EVOLUTION OF BIRD- SONG 



32 pages had then been returned to the printer; 

 but, in revising the remainder, I continually per- 

 ceived the great advantages derived from Mr. 

 Harting's perusal. 



However novel or otherwise may be the theories 

 stated in this book, I can at least claim that, so far 

 as I am concerned, they are absolutely original, all 

 of them having been committed to writing, though, 

 in some instances, not under their present titles, 

 before I consulted any person, or any book, in regard 

 to them. 



CHARLES A. WITCHELL. 



London, April 1896. 



