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Chameleon isabellinus, Rhampholeon platyceps, and R. rachyurus.-Mr. R. Lydekker read a memoir on some Zeugloont, and other Cetacean remains from the Tertiaries of the Caucasus. Mr. Martin Jacoby read the descriptions of some ew genera and new species of Phytophagous Coleoptera from Madagascar.

E Linnean Society, November 3.-Prof. Stewart, President, n the chair.-The Rev. Prof. Henslow exhibited an instrument sed in Egypt for removing the end of the sycamore fig, and ave some account of the mode of cultivation. Mr. A. Smith Voodward exhibited and made remarks on some supposed ossil lampreys (Paleospondylus gunni) from the old red sandtone of Caithness.-The Rev. E. S. Marshall exhibited some ybrid willows from Central Scotland, believed to be rare or ew to Britain. Mr. G. N. Douglass exhibited the train of a eahen which had assumed the male plumage. The bird, which vas reared at the Castle Farm, Tilquhillie, near Banchory, N. B., vas believed to be about thirty years old at the time of its death, nd for some years previously had not laid any eggs. In the pinion of the exhibitor and others present the phenomenon

vas correlated with disease of the ovaries. Similar cases had occurred with fowls, pheasants, and black game, but not, so far is was known, with peafowl.-Mr. C. T. Druery exhibited ome new examples of apospory in ferns, namely a specimen of Athyrium filix fœmina var clarissima with pinna showing levelopment of prothalli by soral apospory, and a seedling Lastrea pseudomas cristata, showing prothalli developed posporously over general surface of frond (pan-apospory).Mr. J. E. Harting exhibited some live specimens of the shortailed fieldvole (Arvicola agrestis), and gave an account, from ersonal inspection of the serious damage done by this little odent upon the sheep-pastures in the lowlands of Scotland.Mr. A. B. Rendle exhibited some seedling plants of the sugarcane which had been raised in this country by Mr. Veitch.The discussion on several of these exhibitions having continued intil a late hour, a paper by Prof. Henslow, on a theoretical origin of endogens through an aquatic habit, was by consent adjourned to the next meeting of the Society, which will be held o-day.

Mathematical Society, November 10.-Prof. Greenhill, F.R. S., President, in the chair.-This was the annual general neeting and after the election of the gentlemen whose names are given on p. 616 (NATURE, vol. xlvi.) to serve on the council or the session 1892-93, the new President, Mr. A. B. Kempe, R.S., took the chair and at once called upon the retiring resident to read his valedictory address. Prof. Greenhill took is his subject collaboration in mathematics.-The following urther communications were made. Some properties of homogeneous isobaric functions, by E. B. Elliott, F.R.S. This ›aper is a sequel to one which the writer communicated at the une meeting entitled a proof of the exactness of Cayley's umber of seminvariants of a given type. The earlier part of the present paper supplies omissions in the preceding one nd in the remainder the theorem on which Mr. Elliott's rgument was based is transformed, and the result examined for s own sake without reference to the particular application.— In certain general limitations affecting hyper-magic squares, by . Roberts, F.R.S. The paper does not aim at making any ddition to the known ways of constructing magic squares. Typer-magic squares, as the writer regards them, include those alled by M. E. Lucas "carrées diaboliques," and also treated y Mr. A. H. Frost under the designation of "Nasik squares." The special form is of ancient origin. The second method ven by Moschopulus (thirteenth century) is a general one for rming such squares and they have been discussed by various odern authors. The writer's object is to show some limitaons to which they are subject when the elements are positive negative integers. Incidentally it appears that hyper-magic uares of oddly even orders cannot be formed of series of concutive natural numbers. There is some reason for believing at much ingenuity has been fruitlessly employed in trying form such squares. We may here mention that a very interting historical essay on the subject of magic squares has been blished by Dr. Siegemund Günther, in his work entitled ermischte Untersuchungen sur Geschichte der Mathematischen issenschaften" (Leipsic 1876). The subject has also been ught into connection with the "Geometry of Tissues," by M. cas and others (see the "Principii Fundamentali della Geotria dei Tessuti," par Edoardo Lucas, Torino, 1880).-Note the equation y = x(x-1) by Prof. W. Burnside. -Note on

