384 APPENDIX. No. IV. 



shells commonly found in all parts of the world where 

 the carboniferous deposits are at all developed. The 

 line of junction of these deposits with the Silurians on 

 which they, rest is N.E, to E.N.E. (true). Like the 

 former they occur in low flat beds, sometimes rising 

 into cliffs, but never reaching the elevation attained 

 by the Silurian rocks in Lancaster Sound. 



The following lists contain the principal fossils and 

 specimens presented to the Eoyal Dublin Society by 

 Captain M'Clintock and by Captain Sir Eobert 

 M'Clure. 



Coal, sandstone, clay ironstone, and brown hematite, were found 

 along a line stretching E.N.E. from Baring Island, through the 

 south of Melville Island, Byam Martin's Island, and the whole of 

 Bathuist Island. Carboniferous limestone, with characteristic 

 fossils, was found along the north coast of Bathurst Island, and at 

 Hillock Point, Melville Island. 



I have marked on the map the coal-beds of the Parry 

 Islands, which appear to be prolonged into Baring 

 Island, as observed by Captain M'Clure. The discovery 

 of coal in these islands is due to Parry, but the evidence 

 of the extent and quantity in which it may be found 

 was obtained during the expeditions of Austin and 

 Belcher. In addition to the localities surveyed by him- 

 self, Captain M'Clintock has given me specimens of the 

 coal found at other places by other explorers ; and it is 

 from a comparison of all these specimens that I have 

 ventured to lay down the outcrop of the coal-beds, which 

 agrees remarkably well with the boundary of the forma- 

 tions laid down from totally different data. 



No. I. HILLOCK POINT, Melville Island (Lat, 76° N. ; Long. 



111° 45' W.). 

 Productus sulcatus. Joum. E. D. S., Vol. I. PI. VII. Figs. 1, 2, 3, 4, 7. 

 Spirifer Ardicus. Joum. E. D. S., Vol. I. PI. IX. 



No. II. BATHUEST ISLAND, North Coast, Cape Lady Franklm (?) 

 (Lat. 76° 40' N. ; Long. 98° 45' W.). 

 Spirifer Areticua. Journ. K. D. S., Vol. I. PI. IX. Fig. 1. 

 Lithostrotion hasalUforme, 



