L. V. Pirsson — Geology of Conanicnt Island. 



365 



Everywhere on the island occur bowlders of the glacial 

 drift, among which by far the most common rock is a coarse 

 conglomerate containing rounded granitic and quartzose pebbles ; 

 furthermore this conglomerate is seen in the bowlders not only in 

 normal condition but also at times evincing the fact that before 

 removal it had suffered dynamic pressures resulting in a gneis- 



Fig. 2. 



SCALE OF f££ 



soid condition. Masses of it from six to eight feet in diameter 

 occur at times. Granite, gneiss and slates occur also as bowl- 

 ders and pebbles in the drift. The island is covered with a 

 fertile soil but is too narrow to give rise to any but inconsid- 

 erable drainages. 