=

secondary Tucker circles by Mr. J. Griffiths. The idea of this note sprang from the fact that if G,g, are two inverse points with respect to the circumcircle (ABC) whose centre is O i.e. such that OG x Og R, then the pedal triangles DEF, def of G,g, with regard to ABC are similar. Taking G to be one of the Brocard points, then (DEF) is a Tucker circle and (def) a secondary circle.-On a group of triangles inscribed in a given triangle ABC whose sides are parallel to connectors of any point P with A, B, C, by Mr. Tucker. If DEF, D'E'F', are a pair of such triangles they are readily seen to be in perspective. Their properties are considered with reference to the principal points and lines of the modern geometry of the triangle.-A note on triangular numbers by Mr. R. W. D. Christie.

PARIS.

Academy of Sciences, November 7.-M. de LacazeDuthiers in the chair.-Letter addressed to the President by the committee formed to celebrate the seventieth birthday of M. Pasteur.-Influence of the distribution of manures in the soil upon their utilization, by M. H. Schlosing.-Note on the reply of M. Berthelot to my note of October 24, by M. Th. Schloesing.Comparison of the magnetic observations of General Pevzoff in Central Asia with the data of the English magnetic charts, by M. Alexis de Tillo. General Michael Pevzoff, in his last exploring tour in Eastern Turkestan, made some careful determinations of magnetic declinations and inclinations. If these are compared with those published by M. Creack in the report of the Challenger expedition, it appears that in declination an average correction of +1°7 has to be applied to the latter, while the inclinations are practically identical.-On the new triangulation of France, by M. L. Bassot. This work was commenced in 1870. It comprised the establishment of a continuous chain between the Spanish frontier and Dunkerque, supporting the net on three base lines, and attaching it as far as possible to each of the parallel chains of the old triangulation. Also a new determination of the co-ordinates of the Panthéon, the fundamental point of the triangulation, the measurements of base-lines in terms of the international metrical standard, and the calculation of the new arc of meridian. It was found that, starting from the Paris base-line, the network was verified at Perpignan, at a distance of 6o, to within 1 in 250,000. Where the French system meets the English, Belgian, and Italian systems, the correspondence is found practically perfect, but on the Spanish frontier there exists a difference of 1 in 65,000 at present unexplained. The arc between Dunkerque and Carcassonne, as now calculated, exceeds that of Delambre by 44 7m., or I in 20,000.-Essay on a general method of chemical synthesis, by M. Raoul Pictet. On the fifth satel lite of Jupiter, by M. E. Roger. From the empirical formula for the distances of Jupiter's satellites

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the probable distances of any satellites yet undiscovered can be calculated. It appears that there may be one at distance 197, two others at 1'61 and 1'27, or a single one at 1'425, and others beyond the outermost satellite. The distances of those already known are 2'50, 6'05, 962, 15:35, and 2700.-On the transformations of dynamical equations, by M. Paul Painlevé.Lenticular liquid microglobules and their conditions of equilibrium, by M. C. Maltézos. The smallest drops of a liquid jet falling upon another liquid often assume a lenticular shape, one surface of which is more curved than the other. These are called microglobules. Their diameters were measured, and their volumes and masses calculated. The production of microglobules in all the liquids in Quincke's table was experimented upon.-Effects of weight on fluids at the critical point, by M. Gouy.-Dilatation of iron in a magnetic field, by M. Berget. An elegant experiment to exhibit the lengthening of an iron bar on magnetization, on the principle of Newton's rings. The bar in question, provided with a cap of black glass, presses against the flat side of a plano-convex lens screwed to the same stand. The bar is surrounded by a coil, which can be excited by a battery of accumulators. Magnetization is at once indicated by the expansion of the rings. On the dissipation of the electric energy of the Hertz resonator, by M. V. Bjerknes (see Wiedemann's Annalen, No. 9).-On the equality of potential at the contact of two electrolytic deposits of the same metal, by M. G. Gouré de Villemontée.-On the rotating power of the diamine salts, by M. Albert Colson.-Volumetric determination of the alkaloids, by M. E. Léger.-On the fixation of free nitrogen by

