MUSEUM OF COMPARATIVE ZOOLOGY. 23 



student examined the brick clays about Boston, and confirmed an 

 earlier unpublished conclusion of the instructor that they are older 

 than the last glacial deposits, including the drumlins, and that 

 they are likewise of glacial origin. Work was also done in Rhode 

 Island in tracing boulder moraines. The results of these investi- 

 gations will be embodied in forthcoming publications. 



A course equivalent to Geology 8 was given to two students of 

 Radcliffe College. 



Mr. Woodworth's time, when not employed in teaching, has 

 been given to the completion of a map and report upon the Car- 

 boniferous Rocks of the southeastern part of Massachusetts and 

 Rhode Island, in collaboration with and under the direction of 

 Professor Shaler, for the U. S. Geological Survey. 



The following papers are in preparation as the result of in- 

 vestigations carried on or brought to a close during the year : — < 



The Stratigraphic Succession in the Rhode Island Coal Area. 



On the Fracture System of Joints in Pelites. 



The Glacial Sand-Plains of Narragansett Bay. 



The Geology of Block Island. 



Geological Field-Work. 



During the past year research in general geology has been 

 carried on in two classes : Geology 22 a, comprising students just 

 entering upon research work in the University, and Geology 22 5, 

 including more experienced men. In 22 a the work was closely 

 supervised by Mr. Griswold, and the students individually were 

 given considerable time in field and laboratory by the instructor. 

 In the fall, work in the Boston Basin gave valuable results, and 

 one paper was published, " The Southwestern Part of the Boston 

 Basin," by Mr. J. L. Tilton, in the Proceedings of the Boston So- 

 ciety of Natural History. During the spring season a considerable 

 part of the Nashua Basin was studied, and interesting features 

 of structure and metamorphism determined. In Geology 22 b 

 the men followed work of their own choice with the advice of a 

 selected instructor. Mr. H. I. Richmond continued the work 

 of a previous year upon New England shore lines. Mr. C. F. 

 Marbut pursued work upon the geology of park of Missouri for 

 publication by the State Geological Survey. Mr. Marbut is now 

 Instructor in Geology at 'the Missouri State University, and is 



