to take any of the fragile. The fresh seem to be from another horizon since all are corals and abundantly a stromatopora of which I have several pieces. Later saw that these are the Thunder Bay Island and Phelps quarry beds. Oct. 3 Spent the day at a locality five miles up the Thunder Bay River from Alpena. The beds seen are not more than ten feet thick, five of which abound in brachiopods and menticuliporoid corals. Spirifer grandiform is the most abundant fossil. Typical D. mucroeta do- not occur here but a form of D. I found hammering with long and narrow S. mucroeta found at Thedford. It may be that these beds are to be correlated with the lowest zone at Thedford.