8 



and by Kussell.^ More recently Harding- has shown that the disease 

 produced b}' this organism occurs in ca))bage in various places in 

 Europe;^ and Hecke has demonstrated its occurrence in Kohlrabi in 

 southern Austria.^'' 



Pseudomonas 2>haseoli was described briefl}' and named bj' the writer 

 in 1897,^ after securing numerous infections with pure cultures. The 

 disease which it produces had been previously ascribed to bacteria by 

 Beach/ and by Halsted,^ as the result of a microscopic examination, 

 but the organism itself had not been described, nor had it been shown 

 by means of pure culture inoculations to what organism the bean dis- 

 ease was due. Quite recently the same or a very similar organism has 

 been described briefly by Delacroix, who obtained it from diseased 

 beans in fields near Paris." 



Pseudomonas steicarti was found in sweet corn and described in 1897 

 by Stewart," who. however, established its pathog-enic nature only 

 inferentially. It was named with some additional characterization by 

 the writer in 1898 from a culture furnished by Mr. Stewart for that 

 purpose.- Doubt still remains as to its pathogenic properties, and 

 must continue until the disease has been produced with pure culture 

 inoculations from this particular species and under conditions preclud- 

 ing its origination by any other organism. Of the existence of a dis- 

 ease of maize due to bacteria no one who has examined specimens from 

 Long- Island or elsewhere can have a moment's doubt. The question 

 as to what species causes it can be settled definitely only by successful 

 pure culture inoculations. 



The following pages were originally intended to form part of Bulle- 

 tin 26 of this Division, but the manuscript grew to such an extent 

 under ui}' hands, and came to include so many references to related 



'A Ijacterial disease of cabbage and allied plants. Proc. 11th, An. Conv. Amer. 

 Col. and Exp. Stations, \u 86. (Issued in March, 1898.) 



•^ Die schwarze Fiiulnis des Kohls und verwandter Pflanzen, eine in Europa weit 

 verbreitete bakterielle Pflanzenkrankheit. Centralbl. f. Bakt., 2 Abt., Bd. YI, 1900, 

 No. 10, pp. 305-3i:l 



^^Eine Bacteriosis des Kohlrabi. Zeits. f. das landw. Versuchswesen in Oester- 

 reich, 1901, and subsequent letters to the writer. Inoculating from a pure culture 

 furnished by Dr. Hecke, the writer has also recently produced the typical brown rot 

 in cabbage. 



^ Descrijition of Bacillus phaseoU n. sp. with some remarks on related species. 

 Proc. Am. Assoc, for Adv. of Sci. for 1897, pp. 288-290. 



* Blight of Lima Beans. N. Y. Ag. Exp. Station Bull. Xo. 4S, new series, Dec, 

 1892, Geneva, N. Y., p. 331. 



^A Bacterium of Phaseolus. Rept. of Bot. Dept. X. J. Exp. Station for 1892, pp. 

 283-285. 



"(1) La graisse, maladie bacterienne des Haricots. Comptes Rend us, T. 129, p. 

 656. (2) Aunales de I'lnstitut Agronomicpie, T. , p. . 



''A bacterial disease of sweet corn. Bull. 130, Geneva Exp. Station, X. Y. ; also 

 16th Ann. Rept. N. Y. Agr. Exp. Station for the year 1897, pp. 401-416. 



* Notes on Stewart's sweet-corn germ, Psoidoinomis .storarti n. sp. Proc. Am. Assoc, 

 for Adv. of Sci. for 1898, pp. 422-426. 



