200 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



California, to Arizona, southern New Mexico, and north-west 

 Texas, and down the Rocky Mountain system of British 

 Columbia, Idaho, Montana, to northern Mexico. 



Douglas fir forms extensive forests in Vancouver Island, 

 but is rare on the west coast and is not found at all north 

 of Quatsina Sound. It crosses the centre of Broughton 

 Island, then turns north going round Seymour Inlet, and 

 continuing in a more or less northerly direction, crossing the 

 extreme east end of King Island, thence in a narrow strip up 

 to the north end of Gardner Canal. From the north end of 

 Dean Channel it goes in a south-east direction to lat. 52° 18'. 

 Turning here it goes almost straight north, crossing the east 

 end of Babine Lake, turning eastwards at the extreme south 

 end of Talca Lake, 55° 10', to Fort M'Leod. From here it runs 

 south-east to Mount Robson, thence going east again, crossing 

 the G.T.R. south of Bride Lake, continuing in a south-east 

 direction on the eastern slopes and foothills of the Rockies into 

 north-west Montana. It occurs on the south bank of the Bow 

 River, ih mile from the city of Calgary, Alberta. The Stony 

 Indians cut large quantities for cordwood, etc., around the 

 town of Morley, about ten miles from the entrance of the 

 C.P.R. into the mountains. 



Douglas fir is everywhere abundant in Washington, except 

 in the Columbia River plains, being more abundant on the 

 western slopes than on the eastern sides of the Cascades, and 

 extending from sea-level up to 5000 feet. 



In Oregon, Douglas fir is most abundant on the western side 

 of the Cascades, being absent, however, from the intervening 

 arid valleys, from sea-level up to 6000 feet, and occurs more 

 scattered in the north-eastern part and in the adjacent area of 

 south-east Washington. 



In California, it is found in the north-western mountains, the 

 Sierras, and southwards to the San Joaquin River (but is absent 

 from the Great Basin north of the Colorado River), and on the 

 coast in a comparatively narrow strip to about lat. 35°. It is 

 not found between the Sierras and the Coast Range. 



Douglas fir enters north-west Montana east of long. 115° and 

 is spread over most of northern and central Idaho and the 

 Wahsatch Mountains of Utah and western Wyoming, In 

 Montana, it continues in a south-east direction to lat. 45° and 

 long. 110°, going eastwards to a little beyond long. 105° in 



