74 REPORT OF NATIONAL, MUSEUM, 1923. 



and K. S. Williams, of the New York Botanical Garden ; Dr. A. W. 

 Evans, of Yale University; G. K. Merrill, of Kockland, Me.; and 

 H. N. Dixon of Northampton, England. Oakes Ames of Boston 

 has determined many specimens of orchids, and Kenneth K. Mac- 

 kenzie of New York City numerous specimens of the genus Garex. 



EESEARCHES ELSEWHERE AIDED BT MUSEDM MATERIAL. 



The cooperation with outside institutions and scientij&c investi- 

 gators alluded to in the introduction to this report is well exemplified 

 in the following lists of students to whom this department has sent 

 out material for research or who have come to Washington to examine 

 the collections of the National Museum, to which they have been 

 given full access, or to consult its officers who have spared no pains 

 in assisting in every possible way. A. B. Howell, of Pasadena, 

 Calif., spent the winter in Washington for the purpose of studying 

 the microtine rodents as well as the gold finches in the national col- 

 lection; the bird collections were studied by various ornithologists, 

 thus by A. C. Bent, Taunton, Mass., who examined skins and eggs of 

 North American geese and related birds in connection with his " Life 

 Histories " ; Dr. Frank M. Chapman, American Museum of Natural 

 History, New York, who during three visits studied South American 

 birds; Romeyn B. Hough, Lowville, N. Y., who examined specimens 

 of the genus Myaaestes; Harey Malleis, who before visiting Guate- 

 mala for the Biological Survey, spent many days studying the 

 birds of that country; James L. Peters, Museum of Comparative 

 Zoology, who spent about three days examining the series of ruffed 

 grouse; Dr. John C. Phillips, Wenham, Mass., who studied certain 

 ducks and geese in connection with his forthcoming monograph; 

 F. A. Potts, Central Aguirre, Porto Rico, who spent a day examining 

 various North American waders and other birds likely to occur in 

 Porto Rico ; Dr. R. W. Shufeldt, who examined certain material in 

 the osteological series. In addition the following were given the 

 privilege of examining the study collections in whole or in part: 

 Dr. T, G. Ahrens, Berlin, Germany; Bengt Berg, Stockholm, 

 Sweden ; Dr. Amos W. Butler, Indianapolis, Ind. ; Donald R. Dickey, 

 Pasadena, Calif.; Edward von S. Dingle, Summerton, S. C. ; Mrs. 

 Mena V. French, Wayland, Mass. ; Mrs. Edward C. Wynne, AVash- 

 ington, D. C. ; Prof. A. L. Herrera, director of the National Museum 

 of Mexico; Mrs. Nellie C. Knappen and Miss Marian J. Pellew, 

 Washington, D. C. ; Mr. and Mrs. H. A. Snow, of California, and 

 Dr. Clara Barrus of New York, Dr. Thomas Barbour, Museum of 

 Comparative Zoology, and Dr. E. R. Dunn, Smith College, paid 

 several visits to the Museum during the year examining reptiles and 

 amphibians. The division of fishes was visited by Dr. David Starr 

 Jordan while in Washington in February. 



