REPORT OF NATIONAL MUSEUM^ 1920. 95 



Correspondents whose co-operation has resulted in adding to the 

 vahie of material in the diA'ision of plants are without exception 

 those to whom specimens haA^e been transmitted for critical study as 

 detailed further on. iVs a matter of fact, it is in most instances im- 

 possible to discriminate between the benefits accruing to the National 

 Museum by such researches and those derived by other institutions. 



BESEARCHES ELSEWHERE AIDED BY MUSEUM MATERIAL. 



The National Museum considers it not only a duty, but a privilege, 

 whenever it can be done without jeopardizing the safety of the collec- 

 tions or interfering seriously with important work already under- 

 taken, to lend its material to scientific investigators in this and other 

 countries. This liberal policy, Avhich in most instances is cordially 

 reciprocated, is abundantly taken advantage of, as the details beloAv 

 will show. The laboratories andstudy series are similarly open to all 

 research students who visit the capital for the purpose of examining 

 specimens or investigating means and methods, and the curators are 

 ahvays willing to assist to the extent of their ability. 



Tlie following list of visitors who have availed themselves of these 

 privileges testifies to the degree to which the opportunity is appre- 

 ciated. The bird and egg collections were examined by Harry B. 

 Bailey, Newport News, Virginia; Mr. Alfred M. Bailey, New Or- 

 leans, Louisiana; Dr. F. PI Blaauw, of Holland; Mr. James P. 

 Chapin, American Museum of Natural History, New York Citj-; 

 Mr. H. K. Coale and Mr. Colin C. Sanborn, of Highland Park, and 

 Chicago, Illinois; Dr. Jonathan Dwiglit, New York; Mr. H. I. 

 Hartshorn, New York; Prof. Tamiji Kawamura, Imperial Univer- 

 sity, Kyoto, Japan; Mr. Walter Koelz, Bureau of Fisheries, Wasli- 

 ington; Messrs. W. H. Osgood and Conover, of Chicago, Illinois; 

 Lieut. James L. Peters, Cambridge, Massachusetts; Dr. John C. 

 Phillips, AVenham, Massachusetts ; Capt. Ernest Samusson, LT. S. A. ; 

 Dr. L. C. Sanford, New Haven, Connecticut; Mr. W. L. Sclater, 

 London, England ; Mr. Charles Sheldon, Washington ; Mr. Harry S. 

 Swarth, Berkeley, California; Mr. W. E. Clyde Todd, Pittsburgh, 

 Penns3dvania ; Mr. Edward Arnold, Montreal, Canada; Mr. Wilson 

 C. Hanna, Colton, California; Mr. Nathan Moran, San Francisco, 

 California; Mr. G. P. Rossignol, SaA-annah, Georgia; Mr. John M, 

 Sommer, Baltimore, Maryland; Dr. R. W. Shufeldt, Washington 

 City. Reptiles and amphibians Avere examined by seA^eral of the 

 members of the American Society of Ichthyologists and Herpetolo- 

 gists during the annual meeting Avhich Avas held at the Museum in 

 May, among them INIiss Crystal Thompson, Curator of the INIuseum 

 of Amherst College. JNIiss Cora Peeves, SoocIioav, China, visited the 

 division of fislies for the purpose of identifj'ing colored drawings 



