102 



NATURE 



[March i6, 191 i 



chloroiodidcs of silicon. The chlorobromides of silicon can 

 be obtained in a pure state by the simultaneous action of 

 hydroj^en and bromine upon silicon tetrachloride under the 

 influence of the silent discharge. The new method has the 

 advantage of ensuring the absence of oxychloridcs. — M. 

 Nanty : The action of potassium bicarbonate upon mag> 

 nesium chloride and upon soluble salts of magnesium in 

 general. — Ci. Darien* and II. Rost : Some derivatives of 

 butylcyclohcxane. An account of the application of the 

 Sabatier and Senderens method of adding hydrogen to butyl- 

 phenol and its homologues, — Andr^ M«y«r : The azo 

 derivatives of pbenylisoxazolonc. — J. Baauvsri* : The 

 hypothesis of the mycoplasma and the metachromatic cor- 

 puscles. — Pierre Lo»av« '• The use of potash solutions for 

 the recognition of the gcrminative faculty of ceilain seeds. 

 It is shown that seeds that have lost their germinative 

 faculty impart a colour to potash solution of a certain 

 strength, whilst seeds still capable of germinating do not 

 colour such solutions. As a means of rapidly sorting seeds, 

 the author thinks this test may possess certain advantages. 

 — Henry P*nau : The cytology of Dacillus anthracis. — 

 A. Maria and L^n MacAuliffe : Anomalies in the 

 dimensions of the ears in the insane. — L. Spillmann and 

 L. Brunts : The effect of certain pathological processes on 

 the action of the leucocytes. — H. Sta»«ano and L. 

 Lematte : The possibility of preventing intact the agglu- 

 tinated masses in bacteria which have been killed by the 

 ultra-violet rays. The advantages of this means of sterilisa- 

 tion for the preparation of bacterial emulsions designed for 

 sero-diagnostic purposes. — Pierre Le«ne : The variations of 

 feeding in the Coleoptera. — F. Mesnil and M. Caullery : 

 Papillomatous neoformations in an annelid (Potatnilla 

 torelli). A description of a growth recalling the papilloma 

 in vertebrates. — Edouard Chatton : Paramyxa paradoxa, a 

 cnidosporidium without cnidoblast. — Carl Renz : The exist- 

 ence of some new Triassic deposits in central Greece. — 

 P. and N. Bonnet : The existence of the Trias and the 

 Mesojurassir in the massif of Kasan-Jalla (southern Trans- 

 caucasia). — L. Cayeux : The middle Miocene in the island 

 of Crete. — L^on Bertrand : The structure of the western 

 Pyrenees. — Louis Fabry : The three earthquakes of 

 February 18 and iq, 1911. A discussion of the records of 

 the seismograph of the Observatory of Marseilles. — The 

 president gave an account of the legacy left by M. A. T. 

 Loutreuil to the Academy of Sciences. This legacy amounts 

 to 3.500,000 francs, and the testator's wishes as to the 

 administration and application of the fund are given in 

 full. ^ 



DIARY OF SOCIETIES. 



THURSDAY, March 16. 

 Royal Society, at 4.30. — Gametogenesis of the Gallfly, Neuroterus 



Unticularis. Part II. : \.. Doncaster.— The Action of the Venom of 



F.chis carinatus: Sir T. R. Fraser, F.R.S., and Dr. J. A. Gunn.— 



Further Researches on the Development of Trypanosoma gambicnse in 



Clossina palpalis: Colonel Sir D. Bruce, C.B., F.R..S., and others.— 



Spontaneous Cancer in Mice: Dr. M. Haaland. 

 Royal Institution, at 3.— Giants and Pygmies: Prof. A. Keith. 

 LiNNEAN Society, at 8.— On the Brown Seaweeds of the Salt Marsh: 



Miss S. M. Baker. 

 Royal Society of Arts, at 4.30.— Education in India : C. H. A. Hill. 

 Institution of Mechanical Engineers, at 8.— Presidential Address: 



E. B. Ellington. 

 Royal Gkographical Society, at 5.— Research Meeting. Names of the 



South Sea Islands : W. H. R. Rivers.— Geographical Monographs from 



Oxford. Salisbury District : L. M. Hardy.— Andover District : O. G. S. 



Crawford. 



FRIDAY, March 17. 

 Royal Institution, at 9 —Water Supply : J. H. Balfour- Browne. 

 Institution of Civil Engineers, at 8.— The Production of Water-gas : 



Alwyne Meade. 



SATURDAY. March 18. 

 Royal Institution, at 3.— Radiant Energy and Matter: Sir J. J. 



Thomson, F.R.S. 



MONDAY, March 20. 

 Royal Society of Arts, at 8.— Applications of Electric Heating : Prof. 



J. A. Fleming, F.R.S. 

 Victoria Institute, at 4.30.— Prof. Hilprecht's newlydiscovered Deluge 



Fragment : Dr. T. G. Pinches. 



TUESDAY, March 21. 



Royal Institution, at 3.— Explorations of Ancient Desert Sites in 

 Central Asia : Dr. M. A. Stein. 



Zoological Society, at 8.30.— On the Amphipod Genus Leptocheirus : 

 Mrs. E. W. Sexton. — On Colour and Colour-pattern Inheritance in 

 Pigeons : J. Lewis Bonhote and F. W. Smalley.— Notes on Marine 

 Ostracoda from Madeira : Dr. G. Stewardson Brady, F.R.S. 



