Abstract
ROME. Royal Academy of the Lincei, June 3.—Leonida Tonelli: The quadrature of surfaces.—A. Bemporad: The astrographic catalogue of Catania.—Ferruccio Zambonini: The presence in the products of the present - day activity of Vesuvius of a caesiferous variety of potassium fluoborate. For a crystalline sublimate from Vesuvius, consisting of potassium and caesium fluoborates in isomorphous mixture, the name ‘avogadrite’ is proposed.—Luisa Pelosi: Certain geometrical maxima and minima.-Mauro Picone: The singularity of harmonic functions.—Oscar Zariski: The impossibility of resolving para-metrically by radicals an algebraic equation f(xy) = o of the genus p>6 with general moduli.-Umberto Crudeli: Models of the helium atom.—R. Mazet: Oscillations of a liquid in connected vessels.—Vasco Ronchi: The limit of resolution of spectroscopic apparatus. The expression ‘resolving power’ of a prism, grating, etc., is shown to be inaccurate, since such apparatus is characterised only by dispersion. The resolution depends on the means by which it is examined and, when diffraction images are observed, is only one-half as great as when interference images are employed.—Mario Picotti: The results of the physico-chemical researches carried out on the Royal Italian cruiser Marsigli in the Straits of Messina. Observations on the temperature and salinity of the water are described.—Fausta Bertolini: Conformation of the stomach of the Teleostei in relation to the nutrition.—M. Sella: The migration of the tunny studied by means of fish-hooks.
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Societies and Academies. Nature 118, 287–288 (1926). https://doi.org/10.1038/118287b0
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DOI: https://doi.org/10.1038/118287b0