GEOLOGY. 319 



Other Lines of Work. 



The work of the year on problems of primitive earth-shaping has 

 followed in the main the lines previously reported. The work on cli- 

 matic states has been given chiefly to a more critical study of climatic 

 evidences recorded in the Paleozoic and Mesozoic formations of South 

 and Central Africa and the islands of the Indian Ocean. 



Vaughan, T. Wayland, U. S. Geological Survey, Washington, D. C. Study 

 of the stratigraphic geology and of the fossil corals and associated organisms 

 in several of the smaller West Indian Islands. (For previous reports see 

 Year Books Nos. 14 and 15.) 



It had been hoped to submit for publication by the Institution the 

 manuscripts for a volume which would comprise monographic accounts 

 of the fossil organisms I obtained in Antigua, St. Bartholomew, St. 

 Martin, and Anguilla, and of the available collections from Cuba; but 

 the w^ork has been interrupted by official assignments to other duties. 

 However, there has been considerable progress in the study of the 

 material. Dr. Joseph A. Cushman has completed a monograph of the 

 fossil foraminifera from the Leeward Islands and one on the fossil 

 foraminifera obtained in Santo Domingo by Miss C. J. Maury. In 

 connection with the preparation of a monograph on the fossil corals of 

 Central America, Cuba, and Porto Rico, I have worked over all the 

 material obtained in the Leeward Islands and have prepared prelimi- 

 nary lists of the species for incorporation in the monograph mentioned. 

 As a part of the memou' on the fossil corals from Central America, etc., 

 I have written a rather elaborate statement of the geologic history of 

 the Tertiary coral faunas of Central America, the West Indies, and the 

 southern United States; and following it is an account of the condi- 

 tions under which both the fossil and Recent coral reefs of the area 

 under consideration have formed. This memoir will be published in Bul- 

 letin 103, U. S. National Museum, as one of a set on the paleontology of the 

 Canal Zone and adjacent areas in Central America. Dr. R. T. Jackson 

 has made progress with his investigation of the fossil echinoids of the 

 West Indies. Mr. O. E. Meinzer, of the U. S. Geological Survey, has 

 placed in my hands a paper describing the geology and the fossil coral- 

 reefs in the vicinity of Guantdnamo, Cuba, and Mr. N. H. Darton, 

 also of the Survey, has delivered to me a manuscript describing the 

 geology of an area near Guantanamo, Cuba, but a little to the northeast 

 of the one considered by Mr. Meinzer. I intend to combine these two 

 papers with my manuscript on the physiography and the stratigraphy of 

 the island. Dr. Paul Bartsch has almost finished a paper on the hving 

 land mollusca of the Leeward Islands. These organisms furnish sig- 

 nificant information on former land connections between the islands. 

 Unless prevented by other duties, I hope within a few months to deliver 

 to the Institution those manuscripts now near completion. 



