Guoqiang Tang, Visiting Scientist, Chalmers University of 

 Technology, Sweden. "Study of Millisecond Pulsars in 

 High-Precision Astronomy," with James Moran, from De- 

 cember 1, 1990 to March 31, 1991. 



Jathindas Tharamel, ITAMP Predoctoral Fellow, University of 

 New Hampshire. "Theoretical Physics," with A. Dalgarno, 

 from Septembet 1, 1991 to August 31, 1992. 



Richard H. Tipping, Visiting Scientist, University of Ala- 

 bama. "Theoretical Problems in Molecular Spectroscopy," 

 with A. Dalgarno, from September 1, 1991 to January 31, 

 1992. 



Han Uitenbroeck, Visiting Student, University of Utrect, 

 Netherlands. "Computer Modeling Calculations of Spectral 

 Line Formation in the Solar Atmosphere," with Eugene 

 Avrett, from June 1, 1991 to May 31, 1992. 



Terry Whitaker, Visiting Student, University of Arizona. "Air 

 Shower Array and Data Analysis for Gamma Ray Sources," 

 with Trevor Weekes, from June 1, 1991 to May 31, 1992. 



Zheng Xing-Wu, Visiting Scientist, Nanjing University. 

 "VLA and VLBI observational programs," with James 

 Moran, from July 1, 1991 to December 31, 1991. 



Janusz Zielmski, Visiting Scientist, Polish Academy of Sci- 

 ences, Poland. "Comparison of Mapping methods, Sarellite- 

 to-Satellite Doppler Tracking Technique and Gradiometer," 

 with Enrico Lorenzini, from Septembet 1, 1991 to Novem- 

 ber 30, 1991. 



Hanne Rasmussen, Senior Postdoctoral Fellow, University of 

 Copenhagen, Denmark. "Importance of Mycorrhiza for 

 Growth and Reproductive Success of Terrestrial Orchids 

 with Different Life-History Strategies," with Dennis 

 Whigham, from September 1, 1991 to August 31, 1992. 



L David Smith, Postdoctoral Fellow, University of Maryland, 

 College Park. "Sexual Selection and Mating System of the 

 Blue Crab, Callinecta sapidm Rathbun," with Anson Hines, 

 from February 1, 1991 to December 31, 1991. 



Nancy Staub, Postdoctoral Fellow, University of California, 

 Berkeley. "The Relationship Between Sexual Dimorphism 

 and Steroid Levels in the Salamander genus Aneides," with 

 James Lynch, from April I, 1991 to August 31, 1991. 



Guy Thompson, Postdoctoral Fellow, Cambridge University. 

 "The Indirect Effects of Cd on Salt Marsh Plant Patho- 

 gens, Herbivores, and Decomposers," with Bert Drake, 

 from July 1, 1991 to June 30, 1992. 



Zhigang Wang, Postdoctoral Fellow, University of Cam- 

 bridge, England. "Population Ecology of Epifagus virgini- 

 ana," with Dennis Whigham, from October 1, 1990 to 

 Septembet 30, 199L 



Jaques R. White, Postdoctoral Fellow, University of Mary- 

 land, Cambridge. "Seasonal Variability in Trophic Level Ex- 

 ploitation by Estuarine Zooplankton," with D. Wayne 

 Coats, from July 1, 1991 to July i, 1992. 



Smithsonian Environmental 

 Research Center 



Martin L. Cipollini, Postdoctoral Fellow, Rutgers University. 

 "Costs of Reproduction, Resource Allocation, and Selective 

 Abortion in Lindera benzoin," with Dennis Whigham and 

 James Lynch, from May 1, 1991 to April 30, 1992. 



John R. Dolan, Postdoctoral Fellow, University of Maryland, 

 College Park. "Carbon Flux in the Rhode Rivet Estuary: 

 the Relationship between Metazoan Zooplankton and the 

 Microbial Loop," with Charles Gallegos, from August 1, 

 1991 to July 31, 1992. 



Richard Everett, Postdoctoral Fellow, University of California, 

 Berkeley. "Project 1: An Experimental Study of the Effect of 

 the Introduced Bivalve Rangia cuneata on the Structure 

 and Dynamics of an Infaunal Community," with Gregory 

 Ruiz, from September I, 1991 to August 31, 1992. 



Daniel Niven, Predoctoral Fellow, University of Illinois. "The 

 Role of Neighbors in the Habitat Selection of a Neotropi- 

 cal Avian Migrant," with James F. Lynch, from May 1, 1991 

 to April 30, 1992. 



Kevin Peters, Visiting Student, University of Maryland. "An 

 Analysis of Prey-Patch Choices of the Cucumber Rock 

 Crab, Cancer irroratui," with Anson Hines, from July 1, 1991 

 to May 31, 1992. 



Smithsonian Institution Archives 



Mark V Barrow, Jr., Graduate Student Fellow, Harvard Uni- 

 versity. "The Social, Institutional, and Intellectual History 

 of North American Ornithology, 1880 to 1930," with Wil- 

 liam A. Deiss, from June 4, 1991 to August 9, 1991. 



Daniel Goldstein, Postdoctoral Fellow, University of Iowa. 

 "The Place of Midwestern Academies of Sciences in the 

 Natural Scientific Communiry, 1850-1900," with Pamela 

 Henson, from January 4, 1990 to September 30, 1990. 



Smithsonian Tropical Research Institute 



Gregory H. Adler, Postdoctoral Fellow, Boston University. 

 "Perturbation Analysis of Tropical Rodent Populations," 

 with S. Joseph Wright, from October 1, 1990 to March 31, 

 1992. 



Patricia Backwell, Postdoctoral Fellow, University of 

 Wirwatersrand, Johannesburg, South Africa. "Aspects of 

 Male Spacing and Calling Persistence in Some Neotropical 

 Anurans," with A.S. Rand, from April 1, 1991 to April 30, 

 1992. 



48 



