American Journal of Science, January.—Late glacial or Champlain subsidence and reëlevation of the St. Lawrence River basin, by Warren Upham. From the Champlain submergence the Atlantic coast of North America was raised somewhat higher than now; and its latest movement from New Jersey to Greenland has been a moderate depression. As in Scandinavia, the restoration of isostatic equilibrium is attended by minor oscillations, the conditions requisite for repose having been overpassed by the early reëlevation of outer portions of each of these great glaciated areas. The close of the Ice Age was not long ago, geologically speaking, for equilibrium of the disturbed areas has not yet been restored.—An automatic mercury vacuum pump, by M. I. Pupin. This pump is a combination of a suction pump capable of raising mercury to practically any height, and an ordinary Sprengel pump, the two being connected by a siphon barometer. Mercury is pumped into the Sprengel reservoir by the suction pump. The reservoir of the latter is provided with two vertical tubes dipping into two mercury vessels. The end of one of these is higher than that of the other, so that when the mercury has fallen to the level of the end, no more mercury enters the tube, and the column already in it is bodily drawn up into the siphon barometer.—Graphical thermodynamics, by René de Saussure. The author recommends the adoption of new coordinates instead of P and V. Instead of these, he advocates the variables Φ and s, denned by the equations Φ = π/i2 and s = πα2, where i is the period and α the amplitude of the vibratory motion constituting heat. Then the value of each variable depending upon the phenomenon can be obtained graphically.—Solutions of salts in organic liquids, by C. E. Linebarger. The law enunciated by Schroeder and Le Chatelier, that the solubilities at equal intervals from the temperature of fusion for different solid bodies and in different solvents are the same, although approximately true for the cases investigated by them, is not applicable to the case of inorganic salts in normal organic solvents.