336 



NA TURE 



[February i, 1906 



part of the phosphoric acid leaves the leaf and goes 

 towards the ovule in the state of a soluble mineral phos- 

 phate, whilst another part is displaced from its state of 

 combination with nitrogenous material. — The properties of 

 colloids and the dynamic interpretation of cell division : 

 Angel Gallardo. — On Leposphilus labrei and on the family 

 of the Philichthydae : A. Quidor. — The action of extract 

 of the interstitial gland of the- testicle on the development 

 of the skeleton and on the genital organs : P. Bouin and 

 P. Ancel. — Experimental researches on the proportions of 

 chloroform contained in the organism during chloroform 

 anaesthesia : J. Tissot. — The action of sulphate of 

 hordenine on the circulation . L. Camus. With large 

 doses there is an increase of the blood pressure accom- 

 panied with modifications in the rhythm and amplitude of 

 the pulsations; small doses have little effect on the blood 

 pressure, but give rise to important changes in the number 

 and amplitude of the pulsations. — The reconstitution of an 

 ancient Oligocene lake on the north side of the massif 

 of Mont Dore : Ph. Glangeaud. — New observations on the 

 geology of the Sahara : Rene'' Chudeau. — On the form- 

 ation of the network of the reticulated Nummulites : Jean 

 Boussac. — The oceanic circulation : MM. Thoulet and 

 Chevalliei". 



DIARY OF SOCIETIES. 



THURSDAY, February i. 

 Royal Society, at 4.30.— On the Filtration of Crystalloids and Colloids 

 through Gelatin, with Special Reference to the Behaviour of Hemolysins : 

 J. A Craw.— Chemical Action of Bacillus lac/is aerogenes (Escherich) 

 on Glucose and Mannitol : Production of 2 : 3-Bu.tyleneglyc.0l and 

 Acetylmethylcarbinol : Dr. A. Harden and G. S. Walpole.— On Voges and 

 Proskauer's Reaction for Certain Bacteria : Dr. A. Harden.— The 

 Quantitative Estimation of Small Quantities of Nickel in Organic Sub- 

 stances : H. W. Armit and Dr. A. Harden.— The Alcoholic Ferment of 

 Yeast Juice: Dr. A. Harden and W. I. Young.— On the Function of 

 Silica in the Nutrition of Cereals. Part I. : A. D. Hall and C. G T. 

 Morison.— On the Origin of the Sertoli or Foot Cells of the Testis; 



C. E. Walker and Miss A. L. Embleton.— Studies on Enzyme Action— 

 Lipase ; Maurice Nicloux.— A Further Communication on the Specificity 

 and Action in Vitro of Gastrotoxin : Dr C. Bolton. 



Chemical Society, at 8.30.— Hydroxylamine-a/SdisuIphonates (Structural 

 Isomerides of Hydroxyaminosul, hales or HydroxvIamine.00 ><i.ul- 

 phonales): T. Haga.— Studies in the Camphane Series. Part XXI. 

 Benzenediazo-i^-Semicarbazino-camphor and its Derivatives ; M. O 

 Forster.— The Relation between Absorption Spectra and Chemical 

 Constitution. Parti. The Chemical Reactivity of the Caibonyl Group: 

 A. \V. Stewart and E. C. C. Baly.— (1) The Relation between Absorption 

 Spectra and Chemical Constitution. Part II. The Quinones and 

 a-Diketunes ; (2) The Relation between Absorption Spectra"and Chemical 

 Constitution. Part III. The Nitranilines and the Nitrophenols : E. C. C 

 Baly and A. W. Stewart.— The Action of Light on Benzylidenephenyl- 

 hydrazine: F. D. Chattaway.— The Union of Chlorine and Hydrogen • 



D. L Chapman and C. H. Burgess.-Note on the Molecular Weight of 

 Adrenaline : G. Barger and| A. J. Ewins.— The Critical Temperature 



_and Value of ML/Oof Some Carbon Compounds: J. Campbell Brown. 



at 5.— The Significance of the Future in the 'theory 



of Evolu 

 Civil ani 



Oeol 



: Benjamin Kidd 



D MECHANICAL ENC 



: F. L Watson. 



Society, at 8.— The Percy Sladen Trust Exped 

 Indian Ocean in H.M.S. Sealark : J. Stanley Gardiner. 

 Society op Arts, at 8.— Howard Lecture : High Speed Electric 

 Machinery, with Special Reference to Steam-Turbine Machines : Prof 

 S. P. Thompson, F.R.S. 



FRIDAY, February 2. 

 Royal Institution, at 9.— The Electric Prod 

 phere : Prof. S. P. Thompson, F.R S. 



ists' Association, at 7.30. — Annual General Meeting. Presiden 

 tial Address: The Study of Fossil Fishes : Dr. A. Smith Woodward 



SATURDAY, February 3. 

 oval Institution, at 3.— Advances in Microscopy: J. W. Gordon. 

 MONDAY, February 5. 

 it 5.— General Monthly Meeting. 

 — Modern Warships: Sir Willi 



:iety, at 8.— Destructor Bye- 

 the 



of Nittates from the 



1 Whil 



K C.B., 



;:c,il Til 



Royal Institutioi 

 Society of Arts, a 



F.R.S. 

 Society of Chemical Industry, at 8.— The Loss of Nitr 



Chamber Process. Part II. : J. K. H. Inglis. 

