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at first sight seems to underlie the dark mica schist, is inconstant in position (on the assumption of a stratigraphical sequence); that its crystalline condition does not resemble that of the schistseries, but is rather such as is common in a rock of its age; that it contains mica and other minerals of derivative origin, and in places rock-fragments which precisely resemble members of the Piora schist series. (b) The Val Canaria Section: This section, described by Dr. Grubenmann, is discussed at length. It is shown that the idea of a simple trough is not tenable, for identical schists occur above and below the rauchwacké; that there is evidence of great pressure, which, however, acted subsequently to the mineralization of the schists; and that in one place the rauchewacké is full of fragments of the very schists which are supposed to overlie it. (c) Nufenen Pass, &c. Other cases, further to the west, are described, where confirmatory evidence is obtained as to great difference in age between the rauchewacké and the schists, and the antiquity of the latter. The apparent interstratification is explained by thrust-faulting. (4) The Jurassic Rocks, containing Fossils and Minerals. The author describes the section on the Alp Vitgira, Scopi, and the Nufenen Pass. Here indubitable Belemnites and fragments of Crinoids occur in a dark, schistose, somewhat micaceous rock, which is often very full of "knots" and "prisms" of rather ill-defined external form, something like rounded garnets and ill-developed staurolites. These rocks at the Alp Vitgira appear to overlie, and in the field can be distinguished from the black garnet schists. In one place the rock resembles a compressed breccia, and among the constituent fragments is a rock very like a crushed variety of the black-garnet mica-schist. These Jurassic "schists" are totally different from the last-named schists, to which they often present considerable superficial resemblance; for instance, their matrix is highly calcareous, the other rock mainly consisting of silicates. Some of the associated mica may be authigenous, but the author believes much of it and other small constituents to be derivative. There is, however, a mineral resembling a mica, exhibiting twinning with (?) simultaneous extinction, which is authigenous. The knots are merely matrix clotted together by some undefinable silicate, and under the microscope have no resemblance to the "black garnets." The prisms are much the same, but slightly better defined; they present no resemblance to the staurolites, but may be couseranite, or a mineral allied to lipyre. Hence, though there is rather more alteration in these rocks than is usual with members of the Mesozoic series, and an interesting group of minerals is produced, these so-called schists liffer about as widely as possible from the crystalline schists of the Alps, and do not affect the arguments in favour of the antiquity of the latter. In short, they may be compared to rather poor forgeries of genuine antiques. Incidentally the author's observations indicate (as he has already noticed) that a cleavagefoliation had been produced in some of the Alpine schists anterior to Triassic times. After the reading of this paper, Dr. Geikie stated that he had sent to Prof. Heim an abstract of the paper read by Prof. Bonney to the British Association at Newcastle, and Dr. Heim had favoured him with a résumé of his views on the subject of the present discussion. Having read a translation of this résumé, Dr. Geikie complimented the author on his courage in returning to this difficult ground, but, notwithstanding the arguments so skilfully brought forward that evening, he was not convinced of an error on the part of the Swiss geologists. Even the author's own sections gave some countenance to their views, since the dark garnetiferous schists might quite well be part of the same series as the Belemnite-schists. In metamorphic regions there must be some line, on one side of which fossils are recognizable, on the other not so. In the Alps, as Heim and his associates contend, the Belemnite-schists, which have become markedly crystalline, may be less altered portions of masses from which all trace of fossils has been generally obliterated. Remarks were also made by Mr. Eccles, Mr. Teall, Dr. Irving, Prof. Hughes, the Rev. E. Hill, and Prof. Bonney.

