EDITOR'S PREFACE. 



BY a resolve of the Massachusetts Legislature, of 1859, chap. 

 93, I was- directed to issue a new edition of Dr. Harris's 

 admirable Eeport on Insects Injurious to Vegetation, with suitable 

 additions and illustrations. 



Arrangements were made to begin the work without delay, but 

 it was found necessary to obtain extensive collections of insects in 

 order to have fresh specimens for use in making the drawings. 

 This required much time and labor, and, even with the utmost 

 diligence, it was found impossible to secure all that were needed 

 during the spring and summer of 1859. 



It has been thought best to insert the additions contemplated in 

 the resolve, in the form of foot-notes. No alterations have been 

 made in the author's language, and the additional notes are en- 

 closed in brackets to distinguish them from those in the former 

 editions. Large additions to the text, however, have been made 

 from the author's own manuscripts. These will be found exclu- 

 sively in the chapter upon the butterflies. In giving a somewhat 

 wider significance to the title, I have but carried out the plan 

 adopted by the author in his last revision of the work. 



Professor Louis Agassiz very kindly offered to supervise the 

 drawings, comparing them with the original specimens before en- 

 graving. It is believed that very great scientific accuracy has 

 thus been secured in the illustrations. Special acknowledgments 

 are due to Professor Agassiz for this valuable service, and also for 

 assistance rendered by way of suggestion and advice throughout. 



Acknowledgments are also due to the following gentlemen, who 

 have contributed notes on the subjects named : — Dr. John L. 



