46 THE CANADIAN NATURALIST. [Yol. X. 



Erratics are met with occasionally here and there in this region 

 whose presence I am unable to account for without bringing in 

 the agency of floating ice. One of these may be seen in a gorge 

 four miles south-east of Campbellton, through which flows a 

 stream following the Tobique road. It is a grey conglomerate 

 about eight feet in diameter, closely similar to rocks which oc- 

 cupy the valley of the Restigouche to the east. It lies sixty or 

 seventy feet above sea level, and must have been transported 

 thither by floating ice which moved up stream. At Knight's 

 farm, near Bathurst, already mentioned, a few erratics are met 

 with also resembling rocks in Restigouche County ; and like in- 

 stances of the transport of large blocks occur at other localities, 

 indicating that other carrying agents were in operation besides 

 the glacier whose striae have been observed. It is probable that 

 these latter have been borne to their present sites by icebergs 

 after the iee-sheet had disappeared ; and their deposition may 

 have been contemporaneous with that of the stratified marine 

 clay (Leda clay) of the region. The subsequent denudation 

 which the Post-Pliocene deposits underwent has left them exposed 

 on the surface. 



From a study of all the facts obtained up to the present date 

 in reference to the drift striae and till of this region I have come 

 to the conclusion that the mass or masses of ice which moved 

 over it and scored the rocks in the manner described must have 

 been of considerable magnitude. The first set of striae, if pro- 

 duced by one body of ice, as seems probable, shows that the 

 sheet has been at least six or seven miles wide near Campbellton, 

 filling the valley of the Restigouche to a depth of several hun- 

 dred feet and mantling the hills to the south of it. East of the 

 Dalhousie hills its width would increase, and must have been very 

 much greater. It probably stretched over the greater part of 

 the Eel river and Charlo river district, which lies immediately 

 south of these hills. At Heron Island it could not have been 

 less than fifteen to twenty miles in width, occupying the whole 

 depression of the Bay here and covering a portion of the district 

 to the south, increasing in extent laterally and probably lessening 

 in thickness towards the east. 



The second set, that is, the striae occurring between Belle- 

 dune and Petite Roche, afibrd indubitable evidence, from their 

 regularity of direction, the close parallelism of the scratches and 

 their position on an even sloping surface, that the portion of the 