Entomological Society, January 15.-Fifty-seventh Annual Meeting. The Right Hon. Lord Walsingham, F. R.S., President, in the chair.-An abstract of the Treasurer's accounts, showing that the finances of the Society were in a thoroughly satisfactory condition, was read by Dr. Sharp, one of the Auditors, and the Report of the Council was read by Mr. H. Goss. It appeared therefrom that the Society had lost during the year several Fellows by death and had elected 24 new Fellows; that the volume of Transactions for the year extended to nearly 600 pages, and comprised 23 memoirs, contributed by

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20 authors and illustrated by 17 plates; and that the sale of t`Society's Transactions and other publications is largely a increase. It was then announced that the following gentler had been elected as Officers and Council for 1890:-Presi The Right Hon. Lord Walsingham, F.R.S.; Treasurer, V Edward Saunders; Secretaries, Mr. Herbert Goss and Rev. Canon Fowler; Librarian, Mr. Ferdinand Grut; and other Members of Council, Mr. J. W. Dunning, Captam H Elwes, Mr. F. DuCane-Godman, F.R.S., Dr. P. B. Ma--_ Prof. R. Meldola, F.R. S., Mr. R. South, Mr. Henry T. Stam F. R.S., and Mr. Roland Trimen, F.K. S. Lord Walsing nominated Mr. J. W. Dunning, Captain Elwes and Mr. P DuCane-Godman, Vice-Presidents for the Session 180and he then delivered an address. After remarking on attractive beauty of some of the larger diurnal Lepidoptera, the brilliant metallic colouring of certain species of Coleop!-the influence that such magnificent examples of the weath design in Nature might have upon artistic taste, and the ne sequent refinement and increased enjoyment of life, Lord Wal ham referred, in illustration of the practical usefulnes entomological studies, to the successful importation into Califor of the Australian parasites infesting the scale insect purchasi), which had proved so noxious to the orange plantar Through the efforts of Prof. Ritey, upwards of 10,000 parze had been distributed and had since spread very widely, so [ in many localities the orange and other trees hitherto the infested with this noxious insect had been practically cleare it by their aid. He also referred to the successful fertilizatie/ red clover in New Zealand by the importation of imprega queens of the common humble-bee, and to the uses to which silk produced by various exotic species of Bombycidæ had n been successfully applied. Reference was then made to investigation instituted by Mr. Francis Galton, F.R. S., and tyr experiments of Mr. F. Merrifield, with the view of determ the percentage of hereditary transmission to successive offe by different generations of successors, and to the val auxiliary such experiments and the researches of Prof. Wersm Mr. Poulton, F. R. S., and others might prove to the study d laws of heredity, protective resemblance, and natural select It was then observed that even if the study of entomology claim to have conferred no greater benefits upon the han race than to have afforded to many members of our a population an inducement to improve their minds and recte.their bodies, it would have contributed in no small degree to sum of human health, happiness, and morality; in connect = with these remarks he quoted the words of the Abbé Umharg the obituary notice of Henri de Peyerimhoff, "J'ai connu d'un jeune homme qui s'est passionne pour une brande l'histoire naturelle, et je n'en ai vu aucun s'écarter du chemin la vertu et de l'honneur." Attention was then drawn to he enormous numbers of species of Insecta as compared with 1. numbers of species of other orders of the animal kingdom, an approximate estimate was made of the extent of the field entomology, and of its relation to other branches of biolog study. In connection with the subject of the principal works entomology continued or completed during the year, mention was made of the "Biologia Centrali Americana" Messrs. Godman and Salvin, and the "Revisio Insecto Familiæ Mantidarum," by Prof. Westwood. In conclu Lord Walsingham referred to the losses by death during past year of several Fellows of the Society and other en logists, mention being made of Mr. F. Bond, Dr. Signo.. Mons. Puls, Colonel C. J. Cox, Pastor Holmgren, Dr. Fe Low, Dr. Karl Venus, and the Rev. J. G. Wood, Votes of th.. k having been passed to the President, Secretaries, and Librar Lord Walsingham, Mr. H. Goss, Canon Fowler, and Mr. replied.

