604 Letters, Extracts, and Notes. [Ibis, 1922. 



American Ornithologists' Union, and Dr. John C. Phillips 

 of Wenliam, Mass. The last-named is preparing a new 

 work on the Ducks of the World, and spent some days in 

 the Natural History Museum examining the collections. 

 Dr. Dwight is specially iriterested in the plumage develop- 

 ment of the Gulls, and has also devoted some time to the 

 Museum collections. A third visitor is Mr. T. Gilbert 

 Pearson, the President of the National Association of the 

 Audubon Societies, who has been enquiring into bird- 

 conservation in Europe, and who has addressed both the 

 B. O. Club and the Royal Society for the Protection of 

 Birds on this question. From Australia we welcome 

 Mr. E, AsHBY and Mr. C. L. E. Orton, both members of 

 the Royal Australian Ornithologists' Union. 



