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important part in the chemistry of their metabolism.-Dr. in ova laken from the oviducts a number of spermatozoa pene Rosenberg demonstrated a new reaction of uric acid. When trate deeply among the yolk-masses as far as the level of the urine is made faintly alkaline, it yields a dark blue colouration female pronucleus. Peculiar karyokinetic appearances ar on the addition of phosphotungstic acid, which he had satisfied described. - Contribution to the theory of the even Abeliza himself was due to the presence of uric acid alone among the sigma-function of three arguments, by Érast Pascal. This is a other constituents of the excretion. - Dr. Goldscheider gave an continuation of the author's previous work on the odd sigmaaccount of some experiments which he had made some five years function. The terms of the developments are combinants of a ago, to show that the principle of “specific nerve energy” holds net of quaternary quadratic forms. -On a hyperelliptic multi. good for the sense of taste. By isolated stimulation of separate plication equation, by H. Burkhardt. This equation for hypertaste-papillæ he succeeded in showing that there exist, in all, four elliptic functions (p = 2) is the generalisation of Jacobi's kinds or qualities of taste-sour, sweet, bitter, and salt ; and that equation for elliptic functions. specific end-organs exist for each kind of taste. By electrical stimulation there arises at the anode not only the sensation
AMSTERDAM of sour, but also of bitter and sweet ; at the kathode purely sensory impulses are aroused in addition to the gustatory, and
Royal Academy of Sciences, March 29.-Prof. van der to the fusion of these two is due the "alkaline" taste of which
Waals, Vice-President, in the chair.-M. H. A. Lorentz deal! some authors speak. It appeared from his researches that the
with the molecular theory of diluted solutions. He showed how hard palate contained end-organs chiefly for the perception of
the known formula for the vapour-pressure of such solutions may sweet tastes. —Dr. I. Munk spoke on muscular work and
be derived from considerations on molecular motion and attracnitrogenous metabolism. He criticized the recent work of
tion, and how a similar theory applies to a conceivable mechanism Argutinsky, according to which the work done in climbing a
of osmotic pressure.—M. Baehr gave some observations on the mountain, and the heat produced, are the outcome of a breaking
herpolhodie of Poinsot, and explained that this cannot have any down of nitrogenous material. Having recalculated Argutinsky's
points of inflexion, unless the ellipsoid be not a central one.-M. results, he came to the conclusion that (1) his body was not in
Pekelharing spoke of "the destruction of anthrax spores by
rabbits' blood." nitrogenous equilibrium even during rest ; (2) the amount of carbohydrate which he took was insufficient to account for the
STOCKHOLM. heat-production during rest. As is well known, both these Royal Academy of Sciences, April 9.-On the researches factors lead to an increased nitrogenous metabolism when extra in zoology made at the Zoological Station of the Academy during work is done, the energy required for the excess of work being 1889, by Prof. S. Lovén.-On the possibility of the triangularion obtained from the breaking down of proteids ; hence no con. of Spitzbergen, by Prof. Rosén. -An analysis of the liquid clusions as to wbat normally takes place can be drawn from inclosures in topaz, or the so-called Brewsterlinite, by Otto Argutinsky's experiments. He further pointed out that Nordenskiöld.-On the use of invariants and seminvariants for Oppenheim's experiments have shown that dyspnoea leads to the solution of common algebraic equations of the four lowest increased nitrogenous metabolism, and that hence dyspnoa may degrees, by Dr. A. Bergen.-On the structure of the fruit-wall very probably have played some part during the exertion of in the Labiatæ, by Miss A. Olbers. -Some researches on acciexcessive climbing. While not doubting the accuracy of the dental double refraction of gelatinous substances, by Dr. G. experiments, he did not feel that the conclusions which Bjerkén.-On the action of iodohydric acid on 1.5 nitronaph. Argutinsky had drawn from them were justifiable.
thalin-sulphon-acid-amid, by A. Ekbom. GÖTTINGEN. Royal Society of Sciences, Oct. 15, 1889. - On the granular
PAGE pigments occurring in man, by Dr. F. Maas. Two chemically distinct groups of pigments occur : (1) melanin, (2) the granu- The Revised Instructions to Inspectors
577 lar colouring matters here referred to. The latter are found at Oranges in India. By C. B. Clarke, F.R.S.
570 all periods of life, but increase in quantity and in the size of the A Naturalist among the Head-bunters. By A. R. W.
582 granules with age. They are normal products, not morbid. Our Book Shelf:They are not only transformed but produced by the corpuscle. Girard : “Recherches sur les "Tremblements de carrying cells. They are not wholly derived from the blood :
333 the pigment found in the heart is derived from a fatty body. The Eder : La Photographie à la Lumiere da Mag: several pigments can be distinguished by their reactions with
nésium hydrochloric and acetic acids, and with caustic potash.-On the Letters to the Editor :analogue of Kummer's surface for p = 3, by W. Wirtinger. Panmixia.-Prof. George J. Romanes, F.R.S. ; The author investigates the continuum obtained by taking, as R. Haig Thomas
594 the eight homogeneous point.co-ordinates of a 7-dimension The “Rollers" of Ascension and St. Helena-Prof. space, eight linearly independent squares of theta-functions of Cleveland Abbe.
585 three variables. It appears that this possesses collineations Self-Colonization of the Coco-nut Palm. -Captain analogous to the system for Kummer's surface, as also the cor. W. J. L. Wharton, R.N., F.R.S. responding system of reciprocal transformations into itself.
Nessler's Ammonia Test as a Micro-chemical Reagent October 23, 1889. -Determination of the elastic constants of for Tannin.--Spencer Moore Iceland spar, by W. Voigt. The author uses the refraction The Moon in London.-T. R. R. Stebbing . observations of G. Baumgarten, and gives elaborate tables of his Foreign Substances attached to Crabs.-Ernest W. own measurements. He discusses the property of spar by
L. Holt. which the crystal can be forced by shearing into its twin form, The Relative Prevalence of North-east and Southand gives diagrams illustrating the changes in the traction and west Winds. -William Ellis torsion coefficients.- Determination of the elastic constants of Science at Eton.-Lieut. -General J. F. Tennant, certain dense minerals, by W. Voigt and P. Drude. The
R.E., F.R.S. minerals are dense fluor spar, Solenhofen stone, and dense Modigliani's Exploration of Nias Island. (ilius: barytes.
trated.) By Prof. Henry H. Giglioli
33; December 3, 1889.-On thermo-electric currents in crystals, by Notes
501 Th. Liebisch. The author confirms some of Bäckström's results, Our Astronomical Column :and finds that, in a rectangular parallelepiped of homogeneous Objects for the Spectroscope.-A. Fowler .
593 conducting crystal of the triclinic system, embedded in homo. Mathematical Study of the Solar Corona .
505 geneous isotropic “normal” metal, “the thermo-electric force Solar Observations
500 in the direction of the steepest temperature gradient is repre. D'Arrest's Comet . sented by the squared reciprocal of the parallel radius vector of Influenza and Weather, with Special Reference to a certain ellipsoid E.”-On contrast-phenomena resulting from the Recent Epidemic. By Sir Arthur Mitchell and suspended attention, by Dr. F. Schumann. Psycho-physical Dr. Buchan .. experiments on the estimation of short periods of time, &c. Mathematical Teaching at the Sorbonne, 1809-1889 0;
December 25, 1889.-On the fertilization of the ova of Agelastica Scientific Serials
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