No. l.J MATTHEW — GEOLOGY OP NEW BRUNSWICK. 101 



It is not easy to account for the strong tendency of these 

 grooves to run down the southerly slopes of the land in this sys- 

 tematic way, upon the theory that they are due to icebergs alone ; 

 nor does it seem possible that ocean currents could urge the bergs 

 onward with sufficient force to lift them over hills 700 to 1000 

 feet in height, and drop them down the southern slopes to groove 

 ledges only a few feet above the sea. If the table be examined 

 in detail, objections to the iceberg theory as the sole means of ex- 

 plaining surface striation, quite as weighty as those already 

 spoken of, will be found. Others of a different kind may be 

 adduced ; as for instance the strioe on the over-hanging, as well 

 as the exposed side, of a narrow cleft in hard felspar-porphyry 

 rock at the head of Chamcook lake on the St. Andrew railroad. 



