376 



In the above list those found at Cow Head are placed in the column 

 C. H., and those which occur in Canada East (as well as Cow Head) 

 C. E. The seven species of graptolites, with Lingula Quebecensis, occur 

 only in the black slates ; all the others in the grey and white limestones. 

 The three species with an asterisk before them are found in the next 

 group of strata below. No one could compare the collections from Cow 

 Head with those of Point Levis and Phillipsburgh without some feeling of 

 astonishment, that in localities nearly a thousand miles distant from each 

 other, there should be such a perfect identity, not only in the fossils, but 

 also in the character of the rock. The specimens, if mixed together, 

 without their labels, could never be separated. Only a small collection 

 was made at Cow Head ; and there can scarcely be a doubt that further 

 examination will bring to light a greater number of species common to the 

 two countries. 



This fauna, although, upon the whole, specifically distinct from the one 

 next below, consists of the same types of trilobites, with the exception of 

 Bathyurus Cordai and B. conicus, which are Calciferous species, as is 

 also the brachiopod Camerella calcifera. There are two species, Amphion 

 Sol and Endymionia MeeJci, which are found in Division N, in Newfound- 

 land, and not at Cow Head ; but they occur in the limestones of Point 

 Levis, which are of the same age as those of Cow Head. There are thus 

 five common species, instead of three, as would appear by the above list. 



From Cow Head, Point Le>is, St. Antoine, Stanbridge, Bedford, and 

 Phillipsburgh we have in all 219 described species. Of these, the fifty-one 

 species of graptolites described by Prof. Hall, and also Lingula Quebec- 

 ensis, L. Irene , Obolella desiderata and /Shumardia granulosa have been 

 found only in the slates and thin-bedded limestones interstratified in the 

 slates. The other 162 species occur in the white and grey conglomerate 

 limestones. That the slates and these peculiar limestones belong to the 

 same . group, is proved by their occurring together in widely separated 

 localities ; although as yet we are unable to shew that any of the species 

 are common to both. At Cow Head Cr. Headi was found in a loose piece 

 of grey limestone ; but it is not quite certain that the specimen belongs to 

 the conglomerates. 



The evidence that the rocks at Cow Head in Newfoundland are of the 

 same age as those of the Levis formation in Canada East amounts to this 

 1, they are precisely the same in lithological characters, and 2, out of 

 the 34 species collected at Cow Head 23 are perfectly identical with those 

 collected at Point Ldvis, Bedford, Phillipsburgh, and other typical locali- 

 ties of the formation. There is, however, in Newfoundland an important 

 series of strata, consisting of all the Divisions from I to inclusive, hav- 

 ing a thickness of- 2061 feet, lying below the Levis formation and above 



