July 10-1918 Pot au Park Wednesday. Expected to get up in a fine sunny morning, but instead it rains lightly. It may clear enough for us to get away. At 10.30 A.M. we go aboard our boat. On the shore the shore is pretty and this part not less than 100 feet where the bottom is blue mud and thickly covered with Amygdaloidites. We are anchored in 15 feet of water and see hundreds of the echini with a few fork spray algy. The bottom for the shore the distance is about 500 feet. Flatheads are common but we do not see them until they slowly move about the bottom on the river far in front of our launch. After two hours of going in the launch we camp at 1 P.M. For a small river. Another place safe for the boat. We are now about 10 miles from where we started to start in. It is misty and raining and nothing can be done today. On each side of the river there is an elevated beach 15 feet high that we tend to the southward for a mile or more. At 3 P.M. in the mist Duncan and I walked along the shore north of Ben-mint's Brook for about 4 miles. Coming the brook from the far one at once came upon a long exposure (1/2 miles) of a dural amygdaloidal basalt showing the prair pillar structure very clear. The contact somewhat up-stream of this basalt (the red area marked t on Sharples maps) is from interrupted with a small exposure of sandy shale. Then the trip continues upstream for about 1/2 miles. Every now and then there are included gives a few feet thick of the sediment and in one place there a gore of about 20 feet across of volcanic breccia, bare a piece of it. Of this breccia one sees many patches all along the exposure. The amygdaloidal structure is wonderfully developed and in places made up one-half of the rock.