ILLUSTRATl N S 



Page. 

 Plate I. A Mission grapevine badly diseased with crown-gall, showing an old 



dead cane and a young live one from the root Frontispiece. 



II. Fig. 1. — A Muscat of Alexandria grapevine diseased with confluent 

 root galls. Fig. 2. — A Muscat of Alexandria grapevine diseased 

 with confluent galls on both the cane and root 36 



III. Fig. 1. — A Flame Tokay grapevine diseased with globose root galls. 



Fig. 2. — A globose root gall on a Muscat of Alexandria grape 

 seedling 36 



IV. Fig. 1. — A portion of the experimental vineyard at Bernalillo, 



N. Mex., showing diseased Mission grapevines. Fig. 2. — A portion 

 of the experimental vineyard at Bernalillo, N. Mex., after it had 

 been planted with resistant grapevines 36 



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