Apr. 19,1924 
Canker Susceptibility of Citrus Species and Hybrids 237 
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Poncirus trifoliate. d On Citrus grandis. f On Citropsis schweinfurthii. h On clemelo. i On Busk citrange. 
Severinia buxifolia. • On Citrus aurantifolia. » On Citrus limonia. * On Savage citrange. * On Citrus nobilis deliciosa. 