Linnean Society, January 16.—Mr. J. G. Baker, F.R. Vice-President, in the chair.-Mr. Clement Reid exhibited made some remarks upon a collection of fruit of Trupa mat from the Cromer Forest bed at Mundesley.-Mr. J. Glass exhibited and described a collection of cryptogamic plants fr New Guinea, upon which Mr. A. W. Bennett and Ca Elwes made some critical remarks. In the absence of -author, Mr. A. Barclay, a paper was read by Mr. B. D. son on the life-history of a remarkable Uredine on 7***** grandiflora. A discussion ensued in which Mr. A Bennett and Prof. Marshall Ward took part.-This was followe by a paper from Mr. Edward E. Prince, on certain profectat provisions in some larval British Teleosteans.

Royal Microscopical Society, January 8.-Rev. Dr. allinger, F.R.S., Vice-President, in the chair.-Mr. T. F. mith exhibited to the meeting, by means of the oxyhydrogen stem, a series of photomicrographs of various diatoms taken in Zeiss's apochromatic objectives and projection eye-pieces, ing powers of 1000 to 7500 diameters. At the conclusion of e exhibition Mr. Smith presented the series of slides-52 number-to the Society for future use and reference.-Mr. . C. White exhibited a specimen of a parasite found in the roaches which infest sugar-ships; also a slide containing all in large numbers from a urinary deposit.—A paper by 7. R. L. Maddox, on a small glass rod illuminator, was read.wing to the lateness of the hour, the reading of papers by Mr. chael and Dr. Czapski was postponed until the March

Meeting.

Chemical Society, January 16.-Dr. W. J. Russell, F. R. S., the chair.-The following papers were read :-A new method Jestimating the oxygen dissolved in water, by Dr. J. C. Thresh. e process is based on the fact that whereas, in the absence of gen, nitrous acid and hydrogen iodide interact, forming har, water, and nitric oxide, in the presence of oxygen the inc oxide becomes re-oxidized, and, serving as a carrier of the vygen, brings about an additional separation of iodine, equivaof in amount to the oxygen present; hence, deducting the ount of indine liberated by the nitrous acid and by the oxygen olved in the solutions used from the total amount, the differat will be that corresponding to the oxygen dissolved in the er examined. The apparatus required is a very simple one, be analytical operations are conducted in an atmosphere of coal and the results in the case of freshly distilled water agree ely with those recently published by Sir H. E. Roscoe and Lunt (Chem. Soc. Trans., 1889, 552).-Note on a milk of mal quality, by Mr. F. J. Lloyd. The author gave the taks of an examination of the milk of two cross-bred shortta, and called attention to the abnormally low proportion of od constituents other than fat.-The sulphates of antimony, by &R. H. Adie.

Zoological Society, January 14.-Prof. A. Newton, S., Vice-President, in the chair.-The Secretary read a pot on the additions that had been made to the Society's agene during the month of December 1889.-Mr. Sclater bibited and made remarks on a specimen of a very singular from North-East Asia, apparently referable to the genus na, sent to him for determination by Dr. Lütken, of enhagen. After a careful examination Mr. Sclater was inred to think that it was probably a hybrid between Tadorna ca and Querquedula falcata,-Mr. Sclater exhibited and de remarks on a set of small birds' bones obtained from eaeath some deposits of nitrate in Southern Peru, transmitted the Society by Prof. W. Nation. -Mr. David Wilson-Barker raibited and made remarks on some specimens of Teredos taken submarine telegraphic cables off the Brazilian coast.-Prof. 1. Jettrey Bell exhibited and made remarks on some living mens of Bipalium, transmitted to the Society by the Rev. H. R. Fisk, of Capetown.-A communication was read from R Lydekker, containing an account of a new species of cinct outer from the Lower Pliocene of Eppelsheim. The ahor described part of the lower jaw, which he had previously Herred to Lutra dubia, from the deposits indicated. Having, wever, now seen a cast of the type of the latter, he found that De present specimen indicated a distinct species, for which the Le L. kasie was proposed.-A communication was read Prof. Bertram C. A. Windle and Mr. John Humphreys, me cranial and dental characters of the domestic dog. The aber was based on the results of the measurements of a large mber of dogs' skulls of various breeds. Its object was to certain whether cranial and dental characteristics afforded oficient information to permit of a scientific classification of the iends, or would throw any light upon their origin. The con10m so far arrived at was that interbreeding had been so extensive and complicated as to make it impossible to distinguish the various forms scientifically from the characters examined. several points with regard to the shape of head and palate and Le occasional occurrence of an extra molar were also touched -Pon-Mr. G. A. Boulenger read the fourth of his series of contributions to the herpetology of the Solomon Islands.

