PREFACE TO THE SECOND EDITION. 



IN the preparation of the second edition of this work the 

 author has endeavored to make such corrections, and to em-\ 

 body such additional facts regarding the life history and 

 habits of the insects referred to, and the remedies suggested 

 therefor, as will bring it into accord with the present know^ 

 ledge of entomologists on these subjects. In this he has been 

 aided by kind suggestions from many friends. AcknoW" 

 ledgments are especially due to C. Y. Riley and L. O. 

 Howard of Washington, A. R. Grote of Bremen, Germany, 

 J. A. Lintner of Albany, N. Y., C. H. Fernald of Amherst, 

 Mass., Miss Mary Murtfeldt of Kirkwood, Mo., J. H. Corn- 

 stock of Ithaca, N. Y., and E. T. Cresson of Philadelphia. 

 The corrections and additions have been embodied in the 

 work without interfering much with its general arrangement. 



WILLIAM SAUNDERS. 



OTTAWA, Ontario, Canada. 



