LETTl-R OF TRANSMriTAL 



U. S. Department of Agriciti.ture, 



Bureau of Plant Industry, 



Office of the Chief, 

 Washington, I). C, DecemlerM, 1905. 



Sir: I have tho honor to tninsniit herewith the nianuseript for a 

 biinetin entitled "The Control of Apple Bitter-Kot,"' bv :Mr. W. M. 

 Scott. This paper was suhniitted l)y Mr. A. F. Woods, Pathologist 

 and Ph^'sioloo-ist of the Bureau, with a view to publication. 



This Bureau has for a number of 5'ears been investigatino- this serious 

 disease, which nearly evc^-y year causes great loss to apple growers. 

 The loss some years has been estimated to be more than $10,000,000. 

 Although many attempts have been made to control the disease by the 

 ordinary spraying methods, the results have been unsuccessful. Mr. 

 Scott has discovered the reason for these failures, and the results of 

 his investio-ations during the present season (which has been exceed- 

 ingly favorable for the development of bitter-rot) indicate that the 

 disease can be successfully controlled at a nominal cost. It now remains, 

 through demonstration experiments to be conducted in the various 

 apple districts, to bring the method into general use. 



I respectfully recommend that this paper l)e published as Bulletin 

 No. 93 of the series of this Bureau. 



The accompanying illustrations are essential to a clear understanding 



of the text. 



Respectfully, B. T. Gallow^ay, 



Ch lef of Bureau. 



Hon. James Wilson, 



Secretarij of Agriculture, 



