40 STUDIES OF THE CROWN-GALL OF THE GRAPE. 



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Vitis cordifolia, susceptibility to crown-gall 16 



labrusca, hybrids resistant to crown-gall, list 19, 20 



linsecomii, hybrids resistant to crown -gall, list 19 



occurrence of crown -gall 10 



susceptibility to crown-gall 16 



rupestris, resistance to crown-gall 10 



vinifera, susceptibility to crown-gall 10-15 



Von Schrenk, Hermann, investigations of crown-gall at Mississippi Valley 



Laboratory 8 



Winterkilling, cause of crown-gall, authorities 20 



Wounds, origin of root galls, notes 11, 13 



relation to crown-gall 24 



Zabalkanski grape, susceptibility to crown-gall, experiments 12 



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