554 APPENDIX. 



While the rocky and elevated ground about Lake 

 Beechey, which turns the river from its previous direc- 

 tion, may be a continuation of the mountainous tract 

 about Back's River, and on the east of Bathurst Inlet, 

 the general course of which seems to be from the south 

 of east towards the north of west. This also is the 

 direction of the range of hills, laid down during the first 

 of Franklin's journeys, near the Coppermine River, 

 about latitude 66° 32', longitude 115° to 116° W. * 

 The irregular ground between those hills and Heywood 

 range of Captain Back (latitude 64° 50', longitude 

 108°), includes the group of lakes about Point Lake; 

 between which and Contwoy-to, or Rum Lake, is the 

 division of the water-shed, which has the same general 

 direction with the ridge or height of land that divides 

 Sussex Lake from Lake Aylmer, and, possibly, may 

 be a continuation of it. 



As the existence of lines of division, like those just 

 mentioned, is one of the most prominent general cir- 

 cumstances hitherto ascertained respecting the geology 

 of this part of America, I have great pleasure in sub- 

 joining the following observations from a letter of Dr. 

 Richardson, by whom in person many of the points in 

 question have been examined. They will be perfectly 

 intelligible if the reader will place before him Arrow- 

 many of the ranges in the British Islands, and on the Con- 

 tinent of Europe. 



* In the last of the maps annexed to Franklin's first 

 journey, the direction ascribed to this range, Dr. Richard- 

 son informs me, is erroneous. It is there described as con- 

 sisting of " hills running in mountain ranges to the South 

 " (instead of North) West ; clay slate, with peaks of from 

 " 1,200 to 1,500 feet high." 



