165 
calcium carbide), a good yield of the arsenite is produced. 
Vhe physical properties of propyl, normal butyl, and iso- 
butyl arsenites are given.—The orthosubstituted azo-acids 
and their transformation into c-oxyindazylic derivatives : 
P. Freundier.—The condensation of oxalacetic ester with 
cyanacetic ester in presence of piperidine: Ch. Schmitt. 
The condensation can take place in two ways, giving rise 
to isomeric substances possessing different properties.—The 
replacement of hydroxyl of some carbinols by the radical 
—CH,.CO,H: R. Fosse.—The constitution of hordenine : 
E. Léger. The regulated oxidation of acetyl-hordenine 
with potassium permanganate gives acetyl-para-oxybenzoi¢ 
acid. This fixes the orientation of the hydroxyl group in 
hordenine, which is thus found to be para-oxyphenylethyl- 
dimethylamine.—The volcanic rocks of the peninsula of 
Cape Verde (Senegal): Jean Chautard.—The presence of 
galena amongst the minerals produced by the fumerolles of 
the last eruption of Vesuvius: Ferruccio Zambonini. 
Referring to a recent paper by M. Lacroix on this subject, 
the author mentions that he contributed a paper on the 
same subject to the Accademia dei Lincei in August last. 
—The intracellular inclusions of the leaf of Rhamnus 
cathartica: Wladimir Tichomirow.—The evolution of the 
metachromatic corpuscles of seeds during germination: J. 
Beauverie.—The histological modifications produced in 
the flowers of Teucrium Chamaedrys and of Teucrium 
montanum by the larvee of Copium: C. Houard.—The 
coral formations of the island of San-Thomé, Gulf of 
Guinea: Ch. Gravier.—A respiratory calorimetric room : 
M. Letulle and Mile. Pompilian. A diagram is given 
of the apparatus, which allows of simultaneously measuring 
the respiratory exchanges and heat evolved by a man over 
a long period. The heat is determined by reading the 
inlet and outlet temperatures of a measured flow of water, 
the regulation of the temperature of the calorimeter being 
made automatically at any desired point between 12° C. 
and 24° C. The apparatus was standardised electrically 
with a possible error of o-5 per cent.—The réle of the 
chromotropic phenomena in the study of biological and 
psychophysiological problems ; Romuald Minkiewicz.—The 
prophylaxy of glandular cancer of the prostate: A. 
Guépin.—The production in medicine of static effects by 
high frequency resonators: H. Guilleminot. 
DIARY OF SOCIETIES. 
THURSDAY, DECEMBER 13. 
Rovat Society. at 4.30.—The Relation between Breaking Stress and 
Extension in Tensile Tests of Steel: A. Mallock, F R.S.—On the 
Intensity of Light Reflected from Transparent Substances: Prof. R C. 
Maclaurin.—Contributions to our Knowledge of the Poison Plants of 
Western Australia, Part ii., O2rylobinm: parviflorum. Lobine: E. A. 
Mann and Dr. W. H. Ince.—Experiments on the Length of the Kathode 
Dark Space with Varying Current Densities and Pressures in Different 
Gases: F. W. Aston.—An Examination of the Lighter Constituents of 
Air: J. ©. Coates.—The Velocity of the Negative Ions in Flames: 
E. Gold.—The Electric or Magnetic Polarisation of a Thin Cylinder of 
Finite Length by a Uniform Field of Force: Dr. 1. H. Havelock.— 
Further Observations on the Effects produced on Rats by the Trypano- 
somata of Gambia Fever and of Sleeping Sickness: H. G. Plimmer. 
Society oF ARTs, at 4.30.—The Indian Mohammedans: their Past, 
Present, and Future: A. Yusuf Ali. 
Lonpon [NstiTuTIoN, at 6.—Tadpoles—a Study in Embryology: D. 
J. W. Jenkinson. 
MATHEMATICAL SOCIETY. at 5.30.—On the Form of the Surface ofa Search- 
light Reflector: C. S. Jackson.—The Potential Equation and Others 
with Function given on the Boundary: L. F. Richardson.—On the 
Limits of Real Variants: J. Mercer.—The Asymptotic Expansion of 
Intestal Functions defined by Generalised Hypergeometric Series: Rev. 
. W. Barnes.—The Diophantine Equation 1+”-—Ny"=s: Major P. A. 
Ma Maser —The Uniform Convergence of Fourier’s Series: Dr. E, W. 
Hobson. 
FRIDAY, DECEMBER 14. 
PHYSICAL SOCIETY, 7 p.m. to 10 p.m.—Second Annual Exhibition of Elec- 
trical, Optical, and other Physical Apparatus. 
Rovat ASTRONOMICAL SOCIETY, at 5.—(1) Observations of Comet c, 1905, 
and Comets a and 4, 1906, from Photographs taken with the 30-inch 
Reflector of the hompson Equatorial ; (2) Pogson’s Observations of 
U Geminorum, edited by H. H. Turner: Royal Observatory, Greenwich. 
—Hansteen’s Eclipse at Stiklastad, ro30 August 31: P. H. Cowell.—The 
Proper Motion of Castor: A. C. D. Crommelin.—Note on some Proper 
Motions derived from a Comparison of Carrington’s Catalogue, 1855: 
W. G. Thackeray.—Note on the Approaching Return of Halley's Comet : 
A. C. D. Crommelin.—On the Accidental Production of Temporary 
Errors of Division on a Graduated Circle: W. M. Witchell —Probable 
Papers: (t) Note on Silicon in the Chromosphere ;(2) The Enhance Lines 
of Iron in the Region C to F: A. Fowler.—tstimate of the Number of 
Stars within Certain Limits of Proper Motion: W. G. Thackeray.— 
Discussion (time permitting): Possibility of Improving the Places of 
NO. 1937, VOL. 75 | 
NATURE 
| DECEMBER 13, 1906 
Reference Stars for the Astrographic Catalogue: H. H. Turner.—Solar 
Parallax Papers, No. 5, Photographic Places of Stars in the Paris Eros 
Circular; A. R. Hinks. 
