SECTION OF VEGETABLE PATHOLOGY. 361 
of the aboveare in any way genetically related to the latter has never 
been demonstrated. 
(d) TREATMENT. 
As a means of preventing Anthracnose of the raspberry we suggest 
that the plants be trained and pruned in such manner that plenty of 
air and sunlight will at all tigaes be permitted to come in contact 
with the canes. By far the most vigorous plantations that have 
come under our observation were those in which the rows were 6 feet 
apart and the plants were 5 feet apart in the row. Cultivation was 
made both ways and by careful pruning the plants had been made 
to assume a close, compact form. 
In no case should the canes that have been killed by the fungus 
be permitted to remain in the field, as all the evidence at hand in- 
dicates that the disease first appears where such canes have been left 
standing. We have in mind a small raspberry plantation in which 
the disease was first noticed near the center of the field among the 
plants of the Souhegan variety. The plants in question had been 
neglected for two or three years, and as a result the canes were long 
and straggling and many of them were dead. As a further detri- 
ment to their growth the suckers had grown up so thickly about the 
lower partof the plants that they were completely choked. On these 
plants the disease first appeared, but soon spread to adjoining rows 
which had received better treatment. Upon an examination of the 
canes where the disease was first observed the old scars made by the 
fungus the previous year were found, showing that the disease had 
been present for several years but had escaped detection. 
Sulphate of iron has been used with success in combating the An- 
thracnose of the grape, and it is reasonable to suppose that, if used 
properly, it will prove an effective remedy against the very similar 
disease of the blackberry and raspberry. Prepare a solution by dis- 
solving 2 pounds sulphate of iron in 5 gallons of water, and, by 
any convenient method, apply to the shoots before the buds have 
started in the spring. Later, if there be any signs of the disease, the 
use of the Bordeaux mixture is recommended. 
8.—ANTHRACNOSE OF THE BEAN. 
Gloeosporium lindemuthianum. 
(Plate VI.) 
(a) GENERAL OBSERVATIONS. 
Wax or butter beans, those having yellow pods, are subject to the 
attacks of a fungus parasite producing a disease which may be 
named Anthracnose of the bean. It is sometimes called ‘‘rust,” but 
that term should be restricted to a disease resulting from another 
cause. 
The disease has been known to gardeners a long time, but its 
botanical nature has not been studied until quite lately. It was first 
named by Saccardo and Magnus, and has since been studied (1883) 
by Frank.* 
* An account of this disease, with a figure illustrating its character, by Prof. 
William Trelease, was published in the Cultivator and Country Gentleman, Oc- 
tober, 1885, 