plants, by MM. Th. Schloesing, jun., and Em. Laurent.Observations on the preceding note, by M. Duclaux.-Observations on the preceding communications, by M. Berthelot. -On y-achroglobine, a new respiratory globuline, by M. A. B. Griffiths. On the axinite of the Pyrenees, its forms and its conditions of occurrence, by M. A. Lacroix.-On the subterranean river of the Tindoul de la Vayssière and the springs of Sallesla-Source (Aveyron), by MM. E. A. Martel and G. Gaupillat.— On the comparative anatomy of the stomach in Ruminants, by M. J. A. Cordier.-Remarks on some means of defence in the æolidians, by M. E. Hecht.-On the evolution of the brachial apparatus of some brachiopods, by MM. P. Fischer and D. P. Ehlert. On the mechanism of solution of starch in plants, by M. A. Prunet.-On the diuretic and ureopoietic action of the alkaloids of cod liver oil on man, by M. J. Bouillot.-Results obtained at the crystal works of Baccarat by the introduction of metastannic acid into putty powder, by M. L. Guéroult.

BERLIN.

Physiological Society, October 14.-Prof. Munk, president, in the chair.-Prof. Kossel gave an account of further researches on nucleinic acid, a compound which, in union with albumin, composes the proteids of the cell-substance. In earlier researches he had studied the acid as derived from yeast cells and salmon-milt, and found that while the substances obtained from these two sources differed in many respects, they resembled each other in that the ratio of phosphorus to nitrogen was in both as I to 3, and that they both yielded nuclein-bases during their decomposition. More recent researches on the nuclein derived

from the leucocytes of the thymus gland have shown that the nucleinic acid it yields is inore like that from milt, and resembles the product obtained from yeast even less than does the product from milt. The relationships of nucleinic acid to the chromatin bodies of the histologists were minutely considered.-Prof. Gad brought forward a theory of the excitatory process in muscles, based upon the theory of Fick, but further developed and supported by experiments on tetanized muscles.

DIARY OF SOCIETIES.

LONDON.

THURSDAY, NOVEMBER 17.

ROYAL SOCIETY, at 4.10.-On the Characters and Behaviour of the Wandering (Migrating) Cells of the Frog, especially in Relation to Microorganisms: Dr. Kanthack and W. B. Hardy.-On the Colour of the Leaves of Plants and their Autumnal Changes: Dr. Hassall -Stability and Instability of Viscous Liquids: A. B. B-set, F.R S.-Observations on the Earthquake Shocks which occurred in the British Isles and France during the Month of August, 1892: Prof. Hull, F.RS. LINNEAN SOCIETY, at 8.-A Theoretical Origin of Endogens through an Aquatic Habit: Rev. Prof. Henslow. On the Buprestide of Japan and their Coloration: G. Lewis. CHEMICAL SOCIETY, at 8-Fluo-sulphonic Acid T. E. Thorpe, F R S.. and William Kirman.-The Interaction of Iodine and Potassium Chl rate: T. E. Thorpe, F. R.S., and George H. Perry.-The Magnetic Rotation of Sulphuric and Nitric Acids and their Solutions: also of S lutions of Sodium Sulphate and Lithium Nitrate W. H. Perkin, F. R. S. — Note on the Refractive Indices and Magnetic Rotation of Sul huric Acid Solutions: S. U Pickering, F R.S.-Hydrates of Alkylamines: S. U. Pickering, F.R.S- On the Atomic Weight of Boron: W. Ramsay, F.R.S, and Miss Emily Aston-And other papers.

INST TUTION OF ELECTRICAL ENGINEERS, at 8.-The Problems of Commercial Electrolysis: James Swinburne (Discussion.)

LONDON INSTITUTION, at 6. -Lincoln Cathedral (Illustrated): Rev. Canon Edmund Venables.

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THURSDAY, NOVEMBER 24

INSTITUTION OF CIVIL ENGINEERS, at 2.30.-Students' Visits to the C Light and Coke Company's Chief Office, Horseferry Road, Westmine LONDON INSTITUTION, at 6.- The Ruined Cities of Mashonaland (15 trated): J. Theodore Bent.

FRIDAY, NOVEMBER 25. PHYSICAL SOCIETY, at 5. Experiments in Electric and Magnetic F's Constant and Varying: E. C. Rimington and E. Wythe Smith.

