REPORT ON THE DEPARTMENT OF GEOLOGY 

 FOR THE YEAR 1900-1901. 



By George P. Merrill, 

 Head Curator. 



The year just passed has been a busy one and has been characterized 

 by several changes which, when considered in the aggregate, are of 

 veiy great importance, placing the department as a whole in a better 

 condition to care for its collections than ever before. 



ACCKSSION'S. 



The more important accessions of the year, including also some of 

 the material which was purchased for exhibition at the Pan-American 

 Exposition, were as follows: 



A beautiful nugget of native platinum weighing -t44 grams, from 

 the Nijni Tagilsk district, Russia, purchased of Mr. H. M. Lewis for 

 the Pan-American Exposition. 



A type series comprising 386 specimens of asphalt and associated 

 rocks, from various parts of the United States, collected by George 

 H. Eldridge and transmitted through the U. S. Geological Survey. 



A beautiful series of native silver and copper specimens from 

 Houghton County, Mich., purchased for the Pan-American Exposition. 



About 100 pounds of Georgia corundum in masses and crystals, 

 gift of the International Emery Company, of Chester, Massachusetts. 



Rocks and ores received from the United States Geological Survey, 

 including those of the Ten Mile District, and Silverton, Pikes Peak, 

 and Cripple Creek quadrangles of Colorado. 



A series of zinc ores and associated minerals from Joplin. Missouri, 

 collected by E. W. Crosby, and asphaltum and radiolarian earth from 

 the Barbados, from C. F. Howe. 



A series of iron, zinc, and other ores from various parts of Europe, 

 collected by Dr. Heinrich Ries. 



Large specimens of mohawkite and domeykite, with native silver 

 from the Wolverine copper mine, Houghton County, Michigan, gift of 

 Fred Smith. 



Three samples of beach gold from Cape Nome, Alaska, purchased. 



Six nuggets of platinum, weighing 26^ grams, from Trinity County, 

 California, the gift of the Welsbach Company, through \Y. E. Bar- 

 rows, president. 



NAT mis l!»OL -6 sl 