The

rent memoir gave an account of the last collection brought seme by Mr. C. M. Woodford. Besides known species, this ollection contained examples of a new snake, proposed to be

called Hoplocephalus elapoides.—A second paper by Mr. Boulenger contained a list of the reptiles, batrachians, and freshwater fishes collected by Prof. Moesch and Mr. Iversen in the districts of Delhi and Langkat, in North-Eastern Sumatra.-Dr. Günther, F.R.S., read a paper entitled "A Contribution to our Knowledge of British Pleuronectidæ." The author described the true Arnoglossus grohmanni, a Mediterranean scald-fish, recently discovered by the Rev. W. S. Green on the Irish coast, and quite distinct from Arnoglossus lophotes. Dr. Günther also stated that the Mediterranean lemon-sole (Solca lascaris) was specifically identical with the British species (Solea aurantiaca), but was distinct from that of the Canary Islands and Madeira (Solea scriba); and gave it as his opinion that the Mediterranean Solea lutea and British Solea minuta cannot be separated by any

constant character.

EDINBURGH.

Royal Society, January 6.-Lord Maclaren, Vice-President, in the chair.-Bailie Russell read an obituary notice of the late Sir James Falshaw, Bart.-Prof. Tait read a paper on the effect of friction on vortex-motion.-Dr. A. Bruce described a connection (hitherto undescribed) of the inferior olivary body of the medulla oblongata, which has a function in the maintenance cf equilibrium of the body.-Dr. W. H. Perkin read a paper on the internal condensation of some diketones.-A photograph of a group of sun-spots and of the surface of the sun was presented by Mr. James Naismith. The photograph was from a drawing made in 1864.

PARIS.

Academy of Sciences, January 27.-M. Hermite in the chair. On clasmatocytes, by M. L. Ranvier. The author gives this name (from κλáσμа, fragment, and Kúтos, cell) to certain elements which are easily detected under the microscope in the thin connective membranes of the vertebrates when they are prepared by a process here described. They are not migratory cells, but have their origin in the leucocytes, or lymphatic cells, though it is not to be supposed that all leucocytes develop into clasmatocytes. On the theorem of Euler in the theory of polyhedrons, by M. de Jonquières. The paper deals with Lhuilier's objection, accepted by Gergonne, against the generalization of Euler's formula, which is shown to be applicable to all polyhedrons, whether convex or not. It is further placed beyond doubt that Euler not only enounced, but gave a full demonstration of the formula in question.-On the roots of an algebraic equation, by Prof. A. Cayley. Assuming (u) to be a rational and integral function, with real or imaginary coefficients, of the

[(u)

# order; and supposing that the equation ('() = o, of the order

n I, has n 1 roots, then it is shown that the equation (u) = o will have roots. The demonstration rests on the same principles as those of Gauss and Cauchy.-Researches on the cultivation of the potato, by M. Aimé Girard. The author communicates the results of his experiments, continued for three years at the Ferme de la Faisanderie, Joinville-le-Pont, with the variety of the potato known as Richter's Imperator, which is shown to yield a far larger crop of starch-bearing tubers than any other variety cultivated in France. The paper was supplemented by some remarks by M. P. P. Dehérain, who stated that his own experiments fully confirmed those of M. Girard. There could be no doubt as to the great superiority of Richter's Imperator, especially as a starch-producing tuber.-Remarks on the Annuaire du Bureau des Longitudes for 1890, by M. Faye. In presenting a copy of this valuable annual for 1890, M. Faye remarked that the astronomic section of the work became more

