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A BACTERIAL DISEASE OF THE SUGAR BEET: 
CLARA A. CUNNINGHAM. 
(WITH PLATES XVI-Xx) 
Ix the autumn of 1890 Professor H. A. Huston, chemist of 
the Indiana Experiment Station, noticed that the analyses of 
some sugar beets showed a much lower per cent. of sugar than 
others, and the difference seemed to be associated with a slight 
change from the usual appearance of the tissues of the root. This 
observation led to a microscopical examination of the affected 
beets by Dr. J. C. Arthur, who discovered the presence of bac- 
= in the tissues, to which, after further study, was attributed 
their abnormal condition, During the year 1891-2 the character- 
oi is the disease were studied by Dr. Arthur and Miss 
Katherine E. Golden, and the results published in the form of a 
bulletin in 1892.2 
: This preliminary series of investigations determined that the 
Rg Was associated with a specific germ, which could be 
‘ Polated from the diseased tissue. 
oe ee of the beet had been reported from any 
ork. rat 4 in America at the time of the publication of this 
of the bine most Kramer, in 1891, reported a bacterial disease 
simultaneou ag attacking the fodder beets of Russia, and almost 
of the ace 4 i Paul Sorauer, of Germany, reported a disease 
Uer gives “eg that country. In the Export of wee 
d By kis Ueda mnt the disease of the fodder ste 
SUgar beet es bacteriosis gummosis,” and that of = 
Read arly named by himself ‘‘bacteriose gummosIs, 
Fitton ag a for the Promotion of Agricultural Science at the Boston 
Fein no, — Of the sugar-beet root. Purdue University Agric. Exper. Station, Bul- 
7E 
1899) *port, 1894, no, 30. 
