Jan., 1 910. AxxuAL Report of the Director. 349 



Three field trips in the interest of the Department of Botany 

 have been successfully made during the year. The herbarium staff 

 spent a week among the sandstone outcrops of the Starved Rock 

 region, not only to assure a representation of the plants of that inter- 

 esting locality in the herbarium, but to secure valuable exchange 

 material. This trip resulted in 183 specimens, and 11 sets of speci- 

 mens for exchange with other herbaria. Mr. R. A. Dixon, one of the 

 preparators of the department, made a like trip to Madison, Mont- 

 gomery, and Walther counties, Texas, securing 189 specimens for the 

 herbarium and 575 specimens for exchange. Mr. Huron Smith, 

 Dendrologist, made his field base this year in the mountains of West 

 Virginia and Northern Georgia where he collected 149 tree specimens, 

 no negatives of trees, 250 herbarium specimens of trees, 592 speci- 

 mens of various plants for the general herbarium, and 1,342 specimens 

 for exchange. Mr. B. E. Dahlgren made a trip to Jamaica in Febru- 

 ary and March to secure studies, and specimens of tropic fruits for 

 reproduction. From this expedition he returned 117 specimens, 

 molds, and mounts together with a long series of water-color studies 

 of living plants and fruits in situ. In his work on the island he was 

 generously accorded accommodations at the Hope Botanical Gardens 

 at Kingston and material assistance by the Director, Mr. H. H. 

 Cousins, Mr. William Harris, and other members of the staff. • 



In March a trip was made to the Bermuda Islands by the Curator 

 of Geology and full series obtained illustrative of the coral and aeolian 

 limestones, cave products, soils and erosion forms of these islands. 

 Of the latter forms, two large potholes nearly two feet in depth 

 collected were especially important in illustrating these peculiar 

 formations. Specimens of the fossil shells and corals of the islands 

 were obtained in large number and about 60 photographs made, illus- 

 trating various geographic features but more especially the variations 

 in elevation and subsidence of the islands. The Alaska- Yukon-Pa- 

 cific Exposition at Seattle was visited near its close by the Curator 

 and a considerable quantity of valuable material illustrative of the 

 ores and minerals of Alaska and the Pacific Northwest obtained from 

 exhibitors there. Among the material obtained was a number of pay 

 gravels from placer mines of Alaska, low grade gold ores of Alaska, 

 copper ores, including those of native copper, from the Copper River 

 district, tin and tungsten ores from Teller, Alaska, showing associa- 

 tions like those of the Cornwall region, specimens illustrating the 

 coals of Alaska, including anthracite and natural coke, sulphur and 

 antimony ores from Alaska, representative ores from the mines of 



