Introduction xix 



should go there to help him with a book, but that was 

 not to be. After his death, in April, 1906, Mrs. 

 Dupree and Col. T. F. Boyd, President of the Louis- 

 iana State University, with the approval of Professor 

 Morgan, who had assisted Dr. Dupree for a couple 

 of years and to whom the bringing out of the notes 

 properly belonged, did me the honour to place these 

 notes in my hands, to be incorporated in my volume. 

 Wherever possible I have reproduced the observa- 

 tions as he wrote them, otherwise only a resume is 

 given of the results of long series of experiments, 

 which furnish us with many hitherto unknown facts. 

 All the drawings made for him are not shown here 

 for lack of room, but most were copied by me for the 

 forthcoming Carnegie monograph on the subject, 

 when dissecting and drawing larval mouth parts for 

 that work. 



In a letter to me, written after Dr. Dupree's death, 

 Colonel Boyd said, alluding to the Doctor's service 

 to science: "Dr. Dupree did the work of several 

 men — was a tireless worker, and a man of far greater 

 worth and ability than he ever received credit for." 

 I agree with him, and think it fitting that a word 

 should here be said of the Doctor and his work. 

 But though I can briefly sketch his life, and set forth 

 a few of his many labours, no words of mine can ade- 

 quately convey the strength and sweetness of that 

 character which commanded the respect and love of 

 all who knew the man himself. 



Dr. James William Dupree was born June 4, 1842, 

 at Jackson, Louisiana, being a descendant of an old 

 Huguenot family. His classical education was ob- 



