the sea water, and the dip of the magnetic needle were ascertained here,
as well as at other points in the Arctic; and as the observations are
entirely new, I give the results in the accompanying tables. The water
densities are from observations of Mr. F.E. Owen, Assistant Engineer of
the _Corwin_.

The instruments used in obtaining the results were a thermometer and a
hydrometer. Water was drawn at about six feet below the surface and
heated to a temperature of 200° F., and the saturation, or specific
gravity is shown by the depth to which the hydrometer sank in the water.
As sea water commonly contains one part of saline matter to thirty-two
parts of water, the instrument is marked in thirty-seconds, as 1/32,
2/32, etc., and the densities are fractional parts of one thirty-second:

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POINTS OF OBSERVATION. Temperature. Density.
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At Saint Michael's, Bering sea 50 1/4

Off Plover bay, Asia 34 3/4

Arctic ocean, near Bering straits 32 3/4

Arctic ocean, near ice on Siberian coast 32 5/8

Bering sea, off Saint Lawrence island 34 3/4

Golovine bay, Bering sea, July 10 42 1/2