important every year. The present volume contains a table of the planetary phenomena, the most accurate available data for the variable stars, a catalogue of the chief stars whose magnitudes correspond to Pickering's photometric scale, papers on the use of the aneroid barometer, on the elasticity of solids and the neutral temperature of thermo-electric couples, together with the magnetic elements for France and its seaports on January 1, 1890, and at various Mediterranean stations for 1887.-On the simply rational transformations of algebraic surfaces, by M. Paul Painlevé. In this paper the author extends to the transformations in question M. Picard's method relative to the birational transformations of algebraic surfaces.--,On the substitution of the salts in mixed solutions, by M. A. Etard. In his previous researches the

author determined the lines of complete solubility for a mixture of potassium and sodium chlorides, varying the quantity of the metals saturated by the same metalloid as a function of the temperature. He studies the reverse case here, determining the results when in a solution of the same metal the metalloids are varied. On the different states of iodine in solution, by MM. Henri Gautier and Georges Charpy. Iodine solutions are usually divided into two classes-brown (alcohol, ether, &c.) and violet (sulphur of carbon, chloroform, benzine, &c.). The molecular weights have been determined by Raoult's method, and results were obtained varying from 330 to 489, according to the solvent; Loeb's results are thus confirmed and amplified. -Calorimetric study of the phosphites and pyro-phosphite of soda, by M. L. Amat. These researches fully confirm the author's previous conclusion that the acid phosphite of soda, PO,H.NaH, may, by the simple process of drying, lose water and become transformed into pyrophosphite of soda, a substance differing in many of its properties from the acid phosphite.-A study of the pneumococcus occurring in the fibrine pneumonia consecutive to la grippe (influenza), by MM. G. Sée and F. Bordas. From these clinical researches, made on a large number of patients in the Hôtel-Dieu, the authors conclude that pneumonia is not only a local affection caused by infection, but that it is itself infecting in the sense that it may invade other organs.-Papers were read by M. Chr. Bohr, on pulmonary respiration; by M. Abel Dutartre, on the poison of the land salamander; by M. Ch. Musset, on "selenotropism" (influence of moonlight on plants); by M. A. de Schulten, on the artificial reproduction of malachite all but identical in density, hardness, and crystallization with the natural stone; by M. A. de Grossouvre, on the presence of Alpine fossils in the Callovian formation of the west of France; and by M. Ch. V. Zenger, on the magnetic storms and aurora boreales of the years 1842-57.

DIARY OF SOCIETIES. LONDON.

THURSDAY, FEBRUARY 6.

ROYAL SOCIETY, at 4.30.-A New Theory of Colour-blindness and Colourperception: Dr. Edridge Green. -Memoir on the Symmetrical Functions of the Roots of Systems of Equations: Percy A. MacMahon, Major R.A. LINNEAN SOCIETY, at 8.-On the Stamens and Setæ of Scirpeæ: C. B. Clarke, F.R.S.-On the Flora of Patagonia: John Ball, F.R.S. CHEMICAL SOCIETY, at 8.-Ballot for the Election of Fellows.-The Oxides of Nitrogen: Prof. Ramsay, F. R.S.-Studies on the Constitution of TriDerivatives of Naphthalene: Dr. Armstrong and W. P. Wynne-On the Action of Chromium Oxychloride on Nitrobenzole: G. G. Henderson and J. Morrow Campbell.

ROYAL INSTITUTION, at 3.-Sculpture in Relation to the Age: Edwin Roscoe Mullins.

FRIDAY, FEBRUARY 7.

PHYSICAL SOCIETY, at 5.-Annual General Meeting.-On Galvanometers:
Prof. W. E. Ayrton, F.R.S., T. Mather, and W. E. Sumpner.-On a
Carbon Deposit in a Blake Telephone Transmitter: F. B. Hawes,
GEOLOGISTS' ASSOCIATION, at 7.30.-Annual General Meeting-Notes on
the Nature of the Geological Record: The President.
SOCIETY OF ARTS, at 5.-1
Dr. Schlich.
INSTITUTION OF CIVIL ENGINEERS, at 7.30.-Reclamation of Land on the
River Tees: Colin P. Fowler.

-The Utility of Forests and the Study of Forestry :

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TUESDAY, FEBRUARY 11.

