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Bahoti or the “rains insect" (Bucella carniola): E. G. Hill, An oil extracted from this mite is used medicinally by the Mohammedans of Allahabad. Analysis shows that its chief constituent is myristodiolein, with small quantities of stearin, cholesterol and colouring matter.-Contributions to Oriental herpetology, ii., notes on the lizards in the Indian Museum, with descriptions of new forms and lists of species recorded from British India and Ceylon, and of specimens collected on Sinkip Island (East Sumatra) by the late Prof. Wood-Mason's collector (part i.): N. Annandale. The present contribution deals with the collection of Oriental geckos, eublepharids, agamids, slowworms and monitors in the Indian Museum. Three new forms and a doubtful fourth are described, while notes on the distribution and systematic position of a number of others are given.-Customs in the trans-border territories of the North-West Frontier Province: H. A. Rose. A contribution to the customary law of the trans-border tribes on the North-West Frontier of India.—The Agraharis of Sasaram : L. S. S. O'Malley.

WEDNESDAY, APRILó11. Society of Arts, at 8.—The Industrial Resources of the State of Man Grosso, Brazil: G. T. Milne.

THURSDAY, APRIL 13.
Royal Society, at 4.30.- Probabie Papers: A Quantitative Scores

Carbon Dioxide Assimilation and Leaf-temperature in Natural llure
tion : F. F. Blackman and Miss G. Matthaei.-On Colour Vision
Very Weak Light: Dr. G. J. Burch, F.R.S.-On a New Type of E'
tric Furnace, with a Redetermination of the Melting Point of Plariram
Dr. J. A. Harker.-The Refractive Indices of Sulphuric Acid : D
V. H. Veley, F.R.S., and J. J. Manley.-(1) The Improved Electrin
Micrometer (2) The Amplitude of the Minimum Audible Impalive
Sound: Dr. P. É. Shaw.-On the Intensity and Direction of tbe Farce of

Gravity in India : Lieut.-Colonel S. G. Burrard, R.E., F.R.S.
ROYAL INSTITUTION, at 5.-Synthetic Chemistry : Prof. R. Meldala

F.R.S. INSTITUTION OF ELECTRICAL ENGINEERS, at 8.-The Alternaring Cry rent Series Motor: F. Creedy:-Discussion of Mr. Bion ), Asd, Id

address to the joint meeting at St. Louis. INSTITUTION OF MINING AND METALLURGY, at 8.-The Kedabeg Cape

Mines : Gustav Köller --Refining Gold Bullion and Cyanide Precipitates with Oxygen Gas: T. Kirke Rose. -Wood Gas for Power Purposes and Gas Generator : G. M. Douglas. ---Notes on the Prestea District, Coast Colony: P. Poore.-Notes on the New Dbarwar Gold Field of India : R. Ó. Ahlers. The Cause of Border Segregation in Igneous Magmas: J. Park. MATHEMATICAL Society, at 5.30.-On Irreducible Jacobians of Dera Six : P. W. Wood.-On Fermat's Numbers and the Converse offe mat's Theorem : A. E. Western.-On the Strains that accompasy Bes ing: Prof. A. E. H. Love.

FRIDAY, APRIL 14. Royal INSTITUTION, at 9.—The Law of Pressure of Gases below Air>

sphere : Lord Rayleigh. PHYSICAL Society, at 8.-On Ellipsoidal Lenses : R. J. Sowter.-IT

Determination of the Moment of Inertia of the Magnets used in Measurement of the Horizontal Component of the Earth's Fieli: 16 Exhibition of a Series of Lecture Experiments illustrating the Ppeper ries of the Gaseous lons produced by Radium and other Source

Dr. W. Watson, F.R.S. Royal. ASTRONOMICAL SOCIETY, at 5. MALACOLOGICAL SOCIETY, at 8.-Anatomical and Systematic Nites on

Dorcasia, Trigonephrus, Corilla, Thersites, and Chloritis: Heory A. Pilsbry.--Some Account of the Anatomy of Cassidaria rugosa, I Alexander Reynell.-Notes on a small Collection of Shells true the Victoria Falls, Zambesi River : H. B. Preston.-Descriptions of su New Species of Land Shells from South Africa : H. Burnup.

SATURDAY, APRIL 15. Royal INSTITUTION, at 3.-Some Controverted Questions of Opus

Lord Rayleigh.

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DIARY OF SOCIETIES.

THURSDAY, April 6. ROYAL SOCIETY, at 4.30.-On Reciprocal Innervation of Antagonistic

Muscles, Seventh Note : Prof. C. S. Sherrington, F.R.S.-The Influence of Cobra-Venom on the Proteid Metabolism : Dr. James Scott.— Further Experiments and Histological Investigations on Intumescences, with some Observations on Nuclear Division in Pathological Tissues : Miss E. Dale.-On the Toxin-Antitoxin Reaction, with Special Reference to the Neutralisation of Lysin by Antilysin: J. A. Craw.--On the Nature of the Silver Reaction in Animal and Vegetable Tissues : Prof. A. B. Macallum.-On Endophytic Adaptation shown by Erysiphe Graminis DC. under Cultural Conditions: E S. Salmon.-Ovulation and De

generation of Ova in the Rabbit : Walter Heape. CHEMICAL Society, at 8.-The Basic Properties of Oxygen at Low