 Victori < Institute, at 4 30.— On Biological Changes 



Prof. J. Logan Lobley. 



TUESDAY. February 6. 



Royal Institution, at 5. — Food and Nutrition : Prof. W. Stirling. 



Society of Arts, at 4.30.— Imperial Immigration: O. C. Beale. 



Zoological Society, at 8.30.— On Trichorhiza, a New Hydroid Genus : 

 E. S. Russell.— Notes on the Histology and Physiology of the Placenta 

 in Ungulata ; Dr. J. W. Jenkinson.— Description of a New Fly of the 

 Family Tabanida: : Miss G. Ricardo.— A List of the Mammals obtained 

 by Messrs. R. B Woosnim and R. E. Dent in Bechuanaland : H 

 Schwann. 



Institution of Civil Engineers, at B. — Adjourned l>. 

 Railway-Gauges of India £F. R. Upcott. 



WEDNESDAY, Ffhruary 7. 



Society of Public Analysts, at 8.— President's Annual Address, 

 followed by Ordinary Meeting.— Note on Dutch Cheese : C. H. Cribb.— 

 The Assay of Mercury Ores: G. T. Holloway.— The Purification of 

 Zinc and Hydrochloric Acid : Dr. L. T. Thome and E. H. Jeffers.— The 

 Facing of Rice: C. H. Cribb and P. A. E. Richards. 



Geological Society, at 8.— On the Catboniferous Limestone (Avonian)of 

 the Mendip Area (Somerset), with Especial Reference to the Palsonto- 

 logical Sequence : T. F. Sibley. — The Igneous Rocks Associated with 

 the Old Red Sandstone of the Mendips : Prof. S. H. Reynolds. 



Society of Arts, at S. — Progress in Electric Lighting : Leon Gaster. 



THURSDAY, February 8. 



Royal Society, at 4.30.— Probable Papers: On Roche's Ellipsoids and 

 on Allied Problems 'Relating to Satellites: Sir George H. Darwin, 

 K.C.B, F.R.S.— On Periodicities in Sun spots : Prof. A. Schuster, 

 F.R.S.— Explosions of Coal-Gas and Air: Prof. B. Hopkinson. — Polarisa- 

 tion in Secondary Riintgen Radiation : C. G. Barkla.— Constants of 

 Explosion of Cordite and of Modified Cordite : Robert Robertson. 



Institution of Electrical Engineers, at S. — Technical Considerations 

 in Electric Railway Engineering : F. W. Carter (Conclusion 0/ 

 Discussion).— Crane Motors and Controllers : C. W. Hill. 



Royal Institution, at 5.— The Significance of the Future in the Theory 

 of Evolution: Benjamin Kidd. 



FRIDAY, Febr 

 at 9.— Eclipse Pri 



aryIc 



and Observations : H. 

 all, F.R.S. 



4oYAl. Astronomical Society, at 5.— Anniversary Meeting. 



'hysical Society, at 8. -Annual General Meeting. 



tovAi. Geographical Socifty, at s 30 (Research Department).— The 

 Ruins of Rhodesia and the Probable Date of Outside Intrusions in East 

 Africa: Discussion to be opened by D. Randall Maclver. 



/Ialacological Society, at 8.— Annual Meeting.— On Pearl-Oyster 

 Culture and Pearl Fishing : T. H. Haynes.— Irish Molluscs and their 

 Habitats : R. J. Welch. 



nstitution of Civil Engineers, at 8. — Electric Driving at the Locomo- 

 tive Works of the North London Railway : R. H. Mackie. 



SATURDAY, Fe 

 1, at 3.— Advances in 



MONDAY, FEBt 

 Spolswood Green. 



ticroscopy: I. W. Gordo 



-The Geography of the Spanish 



NO. 1892, VOL. 73] 



CONTENTS. page 



The Philosophic Foundations of Science. By Prof. 



Arthur Schuster, F.R.S 313 



The^Intelligence of Animals. By Lord Avebury, 



F.R.S 315 



Maxwell's Theory of Light 316 



Indian Hermit Crabs. By L. A. B 317 



Our Book Shelf :— 



Dorsey : " Traditions uf the Caddo " 317 



Marcolongo : " Meccanica R.iziunale " 3 1 8 



Ziegler : " Die Vtrerbungslehre in der Biologie " . . 318 



Carrel : "An Analysis of Human Motive" 318 ■ 



Loescher : " Deutscher Kamera Almanach," 1906 . . 318 

 Letters to the Editor: — 



Fresnel's Theory of Double Refraction. — James 



Walker ■ . . 319 



On an Alleged New Monkey from the Cameroons. — 



Dr. Henry O. Forbes 319 



Forests and Rivers 319 



Variation of Glaciers. By T. G. B 320 



The Revolution of the Corpuscle. By A. A. Robb . 321 



Notes. (Illustrated.) 321 



Our Astronomical Column : — 



Astronomical Occurrences in February 326 



Discovery of a New Comet 326 



Comet 1905c (Giacobini) 326 



Observations of Standard Velocity Stars 326 



A Fire near ihe Mount Wilson Observatory 326 



Memoirs of the Royal Society of Naples. (Illus- 

 trated.) By R. T. G 327 



Physiological Economy in Nutrition. By W. D. H. 328 



Photography in Natural Colours. By C. J 330 



The International Meteorological Conference at 



Innsbruck 331 



University and Educational Intelligence 332 



Societies and Academies 334 



Diary of Societies 336 