Institution of Civil Engineers, at Z.— Further discussion : The 

 Electrification of a Portion of the Suburban System of the London, 

 Brighton and South Coast Railway : P. Dawson. 



NO. 2159, VOL. 86] 



RovAL AsTHROPOLor.iCAL iiociETV, at 8.1s.— Pbynicai Character* ofl 

 Buihmen Pa*t and Preient : Dr. F. C. ShnibMiL 



Royal Statistical Societv, at 5.— Some Statistics of Japan : Charle« 

 V. Sale. 



MiNFicAi.of;icAL Society, at 5.30. — On Mr. Solly* Obiier\tittnn nf 

 Wilmhireite in 190^: Prof. W. J. Lewi», F.R.S.— Two NV " ' 

 from the Binnenibaf: R. H. Solly. — Noten on Catoiterite h 

 Peninsula: J. B. Scrivenor. — Note* on the Occurrence of !■ 

 Dcrbykhire and Co. Galway, and of Bertrandite in Cornwall : .\. Kn^srii. 

 —On Quarts-twinning: Dr. J. Draeman.— Crystallographic Notes: 

 1. V. Barker. 



tVBDJ^ESDAY, March «. 



Royal Society or Artr, at 8.— The Manufacture of Poitlaod Cement : 

 A. C. Davis. 



Geolocical Society, at 8.— On »ome Mam.. ., the 



Wealden of Hastings: Dr. A. Smith Woo<l* Ob- 



servations on tbe Eastern Desert of Egypt ; win '•■nn;; 



on the Origin of the Britith Trias : A. Wade.- Faiiiiai Horizoa- r 

 Bristol Coalfleld : H. Bolion. 



THURSDAY, March 23. 



RoTAL Society, at A.ya.— Probable Pa^rs: A Theory of A»yn ^ 

 .Series: G. N. Watson. — The Ionization of Heavy Ga<i«s by X 

 R. T. Beatty.—The Variation of the Ionization with Velocity f r 

 ^ Particles : W. Wil.son.— The Causes of Absorption of Oxygeo by the 

 Lungs in Man: C. G. Douglas and Dr. J. S. Haldane, F.R.S.— The 

 Influence of Planets on the Formation of Sun-spots: Dr. A. Schuster, 

 F.R.S. 



Royal Institution, at 3.— Giants and Pygmies : Prof. A. Keith. 



Institution of Electrical Engineers, at 8.— Electricity Meters with 

 Notes on Meter Testing : H. A. RatclifT and A. E. Moore. 

 FRIDAY, March 24. 



Royal Institution, at 9. — The Sidereal Universe : Sir David Gill. 

 K.C.B., F.R.S. 



Physical Sikiety, at 5.— (i) A Sen.sitive Thermo Regulator ; (2) Experi- 

 ments on the Measurement of Electrolytic Resistances using Alterrutins 

 Currents: Dr. H. F. Haworth.— (1) Oscillatory Currents in Coupled 

 Circuits ; (2) Some Radio-telegmpbic Apparatus in Use at the City and 

 Guilds (Engineering) Cdllege : Prof. G. W. O. Howe. 



Institution of Civil Engineers, at 8.— The Uses of Chemistry in 

 Engineering: James Swinburne, F.R.S. 



SATURDAY, March 25. 



Royal Institution, at 3.— Radiant Energy and Matter: Sir J. J. 

 Thomson. F.R.S. 



CONTENTS. PAGE 



The Kaiser- Wilhelm Society for the Promotion of 



Science 69 



Mimicry in the Butterflies of Africa. By E. B. P. 70 



The Geology of Egypt. By J. W. J 73 



The Beginnings of Botany 73 



Vector Analysis. By G. B. M 75 



Map-making. By E. H. H 75 



Overhead and Underground Electric Lines. By 



Prof. Gisbert Kapp 76 



Our Book Shelf 77 



Letters to the Editor: — 



The Non-simultaneity and the generally Eastward 

 Progression of Sudden Magnetic Storms. — Dr. C. 



Chree, F.R.S.; Prof. Kr. Birkeland .... 78 

 The Centenary of Bunsen's Birth. — Francis Jones 



and Dr. J. Grossmann 79 



Life and Habit. — Francis Ram 79 



Big-game Shooting in Patagonia and Newfound- 

 land. {Illustrated.) By Sir H. H. Johnston, 



G.C.M.G., K.C.B 80 



The Fancy Feather Trade ............ 81 



The Blackfeet of Montana. (Illustrated.) By Dr. 



A. C. Haddon, F.R.S ... 83 



Prof. J. H. van 't HofT. By F. G. D. . . . '. \ . 84 



Notes 86 



Our Astronomical Column: 



The Spectrum and Orbit of o Persei 91 



The Determination of Latitude 91 



The Relation between the Separation and the Magni- 

 tude of Visual Double Stars 91 



Halley's Comet 91 



The Path of Comet 1886 I ............ 91 



Nova Lacertse 91 



Earthshine on the Moon 91 



Observations of Saturn 92 



The Galton Bequest. By T. LI. H. ....... 92 



Standard Time in France 92 



A London Institute of Technical Optics 93 



The Stereochemistry of Nitrogen 93 



Marine Biology at Port Erin. {With Plan.) ... 94 



The Method of Science. By Prof. C. S. Minot . . 94 

 The Caloric Theory of Heat, and Carnot's Princi- 



pie. By Prof. H. L. Callendar, F.R.S 97 



University and Educational Intelligence 99 



Societies and Academies 100 



Diary of Societies 102 



