412 DESCRIPTION OF THE COUNTRY BORDERING 



the lake is approached, in descending, a very decomposable hornblendic rock abuts 

 against the more compact rock, and, dipping to the southeast at an angle of from 

 3° to 5°, disappears as the portage is reached. 



West of the house, some good exposures occur, and near the west end of the lake 

 are several high mural escarpments, on the American side, resembling those seen on 

 Lac du Coq. 



The seventh portage is one thousand and thirty-five paces long, and leads to 

 Lower Lily Lake. It passes over a ridge, showing altered clay slates on the south- 

 east side, and hornblendic-looking rock at the termination of the portage. The 

 hill is sloping and densely wooded. On the American side of the lake are some 

 high mural precipices, like those already described. 



The eighth portage is two hundred and thirty paces long, and terminates at Upper 

 Lily Lake. On this, as well as the preceding portage, numerous large boulders of 

 granitic rocks were seen. 



The lower rock at Upper Lily Lake is an altered argillaceous slate (No. 32), 

 which rises to the height of eighty-nine feet above the lake-level. Above this, No. 

 33 occurs in thick beds, the rock becoming gradually more and more coarse and 

 crystalline, until it graduates into the top rock of the ridge (No. 34). There is, 

 however, a well-marked line of demarcation between Nos. 33 and 34, sixty-three 

 feet above the top of the clay slates. No. 34 recedes from the main escarpment in 

 thick ledges, and reaches the height of three hundred and sixteen feet above the 

 water-level. It is exceedingly tough, and breaks with a concentric fracture. No. 



a. Argillaceous slaie. b. Greenstone, c. Porphyritie greenstone. 



33 weathers into mural precipices, and presents something of a columnar structure. 

 The slates dip east-southeast at an angle of from 5° to 8°. 



The ninth portage is three hundred paces long, over low ridges of greenstone 

 passing into syenite. It leads to Hill Lake. This lake is about seven and a half 

 miles long, and varies from a quarter to half a mile in width. It is a beautiful 

 sheet of water, and lies completely embosomed amid high rocky hills, some of which 

 slope down to the water's edge, while others present mural escarpments, between 

 two and three hundred feet in height. The margin is skirted by a dense forest at 

 every point. This lake lies between two trap ridges in its whole length, and con- 

 sequently its long diameter conforms to the general bearing of the range, which is 

 east and west. 



The tenth portage is six hundred and forty paces long, and leads to Watab Lake. 

 The rock exposed on it is a tough, compact greenstone, which appears to lie in 

 tabular masses. At the lower end, next Hill Lake, it is rather coarse and crystal- 

 line, and at the upper end, fine-grained and more compact. Along the American 



