10 PREFACE. 



to be well satisfied in regard to all the insect enemies 

 and diseases of the quince, and in reading whatever he 

 could find upon any part of the subject. Besides the 

 many points of interest in his own experience and obser- 

 vation, he takes great pleasure in acknowledging his in- 

 debtedness to the writings of Charles Downing, John 

 Lindley, J. J. Thomas, A. S. Fuller, S. W. Cole, W. 

 Sanders, P. B. Mead, and others in the department of 

 propagation and culture. In studying the insect ene- 

 mies of the quince, his own observations have been 

 greatly aided by the works of Harris, Packard, Riley, 

 and Saunders, on entomology. In observing the dis- 

 eases to which the quince is subject, substantial help 

 has been derived from Professor Arthur's researches on 

 the blight, and the North American Fungi of Professor 

 Ellis, who is unsurpassed in mycological research. 



In the hope that it may prove a serviceable help to all 

 who shall consult its pages, it is respectfully submitted 

 to the public by the author. 