ANTHROPOLOGICAL INSTITUTE, at 8.30.-Exhibition of some Skulls, dredged by G. F. Lawrence from the Thames, in the Neighbourhood of Kew: Dr. Garson-Characteristic Survivals of the Celts in Hampshire : T. W. Shore.

SOCIETY OF ARTS, at 8.-Cast Iron and its Treatment for Artistic Purposes: W. R. Lethaby.

INSTITUTION OF CIVIL ENGINEERS, at 8.-Bars at the Mouths of Tidal Estuaries: W. H. Wheeler.

ROYAL INSTITUTION, at 3.-The Post-Darwinian Period: Prof. G. J. Romanes. F.R.S.

UNIVERSITY COLLEGE BIOLOGICAL SOCIETY, at 5.15.-Some Aberrant Coleoptera: S. V. Tebbs.

WEDNESDAY, FEBRUARY 12. ROYAL MICROSCOPICAL SOCIETY, at 8.-Annual Meeting.-President's Address.

SOCIETY OF ARTS, at 8.-Modern Improvements in Facilities for Railway Travelling: George Findlay.

THURSDAY, FEBRUARY 1}

ROYAL SOCIETY, at 4.30.
MATHEMATICAL SOCIETY, at 8.-Concerning Semi-invariants: S. Ke-
F.R.S.-Ether-Squirts: Prof. K. Pearson.

INSTITUTION OF ELECTRICAL ENGINEERS, at 8.

ROVAL INSTITUTION, at 3.-The Three Stages of Shakspeare's Art, P
Canon Ainger.
FRIDAY, FEBRUARY 14.

ROVAL ASTROnomical SocieTV, at 3 —Anniversary Meeting
ROVAL INSTITUTION, at 9.-Problems in the Physics of an Electra. La
Prof. J. A. Fleming.

SATURDAY, FEBRUARY 15 ROYAL INSTITUTION, at 3.-Electricity and Magnetism: Right Hen an Rayleigh, F.R.S.

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BOOKS, PAMPHLETS, and SERIALS RECEIVED Medical Electricity and Massage: H. N. Lawrence (Gill)-A DLunar Surfacing by Glaciation: S. E. Peal (Thacker).-Emiesteng a chemische Krystallographie: Dr. A. Fuck (Leipzig. Engelmana mente der Paläontologie, 2, Hälfte: Dr. G. Steinmann and Dr L D (Leipzig, Engelmann).-L'Evolution du Système Nerveux (Paris, J. B. Baillière).-A Theory of Gravitation: T. Wakelin (P-x-The Psychology of Attention: T. Ribot (Chicago, Open Court Pur Company).-English Intercourse with Siam in the Seventeenth Cr Dr. J. Anderson (K. Paul).-Contributions to the Fauna of Merge a Archipelago, 2 vols. (Taylor and Francis).-Keport of the Commissone Education for the Year 1887-88 (Washington).-The Library Reference. of the World: J. Bartholomew (Macmillan)-Science and Scientists V. J. Gerard (London).-Le Climat de la Belgique en 1889: A Latt (Bruxelles).-Tylar's Practical Hints and Photographic Calendar (Tylar, Birmingham).-Results of Astronomical observations made a Melbourne Observatory in the Years 1881-84 (Melbourne).- Babbage culating Engines (Spon).-Practical Hints for Electrical Students Kennelly and Wilkinson (Electrician Office) —Lehrbuch der Marz. Dr. W. J. Van Bebber (Stuttgart, Enke).-Is the Copernica y 20 Astronomy True?: W. S. Cassedy (Kittanning. Pɔ )—New Zenanam Emigrant, Invalid, and Tourist: J. M. Moore (S. Low) -Fazu er kohle und der Kalksteine der Permformation Böhmens, Band a Het Ant. Fritsch (Prag).-The Extermination of the American Bee. / Hornaday (Washington).-Iowa Weather Report, 1878-79-86-80 Jan (Des Moines, Iowa).-U.S. Commission of Fish and Fisheries: Par 1 Report of the Commissioner for 1880 (Washington)-Report safe Fungus Pests, No. 1: H. Tryon (Brisbane, Beal)-La Photogr Lumière du Magnésium: Dr. J. M. Eder (Paris, Gauriuer-Vilan upon a Proposed Photographic Survey of Warwickshire: W. Ja (Birmingham).-Chinese Games with Dice: S. Culia (Pilat pehmek cient Symbolism among the Chinese: Dr. J. Edkins (Trūbaer)—}= the Royal Statistical Society, December (Stanford) -Charts shor-, Normal Monthly Rainfall in the United States (Washington),

