stone called Coarse light coloured quartzite sandstone in E.

Souris Census.

Sections in Porcupine Creek &c. last autumn showed quartzite drift almost distinct from all other. Have seen none such this season, but some in which fragments from all sources mixed, & with local drift.

I could find no fossils in these beds, of which 60 or 70 feet must be visible in places. Below these some dark clay & shale beds which have a very uniform appearance from top to bottom, & go down to the level of the water in the creek. They must represent the sombre clays seen E. of this. No part of section resembles exactly the shale banks seen in the brook 7 m. E. of here which have so close a resemblance to Long R. Shale. However I think the whole must belong to one series, unless indeed the shales resembling those of Long R. belong to a lower part of section than any exposed here.

The sombre clays in this valley like those at the Astronomical Station hold layers of impure ironstone. The nodules are however much bigger being often 12 or 15 feet in length. Septarian & holding Ammonites & Bacculites, some of the former about 2 feet across & belonging apparently to the Clypeiform group. They cannot be preserved entire on account of the numerous cracks which intersect them. The shell still remains & preserves in all its beauty the nacreous lustre & play of colours.

The nodules are so large that where the clays are washing away on the gentler slopes they remain as hummocks of broken & sheltered brown stone, giving a peculiar appearance.

(The nodular part of the section is chiefly confined to a layer about 2/3rds up the series, from the river edge.)

(The large size & Septarian character of the concretions seems to favour the idea that these beds represent Hector's Septarian clays.