14S I^otes on the Geologtj of Murray Bay, 



resting on stony clay. In the former, "whicli corresponds to tlie 

 Saxicava sand of Montreal, I found only a few valves of Tellina 

 Groenlandica, whicli is still the most abundant shell on the mod- 

 ern beach. In the latter, corresponding to the Leda clay, which 

 is best seen in some parts of the shore at low tide, I found a num- 

 ber of deep water shells of the following species, all of which ex- 

 cept Spirorbis spirillum and Aphrodite Groenlandica have been 

 found in these deposits at Quebec and Montreal. 



Fusus tornatus, 

 Trophon scalariforme* 

 Margarita helicina, 

 Pecten Jslandicus* 

 Tellina proxima<, 

 Saxicava rugosa. 

 Aphrodite Groenlandica, 

 Balanus Hameri. 

 Spirorbis spirillum^ 

 Serpula vermicular is. 



These shells imply a higher beach than that of this lower flatj 

 which is not more than 30 feet above the present sea level. Ac- 

 cordingly above this are several higher terraces, the heights of 

 which on the west side of the bay I measured roughly with a 

 pocket level. The second principal terrace, which forms a steep 

 bank of clay some distance behind the main road, ia 100 feet in 

 heifi-ht, and is of considerable breadth, and has on its front in some 

 places an imperfect terrace at the height of 77 feet. It corres- 

 ponds nearly in height with the shoulder over which the road from 

 the pier passes. Upon it in the rear of the property of Mr. Du 

 Berger, is a little stream which disappears under ground, prob- 

 ably in a fissure of the underlying limestone, and returns to the 

 surface only on the shore of the bay. Above this is a smaller 

 and less distinct terrace 132 feet high. Beyond this the ground 

 rises in a steep slope, which in many places consists of calcareous 

 beds, worn and abraded by the waves, but showing no distinct 

 terrace ; and the highest true shore mark which I observed, is a 

 narrow beach of rounded pebbles at the height of 326 feet. This 

 beach appears to become a wide terrace further to the north, and 

 also on the opposite aide of the bay. It probably corresponds 

 with the highest terrace observed by Sir W. E. Logan, at Bay St. 

 Paul, and estimated by him at the height of 360 feet. These two 