CONTENTS.

Tavernier's Travels in India. By H. F. B. Our Book Shelf:

Ball: "Star Land"...

"The Magic Lantern: its Construction and Use". Letters to the Editor:

Acquired Characters and Congenital Variation.-W.
T. Thiselton Dyer, C.M.G., F.R.S.; F. V.
Dickins

Eight Rainbows seen at the Same Time. (Illustrated)
-Sir William Thomson, F.R.S.; Dr. Percival
Frost, F. R.S..

Thought and Breathing.-Prof. F. Max Müller;
Rev. W. Clement Ley

Chiff-Chaff singing in September.-Rev, W. Cle-
ment Ley.

Foreign Substances attached to Crabs.-Dr. R. v.
Lendenfeld

Foot-Pounds.-Prof. A. G. Greenhill, F. R.S.; V. Prof. Weismann's Theory of Heredity. By Prof. A.

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Smokeless Explosives. I. By Sir Frederick Abel,
F.R.S..

Solar Halos and Parhelia. (Illustrated.)
The Institution of Mechanical Engineers
University and Educational Intelligence .
Scientific Serials

Societies and Academies
Diary of Societies.

Books, Pamphlets, and Serials Received

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MONOGRAPH OF THE BRITISH CICADE OR FETTIGIIDE
(FROGHOPPERS AND GRASSFLIES).

By GEORGE BOWDLER BUCKTON, F.R.S.,

Corr. Memb. Acad. Nat. His. of Philadelphia, Memb. de la Soc. Ent. de France.

Illustrated by more than 400 Coloured Drawings. In Eight Parts. Demy 8vo. Part I. 8s.

No coloured monograph of the British Cicada exists, and it is even believed that no adequately illustrated monograph exists of Furopean species. Partly to meet this want, it is proposed to publish eight quarterly parts, each containing on an average ten litho-chromo plates and letterpress, illustrating the forms, metamorphoses, general anatomy, and the chief details connected with the life-history of this family of insects. The work will contain also short diagnoses of all the British species, about 230 in number, most of which have come under the author's notice, each species being illustrated by one or more coloured drawings. Some account will be given of the curious myths and tales told by ancient Greek and Latin poets, and descriptions will be appended relating to the curious sound-organs possessed by some species, and other subjects connected with the economy of this interesting but difficult group of Rhynchotous insects. Mr. Buckton's name is well-known to entomologists, and this book represents the labour and observation of many years.

MACMILLAN AND CO., LONDON.

TEXT-BOOK

OF

PHYSIOLOGY.

By Prof. JOHN G. McKENDRICK, M.D., F.R.S.

VOL. 1.-GENERAL PHYSIOLOGY. Price 16s.

VOL. II.-SPECIAL PHYSIOLOGY. Price 245.
Over 1000 Woodcuts and Three Plates.
The Volumes may be purchased separately, and each forms a Complete Work.
JAMES MACLEHOSE & SONS, Glasgow,

By LIONEL S. BEALE, M.B., F.R.S.,
Professor of Medicine in King's College, London.

HOW TO WORK WITH THE MICROSCOPE.
Plates. 218. (Harrison and Sons.)

100

OUR MORALITY AND THE MORAL QUESTION. 2s. 6d.
800 FIGURES OF URINARY DEPOSITS. 5s.
URINARY AND RENAL DERANGEMENTS AND CAL-
CULOUS DISORDERS, Diagnosis and Treatment. Now Ready, 5s.
SLIGHT AILMENTS. Pp. 275. 55.

