DESCRIPTION OF PLATES. 



Plate I. Frontispiece. A 4-year-old Mission grapevine from the experimental vine- 

 yard at Bernalillo, N. Mex., badly diseased both above and below the surface 

 of the ground. The young offshoot is the result of an attempt on the part of the 

 vine to renew itself. 



Plate II. Fig. 1. — A 4-year-old Muscat of Alexandria grapevine from the experi- 

 mental vineyard at Bernalillo, N. Mex., badly diseased with confluent root galls. 

 Fig. 2. — Another Muscat of Alexandria grapevine from the same lot as that shown 

 in Figure 1 diseased with confluent root galls below and cane galls above. 



Plate III. Fig. 1. — Root galls on a badly diseased Flame Tokay grapevine from 

 the same vineyard as those shown in Plate II. (One-third natural size.) Fig. 2. — 

 A Muscat grapevine diseased with a globose gall, resulting from an inoculation. 



Plate IV. Fig. 1. — View of a portion of the experimental vineyard at Bernalillo, 

 N. Mex., before the diseased Mission vines were replaced with other varieties. 

 Fig. 2. — A view of a portion of the experimental vineyard at Barnalillo, N. Mex., 

 after it had been planted with resistant vines. 

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