"After dinner drove to Heidelberg Dam about 4 1/2 miles N.E. of Spring Valley. The bluff at this point are about 125 feet high of a blueish-white color and thin bedded. Near the base and in loose material to field picked up two specimens of Syzyphia borealis while also picked up a small slab with several specimens on it come 15 feet above the water. I am of the impression that this shewy comes from a still higher level. On the top of bluff I picked up Receptaculites Obvius, Torephoma umbilicata and Myochronis major indicating that the entire bluff is of Salend limestone."