Slike strani
PDF
ePub

important part in the chemistry of their metabolism.-Dr. Rosenberg demonstrated a new reaction of uric acid. When urine is made faintly alkaline, it yields a dark blue colouration on the addition of phosphotungstic acid, which he had satisfied himself was due to the presence of uric acid alone among the other constituents of the excretion.-Dr. Goldscheider gave an account of some experiments which he had made some five years ago, to show that the principle of "specific nerve energy " holds good for the sense of taste. By isolated stimulation of separate taste-papillæ he succeeded in showing that there exist, in all, four kinds or qualities of taste-sour, sweet, bitter, and salt; and that specific end-organs exist for each kind of taste. By electrical stimulation there arises at the anode not only the sensation of sour, but also of bitter and sweet; at the kathode purely sensory impulses are aroused in addition to the gustatory, and to the fusion of these two is due the " alkaline" taste of which some authors speak. It appeared from his researches that the hard palate contained end-organs chiefly for the perception of sweet tastes.-Dr. I. Munk spoke on muscular work and nitrogenous metabolism. He criticized the recent work of Argutinsky, according to which the work done in climbing a mountain, and the heat produced, are the outcome of a breaking down of nitrogenous material. Having recalculated Argutinsky's results, he came to the conclusion that (1) his body was not in nitrogenous equilibrium even during rest; (2) the amount of carbohydrate which he took was insufficient to account for the heat-production during rest. As is well known, both these factors lead to an increased nitrogenous metabolism when extra work is done, the energy required for the excess of work being obtained from the breaking down of proteids; hence no conclusions as to what normally takes place can be drawn from Argutinsky's experiments. He further pointed out that Oppenheim's experiments have shown that dyspnoea leads to increased nitrogenous metabolism, and that hence dyspnoea may very probably have played some part during the exertion of excessive climbing. While not doubting the accuracy of the experiments, he did not feel that the conclusions which Argutinsky had drawn from them were justifiable.

GÖTTINGEN.

Royal Society of Sciences, Oct. 15, 1889.-On the granular pigments occurring in man, by Dr. F. Maas. Two chemically distinct groups of pigments occur: (1) melanin, (2) the granular colouring matters here referred to. The latter are found at all periods of life, but increase in quantity and in the size of the granules with age. They are normal products, not morbid. They are not only transformed but produced by the corpusclecarrying cells. They are not wholly derived from the blood: the pigment found in the heart is derived from a fatty body. The several pigments can be distinguished by their reactions with hydrochloric and acetic acids, and with caustic potash.-On the analogue of Kummer's surface for p = 3, by W. Wirtinger. The author investigates the continuum obtained by taking, as the eight homogeneous point-co-ordinates of a 7-dimension space, eight linearly independent squares of theta-functions of three variables. It appears that this possesses collineations analogous to the system for Kummer's surface, as also the corresponding system of reciprocal transformations into itself.

October 23, 1889.-Determination of the elastic constants of Iceland spar, by W. Voigt. The author uses the refraction observations of G. Baumgarten, and gives elaborate tables of his own measurements.] He discusses the property of spar by which the crystal can be forced by shearing into its twin form, and gives diagrams illustrating the changes in the traction and torsion coefficients.-Determination of the elastic constants of certain dense minerals, by W. Voigt and P. Drude. The minerals are dense fluor spar, Solenhofen stone, and dense barytes.

December 3, 1889.-On thermo-electric currents in crystals, by Th. Liebisch. The author confirms some of Backstrom's results, and finds that, in a rectangular parallelepiped of homogeneous conducting crystal of the triclinic system, embedded in homogeneous isotropic "normal" metal, "the thermo-electric force in the direction of the steepest temperature gradient is represented by the squared reciprocal of the parallel radius vector of a certain ellipsoid E."-On contrast-phenomena resulting from suspended attention, by Dr. F. Schumann. Psycho-physical experiments on the estimation of short periods of time, &c.

