Abstract
Bulletin de l'Académie Imperiale des Sciences de St. Petersburg, t. xxvii., No. 1, February, 1881.—On the results of experiments on the resistance of the air and their application to the solution of problems of firing, by M. Mayevsld.—On variations of the fur and on the geographical distribution of the sea-otter (Enhydris marina), by M. Brandt.—On the integration of partial equations of the first order with several variables whose co-efficients are constant, by M. Alexéeff.—On the rotation of Jupiter, by M. Kortazzi.—Crystals of beryl from a part of the Southern Oural, by M. Kokscharow.—On the formation of some nitrated derivatives of some hydrocarbons of the fatty series by direct action of nitric acid, by M. Konowalof.—On the variability of forms of Lubomirskia Baïcalensis, and on the distribution of sponges of Lake Baikal, by M. Dybowski.—On universal time, and on the choice for this purpose of a prime meridian, by M. Struve.—Anatomy of the lactiferous glands during the period of lactation, by M. Saeffligen.—On the speclroscopy of hydrogen, by M. Hasselberg.
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