96 REPORT OF THE No. 3 



At Trout Creek original forest begins again and continues to the end of the 

 work. 



Along this section the timber is similar in size and quality to that obtaining 

 between stations and 83, with a greater predominance of jack pine along the 

 high ridges, and extending in some places along the rocky country to the river 

 banks. 



Good timber does not extend inland for any distance except along the streams 

 and deep ravines in which permanent creeks occur. 



Rock Formations 



The first outcrop of rock in place occurs at station 16 and consists of a very 

 fragile limestone, which is bedded horizontally and forms a bluff along the 

 shore line about thirty feet high. 



Many of the shallow rapids between the mouth of the river and the first 

 portage are caused by ridges of this limestone. 



It occurs at intervals along the river to the first portage, noticeably at 

 stations 28-32, where it lays unconformably upon an outcrop of granite, gneiss 

 and pegmatite, also at station 103, and along a rapid section of river near the 

 mouth of Trout Creek. 



From the first portage southwards no further outcrop of this limestone 

 was observed. 



Throughout the eight or ten-mile stretch of canyon rock, occurs almost 

 continuously and consists of granite, gneiss, with dykes of pegmatite and diabase. 



With the exception of certain diabase dykes, occurring at station 133 and 

 forming the rim of the main waterfall at this point, Keewatin rocks do not 

 occur within the section surveyed. 



Small dykes of trap and lamprophyre were observed at intervals among the 

 granites and gneisses which persisted from the first portage to the end of the 

 work at station 204. 



Soil 



Along the river between its mouth and the first portage clay banks pre- 

 dominate. 



Owing to the presence of the fragile limestones throughout this section 

 the clays are very calcareous and in many places form a marl. 



At other places where the banks are steep and rise to nearly one hundred 

 feet the clays are partly consolidated into a shale. 



As a general rule the banks of the river are steep and the only flats observed 

 occur at points where the river takes a somewhat extended turn, and as is usually 

 the case the low land obtains on the side of the river remote from the current. 



From the first portage southwards to the end of the survey the country is 

 hilly and very little soil of material value can be found. 



General 



As the section of this river within the limits of the survey has not been 

 used as a canoe route there is very little evidence to be observed of the activities 

 of man. 



No improvements are shown along the route and with the exception of 

 two small cabins, one at the mouth of Fisher Creek, station 160, and the second 



