Ll-Trr.R OF TRANSMITTAL 



U. 8. DkI'AUTMKNT ok AcRirULTI'KK. 



Division or KNToMOLijcv, 

 \V,is],;u(ifn„, I). ('.. M<n/ 2.i, 1901,. 



Siu: I have tho honor to trjinsmit hercwitli nianuscript of a cata- 

 logiio of the exhibit of insect enemies of forests and forest products 

 of the Louisiana Purchase Exposition held at St. Louis, Mo., during 

 the present year. It has t)eeii prepannl under my direction ))y Dr. 

 A. D. Hopkins, in charjic of Fon^st Insect Investigations, in the hope 

 of increasing the economic \ahie of the exhibit, and is practically a 

 continuation of the catalogur of the general exhil)it which has been 

 published as Bulletin 47 of the present series. The catulogue has 

 been divided into four section.s, as fullj' explained by its author. In 

 the })rc])aration of the exhibit Doctor Hopkins has had thi^ expert 

 assistance of l*rof. \V. E. Kumsey, of the West Virginia Experiment 

 Station, and, later, of Mr. W. F. Fiske, of this Division, who has 

 also assisted in the preparation of the catalogue. J recommend its 

 publication as Bulletin No. 4>^ of this Division. 

 Respectfully, 



L. O. Howard. 



KntoinohKjiiit. 

 Hon. Jamks Wilson, 



iSccrttary of Agriculture. 



3 



