72 The Ottawa Naturalist. 



beds are found to decrease greatly in thickness and as noted before 

 gradually thin out to less than one hundred feet north of the mouth of 

 the Saskatchewan. 



Farther to the south at Rosenfeld, the evidence of drilling gives a 

 thickness of limestone, undoubtedly the same series, of 305 feet,* thus 

 showing a slight tendency to increase in that direction. 



HUDSON RIVER REDS. 



Under the city of Winnipeg, red, impure limestones are reached in 

 drilling for wells. The surface of the underlying rock slopes very 

 abruptly to the east, the depths at which it is found varying from 60 feet 

 on the west, and undermost of the city, but increasing suddenly to 112 

 feet at the outer end of Point Douglas f This seems to be about the 

 extent of these soft beds to the east. They extend west, and are to be 

 found at Little Stony Mountain in an undisturbed state, capped by beds 

 of an ashy coloured dolomite. The thickness of this part of the forma- 

 tion is indefinite, but part of the section has been recorded by Prof. 

 Panton, from the exposure at Stony Mountain. Here the dolomite 

 seen at Little Stony Mountain, appears at the surface on the top of the 

 hill, dipping slightly to the southeast, showing a tilting up of the under- 

 lying beds, and a consequent break in the section between this place 

 and Stonewall. The section recoided amounts to i 10 feet. 



! " The following is n veriical section of the ruck, as observed during the digging 

 of a well at the southwest part, upon which the Provincial Penitentiary is located." 



i- 20 feet solid hard stone like that at the quarries 

 2 4 feet thin layers of the same. 

 ; 2 feet x>lid rock. 

 46 leet thin and broken. 

 58 feet yellowish rock, quite ochreous. 



6 --IO feet reddish layer, f^ill of fossil shells. 



7 60 feet, a mixture of yellow and red, containing some flinty material." 



between the top of the Stony Mountain beds, and those at Stone- 

 wall, where the rocks appear to be Niagara, there are no exposures, but 

 at the latter place the section in the quarry seems to be very similar in 



"Trans. Royal Scciety, Canada, Vol. IV. 1886. 



^Transactions No. 27, Manitoba Historical and Scientific Society, Winnipeg. 

 ! transactions No. 15, season 1S94-5, Manitoba Historical and Scientific Society, 

 Winnipeg. 