December 25, 1889.-On the fertilization of the ova of Agelastica alni, L., by Dr. H. Henking. In this insect it is observed that

in ova taken from the oviducts a number of spermatozoa pene trate deeply among the yolk-masses as far as the level of the female pronucleus. Peculiar karyokinetic appearances ar described. Contribution to the theory of the even Abelian sigma-function of three arguments, by Ernst Pascal. This is a continuation of the author's previous work on the odd sigmafunction. The terms of the developments are combinants of a net of quaternary quadratic forms.-On a hyperelliptic multiplication equation, by H. Burkhardt. This equation for hyperelliptic functions (2) is the generalisation of Jacobi's equation for elliptic functions.

AMSTERDAM.

Royal Academy of Sciences, March 29.-Prof. van der Waals, Vice-President, in the chair.-M. H. A. Lorentz dealt with the molecular theory of diluted solutions. He showed how the known formula for the vapour-pressure of such solutions may be derived from considerations on molecular motion and attraction, and how a similar theory applies to a conceivable mechanism of osmotic pressure.-M. Baehr gave some observations on the points of inflexion, unless the ellipsoid be not a central one.-M. herpolhodie of Poinsot, and explained that this cannot have any Pekelharing spoke of "the destruction of anthrax spores by

rabbits' blood."

STOCKHOLM.

Royal Academy of Sciences, April 9.-On the researches in zoology made at the Zoological Station of the Academy during 1889, by Prof. S. Lovén.-On the possibility of the triangulation of Spitzbergen, by Prof. Rosén.—An analysis of the liquid inclosures in topaz, or the so-called Brewsterlinite, by Otto Nordenskiöld.-On the use of invariants and seminvariants for the solution of common algebraic equations of the four lowest degrees, by Dr. A. Bergen.-On the structure of the fruit-wall in the Labiatæ, by Miss A. Olbers.-Some researches on accidental double refraction of gelatinous substances, by Dr. G. Bjerken. On the action of iodohydric acid on 1-5 nitronaphthalin-sulphon-acid-amid, by A. Ekbom.

[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

DIARY OF SOCIETIES.

LONDON.

THURSDAY, APRIL 24.

ROYAL SOCIETY, at 4.30.-On a Pneumatic Analogue of the Wheatstone Bridge: W. N. Shaw.-On the Effect of Tension upon Magnetic Changes of Length in Wires of Iron, Nickel, and Cobalt : Shelford Bidwell, F.R.S. On the Heat of the Moon and Stars: C. V Boys, F.R.S.-Magnetic Properties of Alloys of Nickel and Iron: Dr. Hopkinson, F.R.S. IWTITUTION OF ELECTRICAL ENGINEERS, at 8.-On a Lightning Guard for Telegraph Purposes, and on the Protection of Cables from Lightning: Dr. Oliver Lodge, F.R.S.

ROYAL INSTITUTION. at 3-The Heat of the Moon and Stars (The Tyndall Lectures): Prof. C. V. Boys, F.R.S.

FRIDAY, APRIL 25.

[blocks in formation]

History: Hon. George C. Brodrick.

WEDNESDAY, APRIL 30. GECLOGICAL SOCIETY, at 8.-On certain Physical Phenomena exhibited y the so-called "Raised Beaches" of Hope's Nose and the Thatcher kak, Devon: D. Pidgeon.-The so-called Upper Lias Clay of Down Ciffs: S. S. Buckman.-The Devonian Rocks of South Devon: W. A. E. Ussher.-On some New Mammals from the Red and Norwich Crags: E. I Newton.-On Burrows and Tracks of Invertebrate Animals in Paleozoic Rocks, and other Markings: Sir J. W. Dawson, K.C.M.G., F.R.S. SOCIETY OF ARTS, at 8.

ROYAL SOCIETY, at 4.30.

THURSDAY, MAY 1.

LINNEAN SOCIETY, at 8.-Quantitative Examination of Water-meadow Herbage: Prof. W. Fream.-On some Old World Species of Scorpion: R. 1. Pocock.

CERVICAL SOCIETY, at 8.-The Conditions under which Hydrogen itroxide is formed by the Oxidation of Ether: G. Wyndam Dunstan and T. S. Dymond.

