382 



Notes and Ne-ws. [^ 



in historic times. Migrations. Accidental changes of place. Appear- 

 ance of rare species in certain districts. 



III. Biology — Habits — Diet — Nesting. Oology. 



IV. Economic ornithology — protection of species useful to agricul- 

 ture; destruction of harmful species, hunting. Acclimatation. Avi- 

 culture. 



V. Organization and working of the international ornithological com- 

 mittee. Election of new members. (This section is especially reserved 

 for members of the permanent international committee.) 



Papers on the subjects of the program which have been accepted by 

 the committee will be discussed in general session. Questions outside 

 the program may be submitted to the respective sections. All papers 

 must be in the hands of the organizing committee, at least in the sum- 

 mary form containing the conclusions reached, before the 1st of May, 

 1900. Communications may be made in English, German, and Italian, 

 as well as French; but the publications of the congress will be limited to 

 the French language. Minutes of each meeting will be printed and dis- 

 tributed at once. After the close of the congress a volume of proceed- 

 ings containing the papers presented to the congress will be published 

 under the direction of the committee. Correspondence relating to the 

 ornithological congress should be addressed to the secretary of the organ- 

 izing committee, M. Jean de Claybrooke, 5 rue de Sontay, Paris. 



Erratum. — In 'The Auk' for January the change of a single letter in 

 the eighth line from the top of page 78 exactly reverses the meaning of 

 the sentence: " the true Swifts, Macropterygidte," should of course read 

 Tree Swifts. — F. A. Lucas. 