BOOKS, PAMPHLETS, and SERIALS RECEIVED

BOOKS.-The Value of Hypnotism in Chronic Alcoholism: Dr. C.. Tuckey (Churchill)-Guide to the Science of Photo Micrography a edition: E. C. Bousfield (Churchill). Pas Centralnerven-ystem: Protopterus Annectens: Dr. R. Burckhart (Berlin, Friedländer), —A 31 Experimental Science: A. Gray (Auck and, Upton) -The Outlin Organic Chemistry: C. J Leaper (Iliffe).-Theorie Mathématique te Lumière H. Poincaré (Paris. G. Carré). A Sequel to the First Six Bot of the Elements of Euclid, 6th edition Dr. J. Casey, edited by P. AE Dowling (Longmans). -The Jurassic Rocks of the Neighbourhood of Cas bridge: T. Roberts (C. J. Clay).-Fossil Plants as Tests of Climate: A Seward (C J. Clay)-The Collected Papers of Sir Wm. Bowman, B F.R S. vol. 1, Researches in Physiological Anatomy, edited by Pr Burdon-Sanderson; vel. 2, Surgical and phthalmological Papers, ess by J W. Hulke (Harrison) —The Fayûm and Lake Moris: Major R Brown (Stanford)-Text-book of the Embryology of Man and Marr Dr. O. Hertwig, translated by Dr. E L Mark (S_nnenschein 1. PAMPHLETS. A Sanitary Crusade through the East and Australia (Gr gow, Boyle) Geologische und Geographische Experimente; ii. Heft, \. kanische und Massen-ruptionen: E. Reyer (Leipzig, Engelmana) --Ta Gods of Greece, and other Translations: Dr. J. F. Whitty (Groc.okFirst Series of Field-path Rambles round Br mley, &c. W. V (Taylor). Un Avance á la Antropologia de España: L. de Hoyos S and T. de Aranzadi (Madrid) -Appunti in Conferma delle Osservazio Tromometriche: P. T. Bertelli (Torino, Giuseppe).

SERIALS. Journal of the Royal Horticultural Society, vol. xiv.: Re of the Conifer Conference (London).- Himmel und Erde, Nowenhe (Berlin, Paetel).-Bulletin de la Société Impériale des Naturaliste & Moscou, 1892, No 2 (Moscou).- Quarterly Journal of Micro-capita Science, November (Churchill). —The Kansas University Quartera October (Lawrence, Kansas).

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Women and Musical Instruments-Henry Balfour An Ancient Glacial Epoch in Australia. By Dr. Alfred Russel Wallace

On the Walking of Arthropoda. By Henry H.

Dixon

On Iron Alloys

Notes.

Our Astronomical Column:

The New Comet.

Comet Brooks (Augus* 28)

The Light of Planets

Stellar Magnitudes in Relation to the Milky Way The Canals of Mars

Geographical Notes

Dr. Nansen's Arctic Expedition

A Remarkable Case of Geometrical Isomerism. A. E. Tutton

Marine Laboratories in the United States. Prof. J. P. Campbell

University and Educational Intelligence Scientific Serials

Societies and Academies

Diary of Societies.

Books, Pamphlets, and Serials Received.

By

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CROSBY LOCKWOOD AND SON'S NEW BOOKS.

NEW WORK ON THE HEAVENS AND THEIR ORIGIN.
NOW READY.

With Six Stellar Photographs and Twelve Lithographic Plates. Demy 8vo, 16s. cloth.

THE VISIBLE UNIVERSE

CHAPTERS ON THE ORIGIN AND CONSTRUCTION OF THE HEAVENS

By J. ELLARD GORE, F.R.A.S., Author of "Star Groups," &c.

SUMMARY OF CONTENTS.-THE NEBULAR HYPOTHESIS-FAYE'S THEORY-STELLAR EVOLUTION-THE FUEL OF THE SUN-THE UMINIFEROUS ETHER-THE CONSTITUTION OF MATTER-CELESTIAL CHEMistry-The METEORITIC HYPOTHESIS-THE MILKY WAY AND STAR DISTRIBUTION-CLUSTERING STARS AND STAR STREAMS-STELLAR DISTANCES AND MOTIONS-GIANT AND MINIATURE SUNS -SOME EARLIER THEORIES OF THE UNIVERSE-SIR WILLIAM HERSCHEL'S THEories-SiderEAL ASTRONOMY FROM HERSCHEL TO STRUVE-STRUVE'S THEORYPROCTOR'S VIEWS-INFINITE SPACE AND A LIMITED UNIVERSE. BY THE SAME AUTHOR. Small 4to, Illustrated by Thirty Maps, 5s. cloth.

