Jan 31-1925 Saturday At 8 A.M. Stoyanow and R. Rebbu er at the Santa Rita Hotel ont a Dodge car and take me to the Balliera Mts. We start north around the western end of the Santa Catalina Mts and remain on the Phoenix road for 26 miles and go east to Oracle 11 miles. This is about 4000 feet or more above sea-level and then sort but down into a tributay that goes south into the Pila Rivera. The east road comes out a little south of Mammoth where there is a mine. Then north past Fenman and abandoned Fort Grant to Grindelman on the Pila River. It was 11 A.M. when we got here having come 75 miles. Had lunch and arranged to stay at the Van Althin Hotel and then we re- hatched one road 1 mile and then east for 4 1/2 miles on a ranch road. A walk of half a mile took us to another 1 1/2 miles of Chip Saddle Mt. and the exposures of the Pennsylvanian. The section is about 800 feet thick, and we began collecting near the top, and followed the ridge south for about one mile.