34 ' THE ROYAL SOCIETY OF CANADA 



clay, however, the discoloured portion and the white clay are mixed 

 without any banding. 



Mr. J. M. Bell found material on Wabiskagami river at a point 

 about eight miles above its junction with the Missinaibi, which he 

 describes as follows: "The deposit lies on the right or southern bank 

 of the stream, along which it is traceable for about 400 feet, rising 

 above the summer level to a height of at least about 10 feet. It is 

 overlain by a talus of soft boulder clay which in places entirely 

 obscures the underlying material. The kaolinic clay is soft, plastic, 

 and unctuous, generally almost white in colour, but sometimes stained 

 deep hematite red or yellow ochre by impregnation of iron oxide. 

 Much of it is remarkably free from sand, but other parts contain 

 lenses and small pocket-like areas, composed of grains of clear, glassy 

 quartz sand mixed with pure white kaolin." 



The deposit thus described by Mr. Bell lies about 2 miles west 

 of the large body of similar material on the east bank of the Missinaibi. 

 No other deposits of this character are known to occur on Missinaibi 

 river or its tributaries. No lignite was seen in connection with the 

 clays and sands at either of the above localities. 



The most extensive outcrops of Cretaceous beds known on 

 Mattagami river occurs on the eastern bank, about a quarter of a mile 

 below the north end of Long Portage. At this point the bright 

 coloured Cretaceous clays outcrop at intervals from beneath the 

 river wash, along the strip of sloping bank between high and low water 

 levels, the greatest vertical height to which the clays rise being about 

 8 feet. Above this level banks of glacial clay rise to a height of 75 

 feet. 



A number of holes were bored with an auger by the writer at 

 various places along the strip of clay outcrops in order to ascertain 

 the thickness of the clays and the variation of the beds. None of the 

 holes went down very deep owing to the fact that in every case a bed 

 of white or pale yellowish sand was encountered which invariably 

 let water into the hole and put an end to boring operations. 



The following three examples summarize the results of the 

 borings : 



(1) Bright red and grey mottled clay 2'-0" 



Yellow and grey mottled clay 2'-0" 



Black clay 3'-0" 



White clay I'-O" 



Sand I'-O'' 



Water bearing sand I'-O" 



