
F i ea Plu. a 
New Yorxk AGRICULTURAL EXPERIMENT STATION. 549 
of pods, forty points on yield by weight, and seventy five points 
on condition of foliage; but for the entire season the difference 
was but nine points, seventeen points and eight points, respect- 
ively. The few diseased plants discovered umong this lot as 
the beans were coming up, were purposely left, and they have 
furnished an excellent object lesson on the importance of eradi- 
cating the disease in the beginning of the season. From these 
plants and from the plants in adjoiniag rows grown from Gis- 
eased seed, the anthracnose undoubtedly spread to the healiby 
plants and in a marked degree reduced their yield. 
TREATMENT BY sPRAYING-— This part of the subject has already 
been quite fully discussed, but only the Bordeaux formula there 
recommended has been given. The cupric borate formula used 
was as follows: Dissolve two pounds of copper sulphate in water, 
and separately dissolve in water two and two-tenths pounds of pow- 
dered borax; mix and dilute the whole to thirty ert finally add 
soap as for the Bordeaux mixture. 
The formula used for cupric polysulphide was as follows: Dis- 
solve in water two pounds copper sulphate and separately dissolve 
- in water two pounds potassium sulphide; mix the two and dilute to 
thirty gallons; add soap as before. | 
It will be noticed that these fungicides, as suggested by Mr. 
Fairchild, contain equal amounts of copper per gallon, and there- 
fore are strictly comparable as to the efficiency of equal amounts 
_ of copper in these particular forms. It was noticed after the first 
application that the cupric polysulphide had injured the foliage 
somewhat and that even greater injury resulted from the use of 
cupric borate. Therefore, in subsequent treatment all the form- 
_ ulas were reduced to thirty-seven and one-half gallons of water, 
instead of thirty gallons. The results do not indicate that it is 
advisable to use either the cupric polysulphide or the cupric borate 
_ mixture as a remedy for bean anthracnose. 
Bibliography. 
1. Sacoarpo anp Maanus.—Glceosporium Lindemuthianum,n. s, 
"Micheli I, p. 129, 1878. ‘The fungus was first observed by Linde- 
- muth at Popplesdorf in 1875 and is here named in honor of its 
