108 BOTANICAL GAZETTE [FEBRUARY 
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to confirm the earlier published statements of the writer? respect 
ing the manner of infection and the usual symptoms. A num 
ber of new facts which appear to have an important economit 
bearing were also brought to light. Some of these discoveries 
are as follows: (1) this disease is serious in many parts of the 
United States ; (2) the greater part of the infections take place 
through natural openings of the plant, z. ¢., through water ports 
located on the serratures of the leaves ; (3) the-disease is ire 
quently disseminated by insects ; (4) the wild mustard, Brass 
sinapistrum, is one of thecommon host plants ; (5) the diseases 
very frequently disseminated by man, 7. ¢., by making seed bets 
on infected soil and transplanting the germs in infected sett: 
lings to land previously free from it ; (6) when a soil has ont 
become infected there is reason to believe that the germs a 
capable of living in it for a series of years and will attack cab 
bages which are planted on it ; (7) the disease may be restricté? 
by planting seed beds on healthy soil; by transplanting, a * 
passed out of the water pore stage of infection, by removilg 
affected leaves. A full account of the economic aspe¢ ee 
disease has been published by the Department of Agriculture# 
the shape of a farmer’s bulletin, which may be had on appli 
tion. Cultures of the parasitic and dried leaves and stems ee 
bage showing the characteristic symptoms were passed aro 
5- Occurrence of Kramer's bacterial disease on sugar bets it 
United States: Dr. Erwin F. Situ, Department of Agrien 
— Attention was called to the existence in parts of Ce fi 
States (Michigan, Wisconsin, etc.) of a disease of sugat Ne 
much resembling if not identical with that described by M¥ 
and Sorauer in 1891-2, and more recently by Busse & 
* Science 5 : 963. 1897; Centralb. f. Bakt. 37: 284. 1897. 
3Zeitschr. f. Pflanzenkr. 7:65. 
