312 Scientific Intelligence, 
Mr. Bell states that the valley of Red River from Fort Garry 
to Lake Winnipeg is underlaid by Lower Silurian magnesian lime- 
stone, and that above are Devonian rocks, which are exposed on 
various points and eng in Lakes Manitoba and Win nnipegoos. 
Coal was found among sandy and clayey strata in the Dirt Hills, 
96 miles southwest of Fort Qu’Appelle, and at the Woody Moun- 
‘tains in the intermediate region. At the latter place, where the 
formation is 200 feet thick, eight seams were counted, one of them 
sandstones of the Souris are probably Tertiary, states that the line 
between the Tertiary and the Cretaceous formation enters British 
se niee ry in the neighborhood of the Roche Percé, and thence 
} ns northwestward to the Elbow of the South Saskatchewan, 
cupied is the “ coal-bearing Tertiary.” The coal beds are partly 
true lignit 
With aed to the Drift, Mr. Bell states that the direction of 
the strie to the north and northwest of Lake Superior is in gen- 
eral southwestward, and that the same course prevails as far east 
as the Ottawa River; and “there is little doubt that the same 
course prevails for some distance to the north and west of Lake 
Winnipeg ; for the plains west of the lake and of West River are 
covered with the debris of rocks derived from the east of the lake.” 
confirm the statements of others, and sustain the conclusion of 
the writer chat efrom*—that the greater height of the ice-surface 
oe mat Lona of precipitation and the high degree of heat in 
ould have put the southern limit of the ice north of the 
limits ‘of the United States. The summer isotherm of 72° F., which 
to latitude 47°; and over this area and also its extension far north 
and likewise far west to a line passing by Sierra Nevada and the 
Dalles in Oregon, the amount of annual 2 sien sonst 
to Schott’s Rain Chart, is sixteen inches and le 
* This Journal, IIT, ii, 324; v, 204, — } Ibid, v, 206, 208. 
