(Danish).3 It was, however, ascertained that there is a great difference between the velocities of the glaciers in winter and in summer.
The empirical data on which the hydrodynamical investigations are based are: (I) observed velocities and directions of oceanic currents and drifts; (2) salinity; (3) density; (4) temperature of the sea water in situ; (5) oceanic soundings.
The velocities in air and water being respectively 1090 and 4700 ft.
The velocities in unit field-he takes to be 1 3 X300 for the positive, and I.
The method originally used by Huggins, who first conceived and proved the possibility of measuring stellar velocities in the line of sight, was to measure with a filar micrometer the displacement of some well-known line in a stellar spectrum relative to the corresponding line of a terrestrial spectrum.