GLACIAL LUNOID FURROWS. 299 



curred at Indian Harbor on the northern shore of Ham- 

 ilton Inlet, near the fishing establishment of Mr. Nor- 

 man. This harbor is a narrow " tickle" or passage, where 

 the Domino quartzites, very smoothly worn and pol- 

 ished, are capped by trap overflows, and run under the 

 water to the depth of thirty feet, forming a polished and 

 smooth bottom to the harbor. The marks occur about 

 twenty-five feet above the water's edge, and below the 

 line of lichens which are kept at a distance by the sea 

 spray. 



These crescent-shaped depressions, which run trans- 

 veirsely to the course of the bay, were from five to four- 

 teen inches broad by three to nine inches long, and 

 about an inch deep vertically in the rock. Their inner 

 'or concave edge pointed southwest, the bay running in 

 a general S.W. and N.E. direction. They were scattered 





GLACIAL LUNOID FURROWS AT INDIAN TICKLE, LABRADOR. 



irregularly over a surface twenty feet square. When 

 several followed in a line, two large ones were often 

 succeeded by a couple one quarter as large, or vice versa. 

 Also at Tub Harbor, on the southern coast of this bay, 

 similar markings, but less distinct, occurred about the 

 same distance above the sea, and on a similar polished 

 quartzite. These agree precisely with .the "lunoid fur- 

 rows" of Mr. DeLaski, as observed by him in great 

 abundance on Isle-au-Haut, in Penobscot Bay, speci- 



