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[1915] Sweel Potato Culture tor the Southern Planter . . . 103 p., 
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(26) Oroth, B. H. A. 
1911. The Sweet Potato. 104 p., 54 pi. New York. (Contrib. Bot. 
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(27) Hardin, M. B. 
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(29) Higgins, J. E. 
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8th Ann. Rpt., 1889, p. 298-336. 
(31) 1891. Report of acting horticulturist. In X. Y. State Agr. Exp. Sta. 
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