Pal Alto, Wednesday, Feb 16. Studied all morning my notes for the lecture at 2 P.M. Then got one home of the or defenses they. It seemed to take very well. Then visited Prof. Blackweld's office and he showed me some fine samples: I saw brown sand and flinty granitic rocks, green on which he gartered them left on pebbles; another sample had his harder we stand up out. He showed me a picture of granite faulted over Pleiocene strata and are placed across to a general level. So pathing data done far back the present topography can be traced. It is more first back of the Andesire. Had dinner at Prof. Smith's home and met his wife and two sons. His daughter is in Europe. Then attended a lecture on the Milliken rays by the physicist William Brown.