SECTION F. 



MINERALOGY AND CxEOLOGY. 



REPORTS OF MEETINGS. 



Wednesday evening, January 17, 1900. The President in the 

 chair. After business, the regular work in the determination 

 of minerals was done by the members under the direction of 

 Mr. George I. Hopkins. Stibnite, Antimony, Prochlorite, and 

 Natrolite were analyzed. 



Tuesday evening, January 23. The Vice President in the 

 chair. Mr. Hopkins gave a short talk on the cleavage of min- 

 erals, after which the analysis of a specimen given out at the 

 previous meeting was read by one of the class. After this re- 

 port on Celestite, the class studied and analyzed Apatite. 



Tuesday evening, February 6. The President in the chair. 

 After the business, Mr. Hopkins took charge of the work. The 

 analyses of Siderite and Sphalerite were read. Calcite and Talc 

 were studied in the class. 



Wednesday evening, February 14. The Vice President in 

 the chair. After business, Mr. Hopkins called for the analysis 

 of minerals given out for home study: Dolorite and Pyrrhotite.. 

 Gypsum was then studied. 



Wednesday evening, March 14. The analysis of Corundum, 

 Chalcocite and Chalcopyrite were read, after which the class 

 studied Magnetite and Orthoclase. 



Wednesday evening, April 1 1 . Mr. Hopkins addressed the 

 class on the spring field work. The report on Garnet was read. 

 Staurolite was studied. 



Wednesday evening, April 25. Vice President in the chair. 



