153 Photo: Model of an extinct form of Athabascan type birch-bark canoe, of British Columbia. In Peabody Museum, Harvard University. 167 154 Lines of sturgeon-nose bark canoe of the Kutenai and Shuswap. 169 155 Ojibway canoe construction. (_Canadian Geological Survey photos._) 170-171 156 Photo: Indians with canoe at Alert Bay, on Cormorant Island, B. C. 173 157 Eighteenth-century lines drawing of a kayak, from Labrador or southern Baffin Island. 175 158 Western Alaskan umiak with eight women paddling, Cape Prince of Wales, Alaska, 1936. (_Photo by Henry B. Collins._) 177 159 Western Alaskan umiak being beached, Cape Prince of Wales, Alaska, 1936. (_Photo by Henry B. Collins._) 177 160 Repairing umiak frame at St. Lawrence Island, Alaska, 1930. (_Photo by Henry B. Collins._) 178 161 Eskimo woman splitting walrus hide to make umiak cover, St. Lawrence Island, Alaska, 1930. (_Photo by Henry B. Collins._) 178 162 Fitting split walrus-hide cover to umiak at St. Lawrence Island, Alaska, 1930. (_Photo by Henry B. Collins._) 179 163 Outboard motor installed on umiak, Cape Prince of Wales, Alaska, 1936. (_Photo by Henry B. Collins._) 179 164 Launching umiak in light surf, Cape Prince of Wales, Alaska, 1936. (_Photo by Henry B. Collins._) 179 165 Umiaks on racks, in front of village on Little Diomede Island, July 30, 1936. (_Photo by Henry B. Collins._) 181 166 Umiak covered with split walrus hide, Cape Prince of Wales, Alaska. (_Photo by Henry B. Collins._) 183 167 Lines of small umiak for walrus hunting, west coast of Alaska. 1888-89 184 168 Umiaks near Cape Prince of Wales, Alaska, showing walrus hide cover and lacing. (_Photo by Henry B. Collins._) 185 169 Lines of umiak, west coast of Alaska, King Island, 1886 186 170 Making the blind seam: two stages of method used by the Eskimo to join skins together. 186 171 Lines of north Alaskan whaling umiak of about 1890 187 172 Lines of Baffin Island umiak, 1885. Drawn from model and detailed measurements of a single boat. 188 173 Lines of east Greenland umiak, drawn from measurements taken off by a U.S. Army officer in 1945. 189 174 Frame of kayak, Nunivak Island, Alaska. (_Photo by Henry B. Collins._) 191