IMiEFACK. 



Ox completing the first volume of the Seventh Series 

 of 'TJie Ibis,' the Editors have a few remarks to offer 

 to the Members of the British Ornithologists' Union. 



It will ])(; observed, perhaps, that the present 

 volume is not quite so tliick as some of those which 

 liave immediately preceded it. This is owing to the 

 fact that it vvill shortly be necessary to pay, out of the 

 funds of the Union, for the General Index to the 

 Fourth, Fifth, and Sixth Series of this Journal, v/hich, 

 as was agreed at the last Annual General Meeting, is 

 now being proceeded with under the superintendence 

 of Mr. Salvin. Under these circumstances it was 

 thought by the Committee that it would be expedient 

 to effect a slight ec(momy in expenditure by reducing 

 the number of pages in the present volume ; and the 

 Editors have accordingly deferred until the next issue 

 several papers which might have formed part of the 

 present number. 



The Editors are pleased to have been able to publish 

 two important memoirs on Pterylosis in the present 



