July 25, 1902.] 



SCIENCE. 



143 



of the Columbus folio, Ohio. He will be 

 assisted by Mr. E. R. Cumings. 



Dr. F. L. Ransome is at present en- 

 gaged in the preparation of his report on 

 the Globe, Arizona, mining district. Later 

 in the season he Avill carry on areal and 

 economic surveys for the preparation of 

 the Bisbee folio, Arizona, and for a report 

 on the Bisbee mining district. Dr. J. 

 Morgan Clements will be associated with 

 him in this work. 



Dr. Geo. Otis Smith will continue areal 

 surveys necessary for the preparation of 

 the Snoqualmie folio, Washington. On 

 the completion of his field season in the 

 Cascade Mountains he will survey the 

 Bluehill quadrangle, Maine. He will be 

 assisted by Mr. Frank C. Calkins. 



Dr. W. S. Tangier Smith will be asso- 

 ciated with Mr. E. 0. Ulrich during the 

 early part of the season in the study of 

 the lead, zinc and fluorspar deposits of 

 western Kentucky, and later will continue 

 his investigation of the lead and zinc de- 

 posits of the Joplin district. He will be 

 assisted by Dr. C. E. Siebenthal. 



Dr. A. C. Spencer will study the areal 

 and economic geologj^ of the Grand En- 

 campment mining district, Wyoming. He 

 will be assisted by Professor J. Volney 

 Lewis. 



Dr. T. W. Stanton will continue a gen- 

 eral supervision of the paleontologic work 

 of the survey, and will carry on field work 

 in cooperation with Mr. J. S. Diller in the 

 Klamath Mountains of California. 



Mr. Geo. W. Stose will continue in 

 charge of the editing of geologic maps and 

 will spend a short field season in the con- 

 tinuation of work on the Chambersburg 

 quadrangle, Pennsylvania. 



Mr. J. A. Taff will continue his areal 

 and economic surveys in Indian Territory. 

 He will be assisted by Professor S. W. 

 Beyer and Mr. J. W. Beede. 



Mr. E. 0. Ulrich will study the geology 

 of the western Kentuclsy mining district 

 in connection with Dr. Tangier Smith's 

 investigation of the mineral deposits. 

 Later in the season Mr. Ulrich will be 

 associated with Dr. Adams in Arkansas 

 and Mr. Taff in Indian Territory. 



Professor C. R. Van Hise will continue 

 the supervision of investigations on the 

 pre-Cambrian and metamorphic rocks of 

 the United States. He will visit various 

 parties in the field for the purpose of veri- 

 fying and coordinating work in his divi- 

 sion. He will be assisted by Mr. C. K. 

 Leith in the preparation of a final mono- 

 graph on the Lake Superior region, by 

 Dr. W. S. Bayley in the completion of 

 field work in the Menominee district, by 

 Dr. W. H. Hobbs in the continuation of 

 surveys in Connecticut and Rhode Island, 

 by Dr. Florence Basconi in the continua- 

 tion of areal and structural studies in the 

 Philadelphia district. 



Mr. T. Wayland Vaughan has recently 

 returned from field work in southern 

 Louisiana, Alabama, Georgia and Florida. 

 He will be engaged throughout the greater 

 part of the coming year in the preparation 

 of a monograph on the fossil corals of the 

 United States. 



Professor Lester F. Ward will continue' 

 the preparation of reports on the Mesozoic 

 floras of the United States. 



Mr. W. H. Weed will revisit Montana 

 for the purpose of securing additional in- 

 formation required for the completion of 

 his report on the Butte mining district. 



Mr. David AAHiite will continue his in- 

 vestigations on the paleobotany of the- 

 Carboniferous, working in cooperation 

 with various geologists in West Virginia, 

 Ohio, Pennsylvania and Indian Territory. 



Professor Henry S. Williams will con- 

 tinue his studies on the correlation prob- 

 lems of the Devonian in Pennsylvania,. 



