Saturday Jan 22. San Diego Read all day the various U.S.G.S. Folios of California. &t consideration clarified knowledge and especially about a land in Nevada during Paleogic time. Lindpen appears to have originated this idea and it is followed by Turner, Ransome and Heilger. On looking the matter up in any maps found that I had most of it but not as it should be. In the present I am holding that the Base was Complex of the Coast Ranges is rather Pre- Paleogic than Paleogic. Even if Paleogic it will not cause much change in my maps. The amount of volcanics in the Paleogic formations of N.Cal. is extraordinary. What it can mean depending on geogry is not plain. For is also much of it in the Older Mesozoic. Was glad to learn of a time of orogeny at the line of the Paleogic that lasted longer than Triassic time. The movement appears to have been in Cascadia, i.e. N-E. Cal. and Central Oregon and so on N.W.