100 



with gas tar, and which cost about fifty cents per tree. I also 

 tried a few trees with gutters laid on the ground and filled with 

 tar, which I found answered the same purpose. The cost was 

 about fifteen cents per tree. 



Last fall (1871,) I put these troughs around four hundred 

 trees, at a cost of about twelve cents per tree. The foliage of 

 these trees was entirely eaten in 1870. The tar was stirred 

 two or three times in the fall and the same in the spring. Care 

 must be taken to prevent the grubs from bridging over, or the 

 gutter becoming filled with leaves. 1 found this to be a sure 

 thing, if properly attended to. 



This year the trees have not been eaten to injure the fruit. 

 The foliage of the same trees was entirely destroyed in 1870. 

 I shall have from two to three hundred barrels of good apples 

 this year, 1872. If any one is interested in my method, I 

 should be happy to give them any information I can, and the 

 trees speak for themselves. 



Thomas Sawyer. 



Boxford, Oct. 1, 1872. 



1776. International Exhibition, Philadelphia. 1876. 



OFFICE OF THE UNITED STATES CENTENNIAL COMiUSSION. 



Philadelphia, Pa., October, 1872. 



Essex County Agricultural Society, 



Chas. P. Preston, Sec'y, Danvers, Essex Co., Mass. 



The Anniversary of the Independence of the United States 

 in the year 1876, is to be celebrated by an exhibition of the 

 products, arts, and industries of the country, and of the world. 

 This is in accordance with an Act of Congress approved March 

 3d, 1871. By this act the task of preparing and superintend- 

 ing the exhibition was imposed upon the United States 

 Centennial Commission, consisting of two members from each 

 of the states and territories. The Commissioners have twice 

 met in general session, a permanent organization has been 