THE MICROSCOPE IN MEDICINE. 86 Plates. 21s.
BIOPLASM: Introduction to Medicine and Physiology. 6s. 6d.
PROTOPLASM. (New Edition preparing.)

ON LIFE AND ON VITAL ACTION. 5s.

THE MYSTERY OF LIFE. 3s. 6d.

LIFE THEORIES AND RELIGIOUS THOUGHT. 5s. 6d.
THE "MACHINERY" OF LIFE. 25.

DISEASE GERMS. (Soiled Copies only.) 8s. 6d.

London: J. & A. CHURCHILL.

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66

MACMILLAN & CO., London.

A great want is supplied in 'Science for All.""-Graphic.
Now Ready, Part 1, Price 7d., of the New Serial Issue of

SCIENCE FOR ALL. With about 1500

ILLUSTRATIONS and Diagrams.

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Ampère Meters.

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Francs. 60

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J. CARPENTIER,

PARIS-20 Rue Delambre-PARIS.

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F. H. BUTLER, M.A. Oxon., A.R.S. Mines, &c.

NATURAL HISTORY AGENCY,

148 BROMPTON ROAD, LONDON, S.W.,
Near the British Natural History Museum.

English and Foreign Rocks, Minerals, Fossils, Shells, and other
Objects of Natural History."

A large series of interesting rocks now in stock from remote localities in the Highlands, including "Haggis" rock, Canisp Porphyry, and Archæan Pikrite and Peridotite; also numerous micro-sections of little-known rocks from Cornwall and elsewhere, well crystallized Pajsbergite, Brandtite, Valujevite, and Braunite; exceptionally fine polished Bloodstone, Cinnabar from the Avala Mine. Servia; Lancashire ferruginous calcite (the largest as yet raised), and Brazilian Rock-crystals. Among the recent acquisitions in fossils are specimens from the Caradoc of the Onny River, and rare Devonian corals.

J. T. CROCKETT,

Maker of every description of Entomological Cabinets and Apparatus, Store- and Book-boxes, fitted with Camphor-cells; Setting Boards, Oval or Flat, &c. Cabinets of every description kept in stock. SPECIAL INSECT CABINETS, with Drawers fitted with Glass Tops and Bottoms to show upper and under side without removing insect. Store-boxes specially made for Continental Setting, highly recommended for Beetles. All best work. Lowest possible terms for cash. Prices on Application. Estimates supplied. Trade supplied. Established since 1847.

Show Rooms-A Prince's Street, Cavendish Square, W. (7 doors from Oxford Circus). Factories-34 Ridinghouse Street, and Ogle Street, W.

MINERALOGY AND GEOLOGY.

SPECIAL AND TYPICAL COLLECTIONS FOR STUDENTS LECTURERS, AND MUSEUMS.

EVERY REQUISITE FOR PRACTICAL WORK, CABINETS, CASES, APPARATUS OF ALL KINDS.

The Largest Stock in England of Rocks, Rock-Sections, Minerals, Fossils.

New Catalogues and Lists now ready, Free, of

JAMES R. GREGORY,

88 CHARLOTTE STREET, FITZROY SQUARE, LONDON.

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BEST BLACK INK KNOWN.

DRAPER'S INK (DICHROIC).

DIFFERING FROM ANYTHING ELSE EVER PRODUCED. Writing becomes a pleasure when this Ink is used. It has been adopted in the principal Banks, Public Offices, and Railway Companies through Ireland.

It writes almost instantly full black. | Flcws easily from the Pen.
Does not corrode Steel Pens.
Blotting-paper may be applied at the
moment of writing.

Is cleanly to use, and not liable to Blot.
Can be obtained in London, through Messrs. BARCLAY & SONS, Farrug
don Street; W. EDWARDS, Old Change; F. NEWBERY & SONS, Newpat
Street; and to be had of all Stationers.

BEWLEY & DRAPER Limited), Dublin

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