Geology of Puyet Sound Ba.sin. — Kiiahall. B13 
projected into, and filled at one time the orographic valley 
identified with the strait of Georgia and Queen Charlotte 
sound. This, as argued, was during the epoch of maxinuini 
glaciation as distinguished from an epoch of local glaciation. 
North of the 51st parallel local glaciers still survive. Still 
farther to the north many descend to near sea level. Glacial 
markings at an altitude of 3,000 feet, as observed in the strait 
of Georgia, afford a minimum measure of thickness of the gla- 
cier mass toward its northern development.* 
Evidence of an extension of the Cordilleran glacier through 
the orographic valley of the strait of Fuca seems not to have 
been collected at considerable elevations by the Canadian 
geologists for lack of exploration. Such evidence however, 
is clear at several poijits on the west shore of Vancouver 
island which I have visited. At the head of the fiorded inlet 
of Barclay sound drift is found at an elevation of at least 
1,150 feet on the slope of Broughton peak, together with ice- 
smoothed surfaces, and again at moderate elevation at Sooke 
harbor. 
Nor has search been made for evidence of a southern pro- 
jection of the Cordilleran glacier into the orographic valley 
f)f Puget sound. The general absence of elevated surfaces of 
rock throughout that depressed area, precludes glacial mark- 
ings except upon baseleveled surfaces which are uniformly 
concealed beneath drift. At Whatcom (Sehome) on Belling- 
ham bay, within the only section on the path of such a pro- 
jection where occasional rocky surfaces are naturally expf)sed, 
north and south grooving up to 90 feet in length, was re- 
ported by R. Brown, in the year 1870. f 
The old Talbot colliery was opened (1878) just below a 
mantle of cemented drift on an eroded slanting edge of No. 3 
coal seam, which immediately passed under cover of sand- 
stone. When stripped, a glacial surface of the sandstone was 
disclosed with scratches, as described by Mr. Whitworth, 
coursing northwest by north (mag.). In the present place 
reference may again be made to the exceptional tabular sur- 
faces of the Tejon series under thin covering of sand, a few 
feet above tide, at Alki and Restoration points, and point 
* Geol. Sur. Can. 1886, B. 99. 
t Amer. Jour. Sc, 1870, 323. 
