189 August 28, 1918, Wednesday. Middle Arm. Lemire called us at 12.30 A.M., because there is a quiet moonlight night. At 1 A.M. we are off for O'Rourke's camp in Middle Arm. The track progressed well and there was little sea to buck up against. Consequently we made a quick run and got to our destination in 6 1/2 hours or at 7.30 A.M. Duncan and Evans will go aft to near the head of the Arm and study the supposed Lower Cambrian section that comes in above the Portergric while I will work for fossil on the north-western shore of the Arm opposite to O'Rourke's camp. Here the strata consist of thin bedded light gray sandstone, and impure limestone interbedded with dark blue or greenish to black shales. Every now and then (in reality there are many of them) a zone of intraformational li. congl from a few inches up to 5 feet thick occurs. In them the pebbles are as a rule flat, from 1/4 inch to 1 inch or once thicker and in length up to 3 feet. There are also small well rounded li. pebbles, all are subrounded to rounded. In many cases, the matrix of the pebbles are not fully consolidated when one's together, and all of the pebbles, one of the same materials one sees in the formation, viz that they have their three long axes. With them one does share pebbles. Many of the sandstone and limestone shows own-cracking that is not very decided. These strata are much folded and marked. Interbedded with the above are thin zones of dark shales usually flint-black and these in places also have intra congl. of li. In one place for over 10 inch, li. congl. in a thickness of 3-5