49 



laborious task of editing the manuscript of this report and seeing it 

 through the press. Mr. Eidgway, both as representing the Smithsonian 

 Institution, and personally, has aided in settling disputed points of iden- 

 tification and distribution ; and Mr. Allen and Dr. Ooues have assisted 

 in the same manner. Nor should the able efforts of Prof. D.E. Lantz, of 

 Manhattan, Kans., be forgotten. Not only did he furnish, for two years, 

 a very full and acceptable set of notes on migration, but when the sick- 

 ness of the author threatened to prevent the completion of this report, 

 Professor Lantz came to his assistance, and, although already burdened 

 by his own private work, found time to write nearly one-eighth of the 

 systematic portion of this report. Last, but not least, should the au- 

 thor endeavor to acknowledge his indebtedness to Mr. Otto Widmann, 

 of Saint Louis, Mo. When the work was begun and its future seemed 

 clouded in doubt, his voluminous and valuable notes turned the scale 5 

 later, when delays and discouragements came, his advice and encour- 

 agement awoke renewed vigor and interest. Not only does the material 

 contributed by Mr. Widmann form the most valuable part of the present 

 report, but during its preparation his aid has been so constant that it 

 is perhaps not too much to say that his name should be included as 

 joint author. 



Thanks are due, also, to the IT. S. Signal Service for kindly furnishing 

 weather reports and maps. 

 7365— Bull. 2—4 



