Sept. 10 - 1919 When these conglomerates formed, they must have been cliffs in the sea (?) fault faces exposing at least here Upper Cambrian and Laugan. I am not certain that the pebbles here at Leri have Lower Cambrian fossils if or then also those lls were exposed. In general it means that Lower Cambrian lls where followed by Upper Cambrian lls, and over the latter came the Laugan sand stone. Of silters and shales I saw no pieces in the conglomerates today. As I do not think the succession as made out today drills for run it again tomorrow. The limestone pebbles are too generally distributed throughout the Leri, or these if they are as of cliff origin, in places the floods are large and such may be at the base of cliffs within the magnific spaces the pebbles must have had another source.