NOTES ON SUEFACE GEOLOGY— BAILEY. 5 



ous. In several instances the contents of these lakes were dis- 

 tinctly seen to be held up by drift dams across their natural 

 outlets, and their whole grouping and configuration is strongly 

 suggestive of a region resulting from a long continued and 

 intensely powerful glacial erosion, followed by a slow melting of 

 the ice cap and the very imperfect removal of the resulting 

 waters. In some instances, as along Tupper Lake, where the 

 rocks are partly granite and partly whin, the effects of striation, 

 polishing, distribution of erratics and the formation of roches 

 moutonnees, are very remarkable, and could hardly be better 

 illustrated in the Alpine valleys of Switzerland. 



From a comparison of numerous observations upon the glacial 

 striae in the interior of Queens Oounty, (chiefly north of Ponhook 

 and Molega Lakes) these were found to vary from S. 10 E. to 

 S. 20 E.. being in a few instances S. 30-35 E., and in one case 

 having an easting of as much as 60°. In two instances striae 

 having a course S. and S. 10 E. were accompanied by other and 

 apparently later striae showing a course S. 30 W. On the coast 

 of this county the striae are more nearly north and south, being 

 frequently S. or S. 5 E., rarel}'' S. 18-20 E. Going westward 

 into Shelburne the striae along the coast become more variable, 

 those between Jordan Ferry and Negro Harbor often exhibiting a 

 westerly tendency (S. 10 VV.), while between Port LaTour and 

 Baccaro they again become a little easterly. In the interior of 

 Shelburne, between Clyde and Ohio, a course of S. 70 W. was 

 observed at one point. 



It has been stated in the introductory remarks that apart from 

 the relations which the features above described must obviously 

 have to the agricultural and industiial aspects of the regions in 

 which they occur, they have also an interest In being directly 

 connected with the distribution and development of mineral 

 wealth. There are three ways in which the importance of a 

 knowledge of the superficial deposits will be readily seen, viz. : 

 (1), as tending to hide from view metalliferous lodes beneath a 

 covering of drift, as well as tending to obscure the study of the 

 associated rock structures ; (2), as helping to guide the miner or 

 prospector in his search for productive lodes ; (3), as bearing 



