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by Mr. A, E. Hall from larvæ collected near Sheffield.-Mr. On a relation between molecular heat and the dielectric consas W. Farren exhibited four varieties of Papilio machaon from by M. Runolfsson.-On the employment of guard-ring coWicken Fen; also a series of two or three species of Nepticula densers and absolute electrometers, by M. P. Curie.-On je pinned on pith with the "minutien Nadeln," for the purpose of

density of oxide of carbon and the atomic weight of carbon, showing these pins.-Canon Fowler exhibited specimens of

M. A. Leduc. -Critical reduction of Stas's fundamental deler Xyleborus perforans, Woll., which had been devastating the

minations on potassium chlorate, by M. G. Hinrichs.-023 sugar-canes in the West Indies.-Mr. E. B. Poulton, F.R.S., chloro-iodide of carbon, by M. A. Besson.-Action of anby showed, by means of the oxy-hydrogen lantern, slides of various

drous hydrofluoric acid on the alcohols, by M. Maurice Meslas larvæ and pupæ, in illustration of his paper, read at the October -Action of sulphuric acid on citrene, by MM. G. Boucharia meeting, entitled, Further experiments upon the colour and J. Lafont.-Analysis of sulphate of quinine and quantita relation between certain lepidopterous larvæ and their surround determination of quinine in presence of the other cinch ings." He stated that he believed that nineteen out of twenty alkaloids, by M. L. Barthe.-On the assimilation of the oma.es larvæ of Geometride possessed the power of colour adjustment. to the abomasum of the Ruminants from the point of vier Mr. F. Merrifield, the Rev. J. Seymour St. John, and Mr. the formation of their mucous membrane, by M. J. A. Corde Jacoby took part in the discussion which ensued. -Mr. F. Mer

-On the differential osteological characters of rabbits and hars rifield read a paper entitled, “The effects of temperature on

comparison with leporides, by M. F. X. Lesbre.— Remarks the colouring of Preris napi, Vanessa atalanta, Chrysophanus the preceding communication, by M. Miloe-Edwards.- Mlyny phlaas and Ephyra punctata," and exhibited many specimens sporidia of the bile-duct of fishes ; new species, by M. ? thus affected. Mr. Poulton, Dr. F. A. Dixey, Mr. Elwes, Thélohan.-Method for ensuring the conservation of vitality a and Mr. Jenner-Weir took part in the discussion which plants brought from distant tropical regions, by M. Man ensued. -Mr. Kenneth J. Morton communicated a paper en. | Cornu.-On the difference of transmissibility of pressures ac titled, “Notes on Hydroptilidæ belonging to the European | ligneous, herbaceous, and suculent plants, by M, Gets Fauna, with descriptions of new species."-Dr. T. A. Chap- Bonnier. --On the structure of the Gleicheniacea, by M. Gem man read a paper entitled, “On some neglected points in the Poirault.-Salivary secretion and electric excitation, by M structure of the pupa of Heterocerous Lepidoptera, and their

Wedensky.--Action of the extract of cows' blood on anime probable value in classification ; with some associated observa

affected with glanders, by M. A. Babes. — The blizzard tions on larval prolegs." Mr. Poulton, Mr. Tutt, Mr. Hamp

December 6 and 7, 1892, by M. Cb. V. Zenger.
son, and Mr. Gahan took part in the discussion which ensued.
- Mr. J. Cosmo-Melvill communicated a paper entitled,
“ Description of a new species of butterfly of the genus

BOOKS and SERIALS RECEIVED
Calinaga, from Siam.”—Mr. W. L. Distant communicated a BOOKS. --The Elements of Graphic Statics : L. M. Hoskins (Ms.

-Qualitative Analysis Tables and the Reactions of certain irganic paper entitled, “Descriptions of new genera and species of

stances : Dr. E. A. Letts (Belfast, Mayne and Biyd).-L rd Rosst." Neotropical Rhynchota."

