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PREFACE. 



The Editors have now the pleasure of presenting to 

 the Members of the B. O. U. the twenty-ninth volume 

 of ' The Ibis,' which in value and interest will, they 

 trust, be found not unworthy to take rank with its 

 predecessors. 



Although some of the older Members have discon- 

 tinued their ornithological work, others have taken 

 their places, and the Editors have found no lack of con- 

 tributions during the year. They are glad to say that 

 there is already in hand nearly sufficient MSS. for the 

 next Number, while other good papers are promised. 

 Amongst the latter the Editors hope to include a 

 general account by Mr. E,. S. Wray of his recent re- 

 searches on the Structure of the Bird's Wing, which 

 they consider to be one of the most important contri- 

 butions made to ornithological science during the 

 past year. 



P. L. S. 

 H. S. 



London, October 1st, 1887. 



