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parts of No. 4 are impregnated with salts—probably in the main 
and magnesi¢ sulphates—and are often also charged with sulphurett 
hydrogen. Springs of this class were specially noted in the Pembi: 
Mountain region, and where the disturbed beds of this division are up-_ 
) A” 
tae 
‘ 
turned at the Buttes. In the latter locality some springs were found fror 
which sulphuretted hydrogen was given off so freely, and so little mingled ee 
with other gases, that it might be ignited on the surface of the water. es) 
355. Prof. Hind, in 1858, recognised this division of the Cretaceous 
in several widely separated localities, and obtained fossils from it which ‘ae 
were examined by Prof. Meek, and aided in fixing the position of the 
beds. The most interesting sections described by Prof. Hind, are those on _ 7 
the Souris River, a short distance above its junction with the Assineboin, — a 
and about thirty miles north of the east end of Turtle Mountain, or near é 
the present western boundary of Manitoba, Several of the fossils ob- 
tained were specifically new. The following list is given: Anomia Fle-— 
mingi, Inoceranus Canadensis, Leda Hindi, Natica obliquata, Avellana con- 
cinna and Ammonites.* The two latter were obtained at the Two Creeks 
on the Assineboine, sixty miles west-north-west of the Souris River 
exposures. Both these localities are interesting, as lying at no great 
distance north of the Line, and opposite a part of it where no sections 
appear. The other localities for this division, mentioned by Prof. Hind, 
are: Big Cut Arm Creek, and Scissors Creek, on the Qu’ Appelle River ; 
also the South Saskatchewan near the Elbow, where Avicula linguiformis 
was found; also midway up the escarpment of the second prairie | 
steppe, at Riding Mountain. > 
356. Dr. Hector, in his report considers his group B., to represent 
No. 4. He describes it as consisting of ‘ Indurated olive-coloured shales, 
with bands and fissures filled with clay ironstone. This formation he | a 
first met with at Long River, the rocks of which are elsewhere described — e. M 
) in this report (§ 195) and are identical with those of the upper part 
: of the Pembina Mountain series, as developed on the Pembina River. 
Dr. Hector, a few days afterward, examined the exposures near Forked | 
Creek on the Assineboine, from which some of Prof. Hind’s fossils were 
obtained, and there found the rocks to be exactly similar. Leda Hindi 
ras also found, and in addition Ostrea lugubris, scales of ctenoid fishes, 
annelide tubes, and plant remains. Group B., is also supposed to occur 
south of the Qu’Appelle River, and on the North Saskatchewan for a con- 


* Deseribed and figured in Report Assineboin and Saskatchewan Exploring Expedition, Toronto, 1859; 
and Narrative of the Canadian Red River Exploring Expedition, London, 1860, 
