PREFACE. Vll 



ductoiy sketch by Colonel Higginson ; never having had the 

 privilege of seeing Dr. Harris myself, these words renew the 

 vivid picture which I had gained in reading his works. At 

 Colonel Higginson's request I have revised my published list 

 of Dr. Harris's entomological papers, and have added the titles 

 of other papers, mainly collected by Mr. Edward Doubleday 

 Harris. The portrait, from a photograph furnished by the 

 family of Dr. Harris, was engraved by Mr. Halpin, under 

 their supervision. 



My thanks are due to the favor of many friends, who have 

 furnished me with manuscripts in their possession, permitted 

 me to publish letters addressed to them, or have rendered aid 

 in other ways. In particular I may mention Mrs. L. W. 

 Leonard, Miss Morris, Drs. LeBaron, LeConte and Pickering, 

 and the late Mr. Herrick. Dr. A. S. Packard and Mr. F. G. 

 Sanborn have also greatly assisted me. 



CAMBRIDGE, March 1, 1869. 



