iv PREFACE. 



journals, to many dealers, who have been uniform in their 

 courtesy, and incidentally to Mr. Morris K. Jesup, whose mag- 

 nificent collection of woods at the New York Museum of Natural 

 History has been available to the writer as to others. These, 

 with other sources of information acknowledged by the writer, 

 and suggested to others, are suitably arranged in the following 

 list. Of the 1 5 5 illustrations, 138 are original, the drawings 

 having been prepared under the supervision of the writer from 

 actual specimens by Mr. Irving T. Worthly of Cornell Uni- 

 versity and several students of New York University, and the 

 photographs by Mr. John Hopfengartner, Jr., of Westchester, 

 New York City. Other illustrations are, so far as possible, 

 acknowledged in place. 



