Monday Jan 30-1928 Bought of the U.S. Coast and Geodetic Survey three maps of the Gulf of Mexico and Bahama areas. A few days later bought another of the entire Antillean or West Indies region published by the Hydrographic Office of the Navy. On the latter began to draw con- tour lines around the soundings and after three days or so working was surprised with the results. Then began to write out what I thought must be the evolution of the Caribbean, Antillean Sea and the Gulf of Mexico. On the evening of Feb 14 I am about finished with the West Indies study, and now have a consistent explanation of the entire area. When I get back to Yale it will have to be finished by adding the gology and paleontology of the region. Thursday Feb 16 1928 Completed my Antillean researches, and the rest came home when I got home. Have now a sound foundation to take up the geological re- sults of others and to make the own upon them.