16 ANNUAL REPORT OF THE 



Professor Raymond conducted the courses Palaeontology 1 , 

 20, Geology 14; and gave one lecture each week in Geology 5. 

 Geology 14 was given for the first time. 



Through the assistance of Messrs. Robert W. Sayles and Richard 

 M. Field, the Department was enabled to purchase a modern 

 microphotographic apparatus for use in stratigraphic geology. 

 Mr. Field also contributed toward the fitting up of the dark room. 



Having been granted an allotment from the Shaler Memorial 

 Fund for an investigation of the stratigraphy of the Ordovician 

 strata of the Appalachians, Professor Raymond spent two months 

 in the field in Pennsylvania and Virginia. Numerous sections 

 were studied and much information obtained as to the faunas and 

 geographic extent of various formations. In this work, Mr. 

 Richard M. Field of Brown University, Dr. E. W. Shuler of 

 Southern Methodist University, and Prof. S. L. Powell of Roanoke 

 College, cooperated. 



Geology 10, conducted chiefly by Professor Graton, included 

 also lectures on iron ores by Professor Smyth and lectures on 

 gold and silver by Professor W. Lindgren of the Massachusetts 

 Institute of Technology. In reciprocation, Prof essor Graton gave 

 a course on ore deposits at the Institute during the second half 

 year. These arrangements illustrate the progress being made 

 in the highly desirable cooperation between the Harvard and 

 Technology Departments of Geology. Geology 18 of former 

 years was divided into two half courses, Geology 18a being given 

 by Professors Palache and Wolff and Geology 186 by Professor 

 Graton, with lectures on coal by Professor Jeffrey of the Depart- 

 ment of Botany and on petroleum by Mr. W. F. Jones of the Insti- 

 tute of Technology. Under direction from Professor Graton, 

 two graduate students devoted the entire summer to field-work. 



As heretofore, the principal subjects of research in Economic 

 Geology are among those related to the study of secondary enrich- 

 ment of copper ores. A thesis entitled "Occurrence and signi- 

 ficance of bornite" by Dr. D. H. McLaughlin, accepted for the 

 doctorate, will be published as a number of separate articles, one 

 of which has already appeared. Mr. J. P. Connolly began an 

 investigation on ore occurrence in limestones and Mr. D. A. Hall 

 continued his study of the ore deposits at Butte, Montana. 



Through the interest and generosity of alumni, there was made 

 available for the work in Economic Geology during the year 

 the sum of $3,000. which has been devoted to the improvement 

 and increase of equipment and facilities for instruction. A similar 



