Feb 9 - 1924, Saturday. Tucson. At 8 A.M. I am at the University and join Sturman with about 15 of his students to go in a speed truck to Picacho de la Calera when Jones or Jan. 16. First examined the supposedly Pennsylvania li., and after hunting for fossils for two hours failed to see a single diagnostic good one, saw Productus seminetieulatus, and a large Spirifer that maybe S. Ceneratus. The fossils are all very poor as pseu- domorphs. Some of the li., an entire Crinoid. Saw a thickness of several hundred feet. Then went to the bottom of the section just beneath the Cambrian quartzite that termin- ated in about 75 foot of a fine conglomerate carrying pieces of Jasper like the one in Pepper-sauce Canyon. It rests on the Pinal schist, a very ancient rolling material that is cut by Granite.