Into the bottom of this canoe the Yahgan put an inverted sod perhaps two by three feet large, and on this his squaw built a small fire for warmth. Forward and aft of the fire were put little layers of brush and grass. The man squatted on the grass forward of the fire, and his favorite squaw, if he had more than one, was just aft of it, the terms forward and aft being used to indicate only the direction in which the canoe travelled, for both ends were alike. The other squaws and the children were distributed further from the fire. A squaw with an infant would keep it in her lap. The squaws paddled, the men used the weapons. But one may doubt whether the Yahgan canoe shows greater ingenuity than Yahgan weapons and implements for obtaining food do. Mention has been made of the shell axe. It was made of a five-inch clam shell, or one larger. A rounded stone was lashed with sinew to the hinge side of the shell to give weight and make a good hand hold. Then the opposite side was ground to a cutting edge by rubbing away the softer inner or convex surface on a smooth rock. Yahgan chips made with this tool were small, but to see the rapidity with which an old Yahgan makes the blows, or better still, to see the wavy surface of a strip of wood dressed with a shell axe--a paddle, for instance--is a matter of interest almost worth a journey to the region. With this tool the Yahgan felled trees, or fashioned his harpoon, or stripped the blubber from a stranded whale, or trimmed his o'er long bangs, as occasion required. When compared with the stone axes used by aborigines who knew not iron, this shell axe is a striking illustration of noteworthy differences between the Yahgan and the other tribes. The shell axe was frail, but keen-edged. It required a quick but delicate hand to manipulate it. The stone axe was blunt and heavy. Impelled by a rude hand, it smashed its way through whatever opposed its progress. With the shell axe in hand, we begin to perceive somewhat of the mental habits and character of the Yahgan Indian--to see, at least, that he preferred to accomplish certain ends by delicate means rather than by sheer brute strength. Then there were his harpoons. I have one of which the head, made from a whale rib, is twenty-five and one quarter inches long. To make a diagram of it let the reader place a dot on a sheet of paper to represent the point, and then draw from this dot two straight lines that shall diverge from each other only one inch and three quarters when twenty-one inches long. That will give an idea of the beautiful taper of the weapon. It has a single barb, at once deep and strong. It is secured to the shaft in such a way that when a seal was struck the harpoon head dropped from its place in the shaft, or handle, after which the handle was towed broadside on through the water by the wounded beast. Of course, towing the harpoon shaft in this fashion impeded the animal's flight more than towing it end on would do.