"Life on the sea ice is dependent upon the igloo, the snug winter shelter of the Arctic. Among the Eskimos the Netsilik are famous for the beauty of their igloos and the speed with which they build them...

In no time at all ...a man with only his snow knife as a tool would have carved out snow blocks and put them securely in place ...making a structure so strong that a man could stand on it."

Illustration: page 26