Abstract

PARIS. Academy of Sciences, September 4.—M. Armand Gautier in the chair.—Kr. Birkeland: The electrical constitution of the sun. A development of views put forward in two earlier communications. The photosphere is regarded as a sea of electric arcs. The bearing of these views on Laplace's nebular hypothesis is discussed, since, if matter is radiated under the action of electrical forces, it is not necessary to assume that at one time the nebula extended to the orbit of Neptune, and this reduces the force of Moulton's objections to Laplace's theory.—M. Merlin: Some theorems of arithmetic and an enunciation which contains them. Henri Viliat: A mixed problem of the theory of harmonic functions in an annular area.—Ed. Griffon: A singular case of variation by budding in the peach tree. A description of the appearance of shoots of almond, bearing blossom, on a peach tree.—Marcel Baudouin: Human post-mortem actions on the human bones in the bone caves of the polished stone period.— Stanilas Meunier: An Egyptian meteorite recently presented to the museum. This meteorite appears to belong to a new lithological type, and will be described in detail in a later communication.

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