390 APPENDIX. No. TV. 



3rd. I do not believe in the lapse of a long interval 

 of time between tbe sUurian and carboniferous depo- 

 sits, — in fact, in a Devonian period. 



4tli. The same blending of corals has been found in 

 Ireland, the Bas Boulonnais, and ia Devonshire, where 

 Silurian and carboniferous forms are of common occur- 

 rence in the same localities. 



5th. In the carboniferous beds proper of Melville 

 Island and Bathurst Island, there were .not found, so 

 far as I am aware, any corals of the same character as 

 those at Griffith's Island, Comwallis Island, and Beechey 

 Island, which could give a supply to be drifted to the 

 latter locahties in a Pleistocene sea. It is plain, from 

 the height at which the corals were found, that, if they 

 Avere brought to their present localities by ice, it must 

 have been during the period known as Post-tertiary, 

 as the present conditions of drift-ice in Barrow's Straits 

 do not permit us to suppose them to have been placed 

 where we now find them by existing causes. 



The occurrence of coal-beds in such high latitudes 

 has been speculated on by many geologists — in my 

 opinion, not very satisfactorily ; as it is very difficidt 

 to conceive how, even if the question of temperature 

 were settled, plants even of the fern and lycopodium 

 type could exist during the darkness of the long winter's 

 night at Melville Island. This difficulty is increased 

 by the facts made known to us by the discovery of 

 ammonites and lias fossils in Priuce Patrick's Island by 

 Captain M'Clintock. 



rV. — Tlie Lias Rocks. 



Many years ago it was asserted by Lieutenant Anjou, 

 of the Russian naw, that ammonites had been found 

 by him in the cliffs on the south shore of the island of 

 New Siberia, off the north coast of Asia, in lat. 74° N. 

 This statement, which was published in Admiral Von 

 Wrangel's jom-nal, attracted but little attention, until 



