Land-ice consists of drift-ice attached to the shore; or drift-ice which, by being covered with mud or gravel, appears to have recently been in contact with the shore; or the flat ice resting on the land, not having the appearance or elevation of icebergs.

Tide-hole. A well sunk in the ice for the purpose of observing tides.

A tongue is a point of ice projecting nearly horizontally from a part that is under water. Ships have sometimes run aground upon tongues of ice.

Tracking. Towing along a margin of ice.

Water-sky. A dark appearance in the sky, indicating “clear water” in that direction, and forming a striking contrast with the “blink” over land or ice.

INDEX

By AGNES C. LAUT