ITITUTION OF MECHANICAL ENGINEERS, at 7.30.-Inaugural Address: Joseph Tomlinson, President.-Research Committee on Marine-Engine Tras: Report upon Trials of Three Steamers, Fusi Yama, Colchester, Tarlar: Prof. Alexander B. W. Kennedy, F.R.S.

RWAL INSTITUTION, at 1.30.-Annual Meeting. At 3.-The Heat of the Moon and Stars (the Tyndall Lectures): Prof. C. V. Boys, F.R.S.

[blocks in formation]

WILLIAM WESLEY AND SON,

Scientific Booksellers and Publishers,

28 ESSEX STREET, STRAND, LONDON. Just Published, Price 3d.

A Classified Catalogue of NEW and SECOND-HAND WORKS in

ASTRONOMY,
MATHEMATICS,
PHYSICS.

W. WESLEY & SON, 28 Essex Street, Strand, London.
EYESIGHT AND SPECTACLES.

Homœopathic Review, October 1, 1889:-"Parents and those that shrink from using spectacles should read an original book, 'IS BAD SIGHT ON THE INCREASE?'"

The School Board Chronicle, August 31, 1889:-" Valuable information can be gleaned from its pages."

"

The Morning Post, July 23, 1889:-"A considerable amount of common sense in Mr. Fournet's arguments." Printed by EYRE & SPOTTIS WOODE, 196 pp., 15 Stamps, post free. Address

18 BENTINCK ST., MANCHESTER SQUARE, LONDON, W. PROPER GLASSES PRESCRIBED, 5s.

By Author of the Above. Hours, 10 till 7. Spectacles and Eye-glasses at Civil Service Store Prices.

MANUSCRIPT COPYING

By Typewriter. Special attention given to Papers on Technical Subjects for Public Reading.

Price, 1s. 3d. per 1000 Words. Manifold Copies, 15. per 1000 Words. STANDARD TYPEWRITING CO., 90 & 91 Queen St. (third floor), E.C. and at 38 Arlington Square, N., and 41 Goldney Road, W. SILVERED-GLASS REFLECTING

TELESCOPES.

CALVER'S well-known TELESCOPES received the Highest Award for "Excellence and Improvements" at the International Exhibition, London. Catalogues and Testimonials, 15.-G. CALVER, F.R.A.S., Widford, Chelmsford.

NERVOUS EXHAUSTION.

PULVERMACHER'S WORLD-FAMED

GALVANIC BELTS

for the Cure of NERVOUS COMPLAINTS have received Testimonials from three Physicians to Her Majesty the Queen, and over Fifty Members of the Royal College of Physicians of London.

The distressing symptoms of NERVOUS EXHAUSTION, loss of MUSCULAR POWER, RHEUMATISM, SCIATICA, PARALYSIS, EPILEPSY, &c., are speedily removed by means of

PULVERMACHER'S World-famed Galvanic Belts,

DICTIONARY OF CHEMISTRY. which convey the electric current direct to the affected parts, gradually

[blocks in formation]

stimulating and strengthening all the nerves and muscles, and speedily arresting all symptoms of premature waste and decay.

[ocr errors]

Dr. VINES, Fellow of the Royal College of Physicians, writes, September 19, 1885 Having used Mr. PULVERMACHER'S BELTS for many years, in the course of medical practice, I am in a position to speak of their great value as a curative agent in cases of nervous disease or functional malady where Electricity is likely to be serviceable. I am entirely convinced of their efficacy."

Dr. C. HANDFIELD JONES, F.R.C.P., F.R.S., Physician to St. Mary's Hospital, says:-"I am satisfied that Mr. PULVERMACHER is an honest and earnest labourer in the field of science, and I think he deserves to meet with every encouragement from the profession and scientific men.'

