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Rh European boards of spruce or Scotch fir in the west coast colonies, although drift-wood is still considered preferable, especially on account of its lightness.

This framework is covered externally with skins, as a rule with the skin of the saddleback seal (Phoca grœnlandica), or of the bladder-nose or hood seal (Cystophora cristata). The latter is not so durable or so water-tight as the former; but the skin of a young bladder-nose, in which the pores are not yet very large, is considered good enough. Those who can afford it use the skin of the bearded seal (Phoca barbata), which is reckoned the best and strongest; but, as it is also used for harpoon lines, it is, as a rule, only on the south and east coast that it is found in such quantities that it can be commonly used for covering the kaiak. The skin of the great ringed seal (Phoca fœtida) is also used, but not so frequently.

The preparation of the kaiak-skins will be described subsequently, in Chapter VIII. They are generally fitted at once to the kaiak in a raw state; but if they have been already dried they must be carefully softened for several days before they can be used. The point is to get them as moist and pliant as possible, so that they can be thoroughly well stretched, and remain as tense as a drum-head when they dry. The preparation of the skins, and the sewing and stretching them on the kaiak, belongs