122 CALIFORNIA STATE COMMISSION OP HORTICULTURE. 



Henry Comstock; ''Economic Entomology," by John B. Smith; "The 

 Insect Book," by L. 0. Howard; "The Moth Book" and " The Butterfly 

 Book," by W. J. Holland, and "Entomology, with Special Reference to 

 its Biological and Economic Aspects," by Justus Watson Folsom. 



Very many other excellent works on entomology might be recom- 

 mended, but the above or any of them will be found valuable to the 

 student of this science. In addition to these are the many excellent 

 publications issued from time to time by the Federal Government, which 

 can be secured by the student upon application. 



