THE EOCKY MOUNTAIN EECIION OF CANADA. 3 



forty miles. Coal Creek and Martin Creek, from which some of the best preserved speci- 

 mens are derived, are small tributaries of Elk River, on Crow's Nest Pass, west of the 

 watershed range. The point on the north-west branch of the North Fork of Old Man 

 River, which has yielded a small collection, is at an angle of that branch, about two miles 

 above its month, east of the watershed range, and between it and the Livingstone 

 range. A few specimens were also obtained on the North Fork, about two miles east of 

 the Livingstone range, in the foot-hill belt. Others were found in the valley of the first 

 small stream crossed by the trail at the entrance to the North Kootanie Pass, and a small 

 collection was also made on Bow River, opposite Canmore Station on the Canadian 

 Pacific Railway. In all these localities the plants were closely associated with seams of 

 coal, which in the last mentioned has become an anthracite. It is further probable, on the 

 evidence of a few fragmentary plants of the same character, that the coals found in the 

 Middle Fork of the Old Man, two miles below the falls, are on or near the same horizon. 



" That the series characterized by these plants is a wide-spread and important one, is 

 shown by the fact that one of the species {Pinus Smkicaensis) had previously been found on 

 Suskwa River, in northern British Cohtmbia, at a distance of 580 miles north-west of 

 the most northern locality above mentioned. This place is within 150 miles of the Pacific 

 coast, in the centre of a wide area of Cretaceous rocks, chiefly sandstones. In these, at 

 another point, some miles distant, a single mollusc was also found, which appears to be 

 a Thracia, and is regarded by Mr. "Whiteaves as very near to, if not specifically identical 

 with, T. semiplanata. This species is one of those found in the Cretaceous rocks of the 

 Queen Charlotte Islands about 250 miles distant, which are believed to be of the age 

 of the Gaiilt ; and, while it is by no means certain that the horizon from which this fossil 

 was obtained is the same with that yielding Pinus Suskwaensis, its presence tends to show 

 that the very thick Cretaceous series of the Skeena and Suskwa region may, in part at 

 least, represent the coal-bearing rocks of the Queen Charlotte Islands. 



" Respecting the other places mentioned in this paper, as localities from which plants 

 referable to later stages in the Cretaceous have been collected, the following notes may be 

 given : — 



North Branch, North Fork, Old Man River. This place is eight miles from ' The Grap,' 

 where the North Fork leaves the mountains, and within the Livingstone Range. 



North-west Branch, North Fork, Old Man River. The fossils so referred are from a 

 point further up the branch than those of the Kootanie series found on the same stream, 

 about foiirteen miles from its mouth, and a quarter of a mile up a small stream which 

 enters from the north. 



Mill Creek, a tributary of the South Branch of Old Man River in the foot-hills. The 

 specimens are from several points a few hundred yards above the Mill. 



South Saskatchewan. Collections from places a few miles below the junction of the 

 Bow and Belly Rivers, near Cairn Hill. 



Saskatchewan Coal Mine, near Medicine Hat, on the South Saskatchewan. 



Pincher Creek. From cliffs and high banks in the valley, just above the crossing 

 place of the road to the Mill. These beds are in the upper part of the St. Mary sub- 

 division of the Laramie." 



It will be observed, that the above stratigraphical notes refer to beds holding fossil 

 plants which range from a very low Cretaceous or Jurasso-Cretaceous horizon upward to 