Temperatures. Additive Compounds of the Halogens with Organic Substances containing Oxygen : D. McIntosh.-Note on the Interactiun of Metallic Cyanides and Organic Halides: N. V. Sidgwick. - The Chemical Dynamics of the Reactions between Sodium Thiosulphate and Organic Halogen Compounds. Part II. Halogen-substituted Acetates : A. Slator.--The Chemical Kinetics of Reactions with inverse Reactions. The Decomposition of Dimethylcarbamide : C. E. Fawsitt. -The Tautomerism of Acetyl Thiocyanate : A. E. Dixon and J. Hawthorne. A Method of Determining the Specific Gravity of Soluble Salts by Displacement in their own Mouber Liquor, and its Application in the Case of the Alkaline Halides : J. Y. Buchanan.-The Combination of Mercaptans with Unsaturated Ketonic Compounds : S: Ruhemann.-A new Formation of Acetylcamphor: M. O. Forster and Miss H. M. Judd. Preparation and Properties of 1:4:5-Trimethylglyoxaline : H. A. D. Jowett.--Bromomethylheptylketone: H. A. D. Jowelt-On the Exis. tence of a Carbide of Magnesium: J. T. Nance.-The Action of Carbon Monoxide on Ammonia : H. Jackson and D. N. Laurie. - Isomeric Salts of the Type NR,R.,H3. A Correction. Isomeric Forms of d-Bromo. and d-Chloro-camphorsulphonic Acids : F. S. Kipping.-Isomerism of a-Bromo- and a-Chloro-camphor : F. S. Kipping.---Phenylethylamine :

F. S. Kipping and A. E. Hunter. INSTITUTION OF ELECTRICAL ENGINEERS, at 8.- Discussion of the

Report to Council on the International Electrical Congress at St. Louis, by W. Duddell, and of Papers on Systems of Electric Units Published in

Part clxx. (last issue) of the Journal. Royal INSTITUTION, at 5.-Synthetic Chemistry : Prof. R. Meldola,

F.R.S. RÖNTGEN SOCIETY, at 8.15.-Exbibition Evening. LINNEAN Society, at 8.-Intra-axillary Scales of Aquatic Mono. cotyledons : Prof. R. J. Harvey Gibson. - A further Communication on

the Study of Pelomyra palustris : Mrs. Veley, SOCIETY OF ARTS, at 4.30.-The Prospects of the Sban States : Sir J.

George Scott Civil AND MECHANICAL ENGINEERS' SOCIETY, at 8.-The Design of Concrete-Steel Beams : W. Noble Twelvetrees.

FRIDAY, APRIL 7. ROYAL INSTITUTION, at 9.-American Industry : Alfred Mosely. INSTITUTION OF Civil ENGINEERS, at 8.--Cofferdams for Dock Use :

R. G. Clark.-- Bath Corporation Waterworks Extension : J. R. Fox. GEOLOGISTS' ASSOCIATION, at 8.- The Relative Ages of the Stone Imple

ments of the Lower Thames Valley: M. A. C. Hinton and A. S. Kennard.

SATURDAY APRIL 8. ROYAL INSTITUTION, at 3.-Some Controverted Questions of Optics:

Lord Rayleigh. THE ESSEX FIELD CULB, at 6.30. (At Essex Museum of Natural History, Stratford). --- Twenty-fifth Annual Meeting -Natural History Museums : F. W. Rudler.

MONDAY, APRI1, 10. INSTITUTION OF CIVIL ENGINEERS, at 8.-" James Forrest" Lecture :

Unsolved Problems in Electrical Engineering i Colonel R E. B. Cromp.

ton, C.B. ROYAL GEOGRAPHICAL Society, at 8.35.-The Problem of the Upper Yangtse Provinces and their Communications : Colonel C. C. Manifold.

TUESDAY, APRIL 11. ROYAL INSTITUTION, at 5.--Tibet : P. Landon. INSTITUTION OF Civil ENINFEKS, at - The Maintenance and Strengthening of Early Iron Bridges : W. Marriott.

6

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CONTENTS.

PAGE Psychology and Physiology. By W. McD.

529 Radium and Radio-activity. By R. J. S. Oil Fuel.

531 The Dynamics of Chemical change. By Dr. H. M.

Dawson
Recent Earthquakes
Our Book Shelf :-

Lang and Abrahams: “A German-English Dictionary

of Terms used in Medicine and the Allied

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“Règles internationales de la Nomenclature 200-

logique.”—R. L.
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A New Thallium Mineral.-G. T. Prior

534 The Legendary Suicide of the Scorpion.-Prof.

Edward B. Poulton, F.R.S. . .
Propagation of Earthquake Waves.-M. P. Rudzki

534 Notes on Stonehenge. V. On the Star Observa.

tions made in British Stone Circles. (Illustrated.)

By Sir Norman Lockyer, K.C.B., F.R.S.
British Association Geological Photographs. (II.-

trated.)
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Comet 1905 a (Giacobini)
Photography of the Corona without a Total Eclipse
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Constancy of “Spark” Wave-lengths ! Statistics of Variation. By F. A. D.

Interrupters for Induction Coils. (Illustrate I).
University and Educational Intelligence
Societies and Academios
Diary of Societie

535

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