Gospel : Modernized by E. L. Garbett (W. Reeves) -An Arlas ce Paris.

nomy : Sir R. S. Ball (Philip). - Pioneers of Science : Prof. O. Lodet

millan). -Collected Mathematical Papers of Prof. A. Cayley: Vai Academy of Sciences, December 12.-M. d'Abbadie in the (Camb. Univ. Press). - British Journal Photographic Almanac chair.-On certain asymptotic solutions of differential equations, (Greenwood).-A Manual of Bacteriology: Dr. G. M. Sternbera ! by M. Emile Picard. -Description of a new electric furnace, York, Wood). - La Terre Les Mers et Les Continents : F. Priet Pro

J. B. Baillière). by M. Henri Moissan. The furnace consists of two bricks of

SERIALS -L'Anthropologie, Ton. 3, No. 5 (Paris, Masson)-Em quicklime one upon the other, the lower one of which is pro Journal, December (Macmillan and Co ).- Journal of the Chemical sca vided with a longitudinal groove which carries the two electrodes, December (Gurney and Jackson). and between them is a small cavity serving as crucible, which contains a layer of several centimetres of the substance to be

CONTENTS. experimented upon. The latter may also be contained in a small carbon crucible. The highest temperature worked with Mr. C. Dixon on Bird - Migration ....... 3 was 3000° C., produced by a current of 450 amperes and 70 Domestic Electric Lighting ........... volts consuming 50 horse-power. In the neighbourhood of Our Book Shelf:2500°, lime, strontia and magnesia crystallized in a few minutes. Vasey : “Grasses of the Pacific Slope, including At 3000° the quicklime composing the furnace began to run like Alaska and the Adjacent Island"-). G. B.. water. At the same temperature the carbon rapidly reduced Gray: “Aids to Experimental Science".... the oxide of calcium to the metallic state. The oxides of nickel, Allen : “Science in Arcady " ......., cobalt, manganese, and chromium were reduced in a few seconds Letters to the Editor :at 2500°, and a button of uranium weighing 120 gr. was ob Macculloch's Geological Map of Scotland.-Prof. tained from the oxide in ten minutes at 3000°.- Action of a

W. Judd, F.R.S. ... high temperature on metallic oxides, by M. Henri Moissan. Glaciers of Val d'Herens.-William Sherwood In all the experiments, the simple elevation of temperature pro Ancient Ice Ages.-T. Mellard Reade. duced the crystallization of all the metallic oxides experimented The Earth's Age.---Bernard Hobson; Dr. Alfred upon.-On the existence of the diamond in meteoric iron of the

Russel Wallace ....... Cañon Diablo, by M. C. Friedel. A careful analysis has placed The Colours of the Alkali Metals.-Wm. L. Dudles beyond doubt the existence of diamond in a portion of the Osmotic Pressures.-Prof. Spencer Pickering,F.RS Arizona meteorite presented to the Ecole des Mines. It occurs On a Supposed Law of Metazoan Development.-H. in small grains or a fine powder disseminated through the iron.

Assheton . .... .
On the laws of expansion of Auids at constant volume; coefficients Oxygen for Limelight.-T, C. Hepworth
of pressure, by E. H. Amagat.-On the means of diminishing The Star of Bethlehem .............
the pathogenic power of fermented beet-root pulp, by M. Arloing. | Fujisan. (Illustrated.) By J. W. ). .
-On the employment of free balloons for meteorological observa. | The Galileo Celebration at Padua. By Prof. Antonia
tions at very great heights, by M. Ch. Renard.-Photographic Favaro . . . . . . . . . . . . . . . . . . .
observations of Holmes's comet, by M. H. Deslandres.-On the Sir Richard Owen ...........
locus of the mean distances of a point of an ordinary epicycloid, I Notes ...................
and of the successive centres of curvature which correspond to Our Astronomical Column:-
it, by M. G. Fouret.-On ordinary linear differential equations, Comet Holmes (November 6, 1892)....
by M. Jules Cels.—On the common cause of the evaporation Comet Brooks (November 20, 1892)....
and surface tension of liquids, by M. G. van der Mensbrugghe. Swift's Cornet .::.

-On the relation between the velocity of light and the size of Ultra-violet Spectrum in Prominences .
the molecules of refracting liquids, by M. P. Joubin. From a Ephemeris for Bodies Moving in the Biela Orbit
comparison of a large number of substances the following law is Madras Meridian Circle Observations ...
deduced : The refraction is proportional to the square root of | The Juba River ..
the quotient of the weight of the molecule by the number of | Breath Figures. By W. B. Croft.
constituent atoms (mean weight of the atom). –On the anomalous Scientific Serials ............
propagation of the light waves of Newton's rings, by M. Ch. Societies and Academies ...
abry.-On transparent diffusing globes, by M. Frédureau. - | Books and Serials Received ... ..

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