258 re:ports on investigations and projects. 



GEOLOGY. 



Chamberlin, T. C, University of Chicago, Chicago, Illinois. Grant No. 

 769, allotted December 15, 1911. Study of fundamental problems of 

 geology. (For previous reports see Year Books Nos. 2-10.) $4,000 



At the end of the period upon which report was made in the last Year 

 Book study was being made of certain special questions tributary to an in- 

 quiry into the agencies that maintain the secular equilibrium of the atmos- 

 phere. The work on these was continued until satisfactory results were 

 reached in the more essential cases ; in some cases inherent limitations were 

 disclosed that rendered further pursuit inadvisable. 



While the general line of research of which this is a part has had for its 

 leading purpose additional light on the fundamental problems of geology, it 

 has also had as an ulterior purpose the application of its results to specific 

 problems. The more fundamental phases of the inquiry are thought to have 

 reached a stage at which an attempt at application to concrete problems may 

 prudently be made. The special problems of geologic climatology perhaps 

 have first claim, as the initial cosmogonic inquiry sprang from them. In 

 pursuance of this thought, the work of the latter portion of the year has 

 been given to assembling and organizing the climatological data of the geologic 

 record for the purpose of defining as sharply as may be the precise nature of 

 the climatic problems involved. This has been done as a step toward the 

 treatment of these problems in accordance with the fundamental conclusions 

 reached in previous inquiries. Good progress has been made in this work. 



HISTORY. 



Bandelier, Adolf F., New York, N. Y. Grant No. 734, allotted October 19, 

 191 1. Completion of a documentary history of the Rio Grande Pueblo 

 Indians of New Mexico. $2,000 



A documentary history of the Rio Grande Pueblo Indians of New Mexico 

 is inseparable from that of the Spanish colonists and must include everything 

 connected with the history of New Mexico in general. Since New Mexico 

 first became known to Europeans nearly every century constitutes an approxi- 

 mately distinct period. Documents concerning the eighteenth and nineteenth 

 centuries are quite numerous at Mexico, but not so with what relates to the 

 sixteenth and seventeenth. As the first two volumes of my proposed work 

 will embrace the time up to 1680 only, I directed attention especially to the 

 times between 1536 and the former date, without neglecting any important 

 or interesting source up to the year 1800. 



Material from the sixteenth century is scarce in Mexico. I have searched 

 in vain, at Guadalajara and elsewhere, for the official chronicle of Coronado's 

 expedition by Caspar Perez de Sotomayor, which existed at the close of the 



