New York AGRICULTURAL EXPERIMENT STATION. 155 
line of treatment was established. Among several precautions to 
be observed the most important are: (1) To secure healthy plants 
with which to start the plantation; (2) to remove the old canes im- 
mediately after the fruit is gathered. Spraying the plants with 
bordeaux mixture proved wholly ineffective. 
Studies have also been made on raspberry yellows, a disease which 
is believed to be chiefly responsible for the socalled running out of 
the Marlboro red raspberry in the Hudson Valley.1% It is char- 
acterized by stunted growth, mottled yellowish-green foliage and 
dry, insipid fruit. Neither the cause nor a remedy was found. The 
inefficiency of bordeaux mixture for the disease is shown by the fact 
that plants sprayed thirteen times were quite as much affected as 
unsprayed plants. Various combinations of commercial fertilizers 
were applied to the soil in a badly affected plantation without any 
appreciable effect on the disease. 
SNAPDRAGON. 
The cultivated snapdragon (Antirrhinum majus L.)_ suffers 
severely from a fungus disease, called anthracnose, in which the 
stems and leaves are covered with elliptical or circular sunken spots. 
This disease and its treatment were made the subject of a special 
investigation. The fungus was found to be new to science. It 
was fully described and figured and given the name Colletotrichum 
antirrhim. This fungus enjoys the distinction of being one of the 
two new species described in the Station publications during a 
period of twenty-five years. 
For a time it was believed that Colletotrichum antirrhini attacks 
only the snapdragon, but later it was found to infest also yellow 
toad-flax, a common weed belonging to.the same family!” 
A complete remedy for the snapdragon anthracnose was discov- 
ered. “In an experiment made on Long Island, plants sprayed once 
-a week with bordeaux mixture remained entirely free from the 
disease while unsprayed plants under parallel conditions were com- 
pletely ruined by it.” | 
In connection with the investigation of anthracnose some studies 
were made on another disease—a stem rot.%® This attacks succu- 
! Bil.2263362~362. 
*® Bul. 179:105-109 (1900) ; same in Rpt. .19:61-66. 
7 Bul. 200:87-89 (1901); same in Rpt. 20:148. 
Billo he? LO. 