"

Sir CHARLES Locock, Bart., M.D., says :-"PULVERMACHER'S BELTS are very effective in neuralgia and rheumatic affections, and I have prescribed them largely in my practice for other similar maladies, paralysis, &c." For full Price List and Particulars see new Pamphlet, "GALVANISM: Nature's Chief Restorer of Impaired Vital Energy." Post free from

PULVERMACHER'S

GALVANIC ESTABLISHMENT. 194 REGENT STREET, LONDON, W. ESTABLISHED OVER FORTY YEARS.

F. H. BUTLER, M.A. Oxon., Assoc.R.S. Mines, NATURAL HISTORY AGENCY,

158 BROMPTON ROAD, LONDON, Dealer in Rocks, Minerals, Fossils, and other Objects of Scientific Interest,

Begs to announce that he has REMOVED his extensive Collections to more Commodious Premises at the above Address, and has thus secured greatly increased facilities for the execution of Orders.

A Large Assortment of Hammers of New Pattern, for all classes of Rock-collectors, has just been added to Stock, also a fresh Series of Microsections illustrative of Teall's "British Petrography."

BRYCE-WRIGHT'S MUSEUM,

26 SAVILE ROW, LONDON, W.

(OFF REGENT STREET),

[blocks in formation]
[ocr errors]

Man spricht Deutsche.

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.

[subsumed][ocr errors][subsumed]

Waltham Bros, Brewers. London.S.W

PERKEN, SON, & RAYMENT,

MANUFACTURE PHOTOGRAPHIC APPARATUS

Of every description.

KING, MENDHAM, & Co..

Electrical Engineers

[graphic]

AND

Manufacturing Electricians. SPECIALTIES-K. M. B. Paten Pocket Galvanometer. Price, Post fre 125. gd.; Case, 15. 6d. extra. Testing Instruments, Primary Batteries, Wim hurst Machines of Improved Pattern Western Electrical Works, BRISTOL.

NEW ILLUSTRATED CATALOGUE, Post free, 44.

Specially compiled List of Electrical Publications, post free, ad

[graphic]
[ocr errors]

ESTABLISHED 1852. 99 HATTON GARDEN. CATALOGUE FREE.

Discount for the Trade and Profession.

London, E.C.

"OPTIMUS" PHOTOGRAPHIC SETS," OPTIMUS" MAGAZINE CAMERA "OPTIMUS" PHOTOGRAPHIC LENSES

[merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]
[graphic]

APPARATUS,

Approved by Science and Art Department.

HARVEY & PEAK,

6 CHARING CROSS ROAD, W.C.

MESSRS. MACMILLAN AND CO.'S NEW BOOKS.

MYTHOLOGY AND MONUMENTS OF ANCIENT ATHENS: being a Translation of a portion of the "Attica" of Pausanias, by MARGARET DE G. VERRALL.

With Introductory

Essay and Archæological Commentary by JANE E. HARRISON, Author of "Myths of the Odyssey," "Introductory Studies in Greek Art," &c. With Illustrations and Plans. Crown 8vo, 165.

The Scotsman says:-"Miss Harrison's admirable and scholarly work upon the Mythology and Monuments of Ancient Athens' appeals strongly to two classes of readers. In the first place, tourists who have had a classical education and visit Athens id not have a better guide-book than this, which was written on the spot, and which keeps the present state of Athens always in new while describing its past glories. In the second place, the Hellenist who wishes to understand Pausanias, whether he goes to Athens or not, must study this work... Miss Harrison's work, it remains to add, is illustrated by a series of valuable plates and grams. The volume substantially enriches the literature of classical antiquity."

AMONG THE SELKIRK GLACIERS: being the Account of a Rough Survey

in the Rocky Mountain Regions of British Columbia. By WILLIAM SPOTSWOOD GREEN, M.A., F.R.G.S., A.C., Author of "The High Alps of New Zealand." Crown 8vo, 7s. 6d.

The Yorkshire Post says:-" It is emphatically one of the most interesting travel-books of the year. There are, it should added, some excellent illustrations."

The Manchester Examiner says:-"Mr. Green tells his story of undaunted perseverance in a simple and straightforward 1per, and one does not need to be either a mountaineer or a map-maker to read his book with interest from beginning to end. The book is illustrated from sketches and photographs of the remarkable scenery taken on the spot."

