a large proportion of the more useful contrivances are such as have been 

 designed and perfected in the -work of the Bureau or of the U. S. Ento- 

 mological Commission during the past four years, and chiefly by the aid 

 of Dr. W. S. Barnard, who has had charge of this part of my Avork. 



4. Bee-culture. 



This collection is designed to show all the more valuable methods and 

 contrivances now in use among advanced apiarians, and I am under obli- 

 gations to Prof. A. J. Cook, of the Michigan Agricultural College, for 

 his aid in getting the material together. 



5. Silk-culture. 



In this collection the aim has been to make the exhibit instructive, 

 rather than full in detail, for the reason that other parties, and especially 

 the Woman's Silk-culture Association of Philadelphia, propose a full ex- 

 hibit in the Woman's Department of the Exposition. 



The collection includes, in addition to the aforegoing, a number of 

 framed i^lates, both colored and plain, that have been prepared in the 

 work of the Bureau, and a number of my own enlarged colored diagrams 

 of some of the more important injurious insects, all of Avhich it has been 

 deemed unnecessary to catalogue. 



I have the honor to remain. 



Yours, respectfully, 



C. V. Riley, 



Entomologist. 

 Wm. Saunders, 



Representative of the Department of Agriculture, 



World's Ind. & Cotton Cent. Exp., New Orleans. 



