MUSEUM OF COMPARATIVE ZOOLOGY. 25 



guided field excursions. While this method of conducting field 

 work is better for advanced students of a decided geological 

 aptitude, it is doubtless true that many students who elect this 

 course do not obtain that knowledge of the subject which they 

 would have were they personally attended by an instructor in 

 the field. One student in Course 20c completed the mapping 

 of the felsites and basic flows south of North Attleboro, and a 

 paper embodying a considerable advance in our knowledge of 

 these subjects has been prepared for publication. 



The teaching collection has been enriched by gifts of rocks 

 from Tennessee by Mr. Chester W. Washburn ; of rocks from 

 the upper Mississippi valley by Mr. W. N. Johnstone, '09 ; of 

 rocks from Colorado by Mr. J. W. Eggleston ; of a copy of 

 Lepsius's Geological map of Germany, and several minor acces- 

 sions. During the April recess Professor Woodworth conducted 

 a party from Course 5 to the Yorktown section in Virginia. 



An additional storage case containing 98 trays was built and 

 placed in the hall. A reading desk composed of olivine basalt 

 in the form of a metate, or native Mexican corn mill, with its hand 

 roll, or metapile, was brought from Mexico by Professor Wood- 

 worth and installed in the Geological laboratory. An enlarged 

 photograph of Professor Shaler by Pach has been placed in the 

 Geological laboratory. Several instructors from other univer- 

 sities have during the year visited this laboratory and indicated 

 their intention of embodying certain features in laboratories about 

 to be constructed, as at Princeton, Columbus, Ohio, etc. 



Mr. Eggleston spent five days in September, 1906, in an exam- 

 ination of the syenite at Cuttingsville, Vt. 



Professor Woodworth continued his connection with the New 

 York State geological survey and has completed a map and report 

 on the pleistocene geology of the Schuylerville quadrangle, includ- 

 ing the major part of the battlefield of Saratoga. In July, 1907, 

 he took part in conducting members of Section E of the American 

 association for the advancement of science to various points of 

 interest between Covey Hill, Canada, and the Ausable Chasm. 



Professor Johnson reports that the summer of 1906 was spent 

 in conducting a geological excursion through portions of New 

 Mexico, Arizona, and Utah. After making an examination for 

 the Atchison, Topeka, and Santa Fe Railway Company of the 

 underground water resources along a portion of their line in 

 New Mexico, and studying the volcanic features of the Mount 