STAR GROUPS: A STUDENT'S GUIDE TO THE CONSTELLATIONS.

"A knowledge of the principal constellations visible in our latitudes may be easily acquired from the thirty maps and accompanying text contained in thi vork."-Nature.

THE MICROSCOPE.

Its Construction and Management. By Dr. H. VAN HEURCK. Trans-
lated from the French by WYNNE E. BAXTER, F. R.M.S., &c. With
250 Woodcuts. Imp. 8vo.
[Nearly ready.

SAILMAKING.

(The Art and Science of.) By S. B. SADLER, Sailmaker. With 23 full-sized Plates. Small 4to, 12s. 6d. cloth.

ELECTRIC SHIP-LIGHTING.

A Handbook on the Practical Fitting and Running of Ship's Electrical
Plant. By J. W. Urquhart, C.E. Crown 8vo, 7s. 6d. cloth.

TOOTHED GEARING.

A Practical Handbook for Offices and Workshops. By A FOREMAN
PATTERN MAKER, author of "Pattern Making." With 184 Illustra-

tions. 6s. cloth.

THE MECHANICS OF ARCHITEC

TURE. A Treatise on Applied Mechanics, especially adapted to the use of Architects By E. WYNDHAM TARN, M.A. With 125 Illustrations. Crown 8vo, 75. 6d. cloth.

A POCKET BOOK FOR MINERS.

Comprising Rules, Formulæ, Tables, and Notes. For use in Field an
Office Work. By F. DANVERS POWER, M. E. Fcp. 8vo, 9s. leather.

A HANDY BOOK FOR BREWERS.

Being a Practical Guide to the Art of Brewing and Malting. By H. E
WRIGHT, M.A. 530 pages. Crown 8vo, 12s. 6d. cloth.

LABOUR CONTRACTS.

A Popular Handbook. By DAVID GIBBONS. With Appendix of Statutes by T. F. UTTLEY, Solicitor. Fcap. 8vo, 3s. 6d. cloth.

London: CROSBY LOCKWOOD & SON, 7 Stationers' Hall Court, Ludgate Hill, E.C.

ON THE ORIGIN OF ELEMENTARY SUBSTANCES. AND ON SOME NEW RELATIONS OF THEIR ATOMIC WEIGHTS.

By HENRY WILDE, F.R.S.

In English-French and in English-German. Quarto, Paper Covers, 45.

London: KEGAN PAUL, TRENCH, TRÜBNER & CO., LTD., Charing Cross Road.

Instrument Company, Cambridge. Address all communications "Instrument Company, Cambridge."

Price List of Scientific Instruments, sent post free. Illustrated Descriptive List sent on receipt of is. 6d. The Cambridge Scientific Instrument Company, St. Tibb's Row, Cambridge.

SCIENCE INSTRUMENTS.

n Illustrated, Priced, and Descriptive Catalogue of the Instruents of Science which are used in teaching and demonstrating ery branch of Physical Science, as well as of the Instruments

WANTED TO PURCHASE.

PHILOSOPHICAL MAGAZINE. 1798-1826, or Vols. 39-50, 53-68.
EDWARDS' BOTANICAL REGISTER, Vols. XI., XII., XIII.,
XXII., XXIII., perfect or not.

CURTIS, BOTANI AL MAGAZINE, Vols. 56, 65-73, 75, and following.
QUARTERLY JOURNAL OF MICROSCOPICAL SCIENCE, New
Series, 189 and following

MONTHLY NOTICES ROYAL ASTRONOMICAL SOCIETY, Vols
3. 4. 5. perfect or not.

PHYTOLOGIST, 1854, and INDEX, and New Series Nos. 50 to end.

WILLIAM WESLEY & SON, 28 ESSEX STREET, STRAND, LONDON.

NO BELLADONNA NEEDED.

FOURNET'S REFRACTOMETER.
OCULIST'S APPARATUS (PATENT)

SILVER MEDAL, PARIS, 1889.

