July 25, 1902.] 



SCIENCE. 



141 



Special Haustorial Apparatus in connec- 

 tion with the Embryo Sac of Angios- 

 perms: John M. Coulter, University of 

 Chicago. 



A Note on the Vitality of the Spores of 

 Marsilea: Marshall A. Howe, N. Y. 

 Botanical Garden, Bronx Park, New 

 York City. 



The Ascent of the Transpiration Stream: 

 Edwin Bingham Copeland, Stanford 

 University, California. 



Chemical Stimulation and the Evolution of 

 Carhon Dioxide: Edwin Bingham 

 Copeland, Stanford University, Cali- 

 fornia. 



Hermann von Schrenk, 



Secretary. 



ASSIGNMENTS OF GEOLOaW AND PALE- 

 ONTOLOGIG PARTIES. 



The following- assignments of geologic 

 and paleontologic parties of the U. S. Geo- 

 logical Survey have been made for the pres- 

 ent field season: 



Dr. Geo. I. Adams will make an areal 

 and economic survey of the Yellville quad- 

 rangle in Arkansas, with special reference 

 to the preparation of a report on the 

 Arkansas lead and zinc district. He will 

 be assisted by Professor A. H. Purdue and 

 Mr. Ernest F. Burchard. 



Dr. Geo. F. Becker will continue the 

 supervision of the Division of Physical 

 and Chemical Research and the prepara- 

 tion of a report embodying his investiga- 

 tions on the conditions of gold deposition 

 in the Mother Lode of California. 



Mr. J. M. Boutwell and Dr. J. D. 

 Irving will study the mining geology of 

 the Park City district, Utah. 



Dr. J. C. Branner will continue areal 

 surveys on the Santa Cruz quadrangle, 

 California. 



Mr. M. R. Campbell will continue the 

 supervision of areal and economic work 



in New York, Pennsylvania, Ohio, Indiana, 

 Kentucky, and West Virginia. He will 

 be assisted by Messrs. Charles Butts, Lester 

 H. Woolsey, Ralph W. Stone and Marcus 

 Goldman in Pennsylvania; by Mr. Myron 

 L. Fuller in New York and Indiana, and 

 by Professors Geo. H. Ashley and L. C. 

 Glenn in Kentucky. 



Professor T. C. Chamberlin will con- 

 tinue the supervision of investigations in 

 Pleistocene geology of the United States. 

 He will be assisted by Professor R. D. 

 Salisbury and Mr. W. W. Atwood in the 

 Rocky Mountain region; by Frank Lever- 

 ett and F. W. Taylor in Michigan, and by 

 W. C. Alden in Wisconsin. 



Professor W. B. Clark, with assistants, 

 will continue the investigations of the geol- 

 ogy of the Coastal Plain region in Maiy- 

 land and Delaware, and of the Piedmont 

 plateau of Maryland in cooperation with 

 the Geological Survey of Maryland. 



Dr. Whitman Cross will suspend his 

 regular field Avork in Colorado for the pres- 

 ent season and spend a portion of the year 

 in the Hawaiian Islands for the purpose 

 of investigating volcanic phenomena. 



Professor T. Nelson Dale will continue 

 1,1 is surveys in western Vermont and will 

 survey the Slatington quadrangle in east- 

 ern Pennsylvania.. He will be assisted by 

 Professor Frederick B. Peck and Mr. Fred 

 H. Moist. 



Dr. William H. Dall will continue his 

 studies for the completion of the revision 

 of the Tertiary faunas of Florida. 



Mr. N. H. Darton will continue areal 

 surveys in the Black Hills and the Big 

 Horn Mountains, and will complete a 

 reconnaissance of the Great Plains for the 

 preparation of a map showing the geology 

 and water resources of that region. He 

 will be assisted by Mr. C- A. Fisher. 



Mr. J. S. Diller will complete the areal 

 and economic survey of the Redding quad- 