INSTITUTION OF CivIL ENGINEERS, at 3.—Mechanical Improvements in 
the Drainage ot the Bedford Level: A. Carmichael. 
INSTITUTION OF MECHANICAL ENGINEERS, at 8.—Dyscussion : Steamasa 
Motive Power for Public Service Vehicles : T. Clarkson.—ProbablePaper : 
Lighting of Railway Premises ; Indoor and Outdoor: H. Fowler. 
MALACOLOGICAL Sociery, at 8,—Description of Latirus (Peristernia) 
Sowerbyi, sp.n.: J. Cosmo Melvill.—On the Anatomy of Tagelus gibbus 
and 7. divisus: H. H. Bloomer. —Descriptions of two New Helicoid 
Forms from German New Guinea: J. H. Ponsonby. 
MONDAY, DECEMBER 17. 
SocioLoGicaL SociETy, ‘at 8.—Sociology as a Province of Biology: M. 
Maxweiler. 
Society oF ARTS, at 8.—Artificial Fertilisers : Potassic Fertilisers: A. D. 
Hall. 
INSTITUTE OF ACTUARIES, at 5.— On the Error introduced into Mortality 
Tables by Summation Formulas of Graduation: G. King. 
TUESDAY, DECEMBER 18. 
Roya STATISTICAL SOCIETY, at 5 
Sociery oF Arts, at 8.—Basket Making: Thomas Okey. 
INsTITUTION OF CIviL ENGINEERS, at 8.—Mechanical Considerations in 
the Design of High-tension Switch-gear: H. W. E. Le Fanu. 
WEDNESDAY, DECEMBER 19. 
Sociery or Arts, at 8.—Modern Developments of Flour-milling: A. E. 
Humphries. 
Royat METEOROLOGICAL SocigTy, at 7.30.—The Guildford Storm of 
August 2, 1906: Admiral J. P. Maclear.—The Metric System in Meteor- 
ology : R. Inwards. 
Royat Microscoricat Society, at § —Exhibition of Slides from the 
Collection presented to the Sociery by Mr. Jas. Hilton. 
THURSDAY, DECEMBER 20. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—The Track Circuit as 
Installed on Steam Railways: H. G. Brown. 
LinNEAN SOCIETY, at 8.—Botanical Results of the Third Tanganyika 
Expedition, 1904-5: Dr. A. B. Rendle and others.—Fossil Foraminifera 
of Victoria ; the Balcombian Deposits of Port Phillip: Ff. Chapman.— 
Exhibition: Albino Woodlice: Wilfred Mark Webb. 
CHEMICAL SocigtTy, at 8.30.—A New Laboratory Method for the prepar- 
ation of Hydrogen Sulphite: F. R. L Wilson.—The Reaction of Acids 
with Methyl Orange: V. H. Veley.—(1) Contributions to the Study of 
the Calcium Phosphates, I., The Hydrates of the Calcium Hydrogen 
Orthophosphates ; (2) Contributions to the Study of the Calcium Phos- 
phates, II., The Action of Ammonia Gas on the Calcium Hydrogen 
Orthophosphates : H. Bassett, jun. 
CONTENTS. PAGE 
The Use of Preservatives. By C. Simmonds 145 
Mathematics of Bodily Movements. .... 146 
Goethe as Mineralogist and Geologist ... . 146 
The Chemical Structure of Cellulose. By Dr, 
Arthur Harden = «7 ."'2> 2 Spee. Ge) ee 
Our Book Shelf :— 
Andoyer: ‘‘Cours d’Astronomie. Premiére Partie : 
Astronomie Theorique.”-—A. S, E. 3 148 
Binet: ‘‘ Les Révélations de l'Eeriture d’apres 1 un 
Contr6le scientifique” : 148 
Miller : ‘‘ The Cyanide Process”. . 149 
Vincent: ‘‘ Hiphway and Byways in Berkshire ” 149 
Letter to the Editor: 
Geological Survey of Canada.—Prof. Frank D. 
Adamsi-7> 6 149 
Notes on Ancient British Monuments. " (Mustrated. ) 
Ly Sir Norman Lockyer, K.C.B., F.R.S : 150 
Applications of the Microphone Principle. By 
Prof. Gisbert Kapp . . 153 
Sir Edward J. Reed, K.C, B. .F. Res By Dr. Francis 
Elgar, F.R.S. Ue a os, 2 eee aS 
Notes. (Illustrated. PEER So ooo sn WINS 
Our Astronomical Column :— 
Comet 1906g (Thiele) . . PP a cy es 159 
Comet 1906/ (Metcalf) Sele Baer ico 159 
A Meteorite in the Atlantic (October 17) . . Yee 159 
Some Remarkable Small Nebule. ....... 159 
The Period of 8 Cephei eas 5 6 159 
New Variable Stars . . . PB ported <6 159 
Observations of Phcebe in 1906 . 159 
American Gooseberry Mildew . : 160 
Recent Progress in Meer -optics, (Itustrate.) 
By Prof. P. Zeeman . : 160 
The Eruption of Vesuvius in April, 1906 163 
Russian Observations of the Solar Eclipse, August 
3o;igo5,, By Charles P) Butlers ass.) ai enemies 
University and Educational Intelligence <0) > OA: 
Societies and Academies. ........... = « 165 
DiaryiofiSocietiesis © 2. jist eee) LOS 
