Great progress has been made in the scientific mapping of the islands.

After mapping Danmark Fjord he and Iversen returned S.

The discovery and mapping of America are illustrated by F.

The task of mapping the coast was largely undertaken by officers of the Indian navy, while the first explorers of the interior were officers of the Indian army quartered at Aden - Lieut.

The " wild-cat " wells, sunk by speculators on untested territory or on lands which had not previously proved productive, played an important part in the earlier mapping out of the petroleum fields.