Prof. S. P. Thompson, F.R.S.— Mr. T. H. Littlewood will 

 exhibit an Atwood's Machine. 



Royal Astronomical Socibtv, at 3.— Annual General Meeting. 



Malacological Society, at 8. 



Institution ok Civil Engineers, at 8. — Some Public Health Aspects of 

 the Question of Sewage Disposal : C. Johnston. 



SATURDAY, FituRUARY 15. 

 RovAl. Institution, at 3. — Some Electrical Developments : Lord Ray- 

 leigh, F.R.S. 



MONDAY, February 17. 

 Society of Arts, at 8. — Personal lewellcry from Prehistoric Times: 



Cyril Davenport. 

 ■Imperial Institute, at B.30. — The Obstacles to Development in West 



Africa: Dr. C. F. Haiford-Battersby. 

 Victoria Institute, at 4.^0.— The Physical History of the Norwegian 

 Fjords : Prof. Edward Hull, LL.D., F R.S. 



TUESDAY, Fehkuary 18. 

 Royal Institijtion, at 3.— The Cell : its Means of Offence and Defence: 

 Dr. A. Macfi dycn. 



Z001.OGICA Society, at 8.30.— On Afuslela falatallica from Ihe Upper 

 Miocene of Pikermi and Samos : Dr. C. I. Forsyth Major. -On Two 

 New Genera of Rodents from Potosi, Bolivia: Oldlield Thomas, F.R.S.— 

 On some Characters distinguishing the Young of various Species of 

 Polyplerus: G. A. Boulenger, F.R.S. 



Institution OF Civil Engineers, at 8.— Electrical Traction on Rail- 

 ways: W. M. Mordeyand B. M. Jenkin. 



Royal Statistical Society, at s— A Statistical Review of the Income 

 and Wealth of British India: J. Atkinson. 



WEDNESDAY, February iq. 



Society of Arts, at 8.— The Use of Balloons in War : E. H. S. Bruce. 



Royal Meteorological Society, at 7.30. — Report on the Pheno- 

 logical Observations for 1901 : E. Mawley. — La Lune mange Ics Nuages 

 —a Note on the Thermal Relations of Floating Clouds : W. N. Shaw, 

 F.K.S. 



Chemical Society, at 5.30.— Enzyme Action : A. J. Brown.— On the 

 Velociiy of Hydrolysis of Starch by Dia.stase, with some Remarks on 

 Enzyme Action : H.T. Brown and T. A. Glendinning.— Polymerisation 

 Products from Diazoacetic Ester : O. Silberrad. — Condensation of 

 Phenols with Esters of Unsaturated Acids, Part VII.: S. Ruhemannand 

 H E. St.-ipleton. -The Union of Hydrogen and Oxygen : H. H. Haker. 



Royal Microscopical Society, at 8.— Polarising with the Microscope : 

 E. M. Nelson. , 



THURSDA Y, February 20. 



Royal Society, at 4.30. 



LiNNEAN Society, at 8.— (1) On some Gasteropoda (/-//«m<»^/w/i«j and 

 Chitra) from Lake Tanganyika, wiih the Description of a New Genus ; 

 (2) On the Nyassa Vivipara and its Relationship to Neothaunia : Miss L. 

 Digby.-On the Fruit of Melocarma hamhisoidfs, an Exalbuminous 

 Gr.lss: Dr. A. St.ipf— On a West Indian Sea Anemone, lintwiitofsis 

 gljiiili/cri, : Dr J. E. Duerden. 



FRIDAY, February 21. 



Royal Institution, at 9.- Musical and Talking Electric Arcs: W. 

 Duddell. 



Institution of Mechanical Engineers, at 8 - Annual General 

 Meeting. Followed by discussion on Modern Machine Methods, with 

 Reply by the Author, H L. F. Orcutt, and, time permitting. Fencing 

 of Steam- and Gas-Engines: H. I). Marshall. — Fencing or Guarding 

 Machinery used in Textile F.ictories : S. R Plait.— Protection of Lift- 

 Shafts, and Safety Devices in connection with Lift-Doors and Con- 

 trolling Gear : H. C. Walker.- Guarding Machine Tools : W. H. 

 Johnson. 



Geological Society, at 3. — Annual General Meeting. 



Epidemiological Society, 318.30. 



CONTENTS. i-.\GE 



The Cambridge School, and a Zoological Text- 

 Book 337 



Mathematical Text Books in the United States. 

 G. B. M 



Hy 



338 



A Canadian Pioneer in Science and Education. 



liy A. G 339 



The Flora of India Illustrated. By W. Bolting 



Hemsley, F.R.S 34' 



Our Book Shelf:— 



Freycinet : " Kssais sur la Philosophie dcs Sciences. 



Analyse, Mecanique" 34' 



Griffiths: "The Thermal Measurement of Energy." 



— E. E 342 



Armagnat : " Instruments et Methodes de Mesures 



Electriques Induslrielles."— M. S 342 



Serviss: " Pleasures of the Telescope." — C. P. B. . 342 

 Gregory and Simmons : " Introductory Physics for 



Irish Intermediate Schools."— S. S 343 



Hall: " Algebraical Examples" 343 



Letters to the Editor : — 



The Eilzt;erald-Lorentz Effect.— Prof. W. M. 



Hicks, F.R.S 343 



Birds Attacking Butterflies.— Prof. Edward B. 

 Poulton, F.R.S. ; W. Irvine Fortescue ... 343 



The Severn Bore.— Chas. T. Whitmell 344 



Persistence of the Diieclion of Hair in Man. — Dr. 



Walter Kidd 344 



The Colours of Wings of Butterflies.— W. G. B. . 344 

 Experiments on Ventilating Cowls. By W. N. 



Shaw, F.R.S 344 



Gold in India 347 



Notes. (Ilhistrated.) 347 



Our Astronomical Column : — 



Disturbance of Corona in Neighbourhood of Promin- 

 ences 35' 



A New Solar Theory. (With Diagrams.) By Dr. J. 



Halm 35' 



Microscopical Examination of Alloys of Copper 



and Tin. (lUuUraien.) By W. Campbell .... 354 

 University and Educational Intelligence ..... 356 



Scientific Serials 357 



Societies and Academies •. •, • 35^ 



Diary of Societies ...:'.'. 360 



NO. 1685, VOL. 65] 



