10 D I) 



Hudson's strait and bay. 



Ungava Bay. 



\ 



enormous basin formed by the chain of mountains of Davis' Strait, the 

 plateau of Xugnmit, Kinguait, Sikosuilat, Southampton Islands and 

 Melville Peninsula," 



In my report of last year, it was stated that fragments of grey, drab 

 aud yellowish-fossiliferous limestone, apparently Silurian, were common 

 near Cape (,'hudleigh. If the supposition be correct that the glacia- 

 tion of Ungava Bay was from the southward out into Hudson's Sti-ait, 

 and thence round Cape Chudleigh into the bed of the ocean, these 

 fragments would indicate that the limestones from which they are 

 derived exist somewhere in the bay, either under the water or on 

 Akpatok Island, which is described as low and level. 



Having failed to enter Ashe's Inlet on the inward voyage, we crossed 

 «tupart'» Bay. the straits to Stupart's Bay, in Prince of Wales' Sound. Our visit 

 to this station was too brief to allow me to make any fresh geological 

 explorations in the neighborhood. The geology and scenery of this 

 locality are described Sn my report of last year. The accompanying 

 engraving, from a photograph, repiesents a view of the country from 

 Eskimo Inlet, about two miles south of Stuparts' Bay, looking west- 

 ward, and it ma}' be taken as a characteristic specimen of the scenery 

 on the south side of Hudson's Straits, I found that Mr. Stupart and 

 his associates had collected numerous geological specimens for me. 

 They consisted of gneiss, soapstone, quartz, felspar, hornblende, mica- 

 rock, epidote and iron pyrites, all apparently derived from ordinary 

 Laurentian rocks, which prevail everywhere in this region. 



While at Port de Boucherville, on the south end of Nottingham 

 Island, some farther exploration was made in the vicinity, but nothing 

 worthy of remark, was observed. 



Last year Mansfield L'^^d was found to consist of flat-lying, grey 

 limestones. The fossils then collected, on its eastern side, although 

 badly preserved and not numerous, indicate the age of our Niagara 

 formation. 



Similar limestones prevail on Southampton Island (proper) from 

 Cape Southampton to within twenty-five or thirty miles of Cape Pem- 

 broke at its north-eastern extremity, the latter interval being occupied, 

 accoi"ding to Captain William Hawes, of the Hudson's Bay Company, 

 by rugged, dark-looking rocks, like those of Hudson's Sti-ait, which are 

 Laurentian gneiss. The large island north of Southampton Island, of 

 which Seahorse Point forms the eastern extremity, and which Lieu- 

 cenant Gordon has called Bell's Island, in the absence of any other name, 

 is mountainous and appears to consist of gneiss. 



In the end of August, while the "Alert" was lying in Port Lapier- 

 riere, at Lieut, Gordon's request, and with the assistance of Mr, James 

 Tyrell, P,L.S., 1 made a track-survey of the Outer Ligges Island. It 



Niagara 

 fonnation. 



Southampton 

 Island. 



Qneiss. 



'Track-survey 

 ■of Outer 

 Digges. 