The Scottish Leader says:—“ Altogether the book is one of the most valuable and interesting contributions recently made to the iterature of travel." Now Ready, Parts I. and II., Price 8s. each.

MONOGRAPH OF THE BRITISH CICADE OR TETTIGIDE (Frog

hoppers and Grassflies). By GEORGE BOWDLER BUCKTON, F.R.S., Corr. Memb. Acad. Nat. Hist. of Philadelphia, Memb. de la Soc. Ent. de France. Illustrated by more than 400 Coloured Drawings. In Eight Parts. Demy 8vo. Parts I. and II. 8s. each. ORGANIC EVOLUTION AS THE RESULT OF THE INHERITANCE OF ACQUIRED CHARACTERS ACCORDING TO THE LAWS OF ORGANIC GROWTH. By Dr. G. H. THEODOR EIMER, Professor of Zoology and Comparative Anatomy in Tübingen. Translated by J. T. CUNNINGHAM. M.A., F. R. S. E., late Fellow of University College, Oxford. Part I., with Six Figures in the Text. 8vo, 12s. 6d. THE THEORY OF DETERMINANTS IN THE HISTORICAL ORDER OF ITS DEVELOPMENT. Part I., DETERMINANTS IN GENERAL. Leibnitz (1693) to Cayley (1841). By THOMAS MUIR, M. A., LL.D., F.R.S. E., Author of "A Treatise on the Theory of Determinants," and other works. Svo, 10s. 6d.

AL ARTILIES :

Now Ready, Part XLIX., Price 38. 6d.

BRAIN:

A JOURNAL OF NEUROLOGY.

Edited for the Neurological Society of London by A. DE WATTEVILLE.

CONTENTS.

the Simulation of Hysteria by Organic Disease of the Nervous System. fy Thomas Buzzard, M.D., F.R.C.P.

Ghee Visual Area of the Cerebral Cortex, and its Relation to Eye Movemenis. By Prof Hermann Munk (Berlin).

A Cetribution to the Pathological Anatomy of Chorea with tbe Report of
#fave. By Charles L. Dana, M.D (New York).

Ydes on a Case of Tumour of the Cerebellum with an Absence of all
By P. W. Macdonald, M.D.

of Hæmorrhages in and about the Pons. By J. S. Risien Russell, MB, and James Taylor, M.A., M.B.

CLINICAL CASES:

A Case of Bulbar Paralys's without Structural Changes in the Medulla.
By Lauriston E. Shaw, M.D., M R.C.P.

A Case of Poliomyelitis Chronica occurring in a Child aged Five Years.
By F. W. Kirkham.

A Case of Hemiatrophy of the Tongue, with its Pathology. By E. F.
Trevelyan, M.D. (Lond.), B.Sc.

Case of General Paralysis Complicated by Aphasia. By C. Price Tanner.
CRITICAL DIgest :-

Chronic Hydrocephalus. By M. Armand Ruffer, M.A., M.D.

MACMILLAN AND CO., LONDON.

Excellent Copies of the actual, natural Handwriting,_also of Drawings, Music, even of elaborate Sketches, Programmes, Pians (up to Double-Elephant size). Shorthand, and Type Writing, are easily, quickly, and cheaply produced by the

AUTOCOPYIST

Very fluid ink, used with ordinary pen and paper. Auto-Circulars resemble written letters. Used at the House of Lords, &c.

AUTOCOPYIST DEPT. (A. E. T. Co., Ld.), London Wall, London, and 52 Princess Street, Manchester.

HOLLOWAY'S PILLS

THIS
MEDICINE

2 unequalled in the Cure of all Disorders of the LIVER, STOMACH, KIDNEYS AND BOWELS. A Great PURI. FIER of the BLOOD; a Powerful Invigorator of the System, if suffering from WEAKNESS AND DEBILITY, and is unequalled in Complaints incidental to Females.

[merged small][merged small][ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small]
[graphic][subsumed][subsumed][subsumed][subsumed]
« PrejšnjaNaprej »