See "ENGINEERING," July 18, 1890. Shown before the Royal Institution.

ich are used in Original Research and in the applications of CURATIVE SPECTACLES

Science to Technical Industries and Pursuits.

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This is the very latest improvement, and is
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place every quarter of an hour, and the dots
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continuous line. The price, which includes
small bottle of ink and 55 charts, is £4. 15s.
commend it to all.

Sole Agent in this country-
JAMES J. HICKS,

8, 9, & 10 Hatton Garden,

LONDON, E.C.

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HOLBORN VIADUCT,

WORTHIES.

The following is a list of the Portraits that have appeared in the above Series:

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Proof impressions of these, printed on India paper, may be had from the Publishers, pria 5s. each; or the Set of 27 Portraits in a Handsome Portfolio for £7, carriage paid

THE PORTFOLIO MAY BE HAD SEPARATELY, PRICE 6s.'

Cheques and Money Orders payable to MACMILLAN & CO.,
OFFICE OF "NATURE," 29 BEDFORD STREET, STRAND.

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TIMES:-" The whole subject is handled with that rare patience and thoroughness in investigation, and that keen bu cautious acumen in interpretation which are characteristic of all Mr. Galton's work."

WITH NEW PREFATORY CHAPTER.

Now Ready, Extra Crown 8vo, Cloth, 7s. net.

HEREDITARY GENIUS: An Enquiry into its Laws and Consequences. By

FRANCIS GALTON, F.R.S. New Edition.

BY DR. S. H. KELLOGG.
Now ready, crown 8vo, cloth, 6s.

THE GENESIS AND GROWTH OF RELIGION.

The L. P. Stone

Lectures for 1892 at Princeton Theological Seminary, New Jersey. By the Rev. S. H. KELLOGG, D.D., of Toronto,
Canada.
NEW BOOK BY PROFESSOR RYLE.
Crown 8vo, 35. Net.

THE EARLY NARRATIVES OF GENESIS.

By Prof. H. E. RYLE, B.D. Their object is to discuss the contents of the opening chapters of Genesis in a simple and untechnical style, with special reference to the modifications of view which the frank recognition of the claims of Science and Criticism seems to demand. MRS. MOLESWORTH'S NEW STORY BOOK.

Now Ready, Crown 8vo, 4s. 6d.

THE GIRLS AND I. By Mrs. MOLESWORTH, Author of "Carrots," &c. Illustrated by L. LESLIE BROOKE.

SCOTSMAN:-"The simplicity, naturalness, and good nature of the girls and the chronicler of their actions makes the book always interesting and charming." MORNING POST:-"Čheery and full of life, as Mrs. Molesworth knows how to make her tales, it is likely to be a favourite." GLASGOW HERALD:-" They are very life-like children, and their story is written in a thoroughly boy-like manner. Mrs. Molesworth understands children so thoroughly that all she writes about them seems as real as it is enjoyable. The book is certain to be popular."

NEW BOOK ON MECHANISM.
Imper. 8vo, 30s. Net.

MODERN MECHANISM. Exhibiting the latest progress in Mechanics, Motors,
and the Transmission of Power. Edited by PARK BENJAMIN, LL.B., Ph.D. Editor of "Appleton's Cyclo of Applied
Mechanics" Edition of 1880, Member of the American Society of Mechanical Engineers, of the American Institute of
Electrical Engineers, and of the British Chartered Institute of Patent Agents. Illustrated.
CLASSES.

FOR TECHNICAL AND HANDICRAFT
Now Ready, 4to, Paper Covers, 25.

THE GRAMMAR OF WOODWORK. A Graduated System of Manual Training for Elementary, Secondary, and Technical Schools, designed for the Pupils of the Whitechapel Craft School by WALTER E. DEGERDON, Head Instructor in Woodwork at the Whitechapel Craft School, formerly Woodwork Instructor in the Cambridge University Engineering Workshops. With a Preface by H. LLEWELLYN SMITH.

NEW WORK BY MR. A. H. HIORNS.

Now Ready, Globe 8vo, 5s.

METAL COLOURING AND BRONZING.

BY ARTHUR H. HIORNS, Principal,

Metallurgy and Engineering Department, Birmingham Municipal Technical School.

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