Fig. 1. — Part of a Concord vine sprayed with 5-5-50 Bordeaux Mixture, Mrs. Smith's vineyard, Paw 

 Paw, Michigan.— Photograplied Sept. 8, 1907 by Lon A. Hawkins. 



Fig. 2. — Vine from unsprayed 'and neglected vineyard in the same neighborhood. Photographed 

 the same day as Fig. 1. 'Crop entirely destroyed by blackrot and the vines defoliated. — Photo by 

 Lon A. Hawkins. 



PLATE II. 



