322 REPORT OF THE BOTANIST OF THE 
rium around the point of inoculation. Two were still living, but 
the bark and wood on both sides of the wax was discolored and 
one cane was partly broken off. The other three canes were 
dead from a point three inches below the wax to the tip and 
two of them were broken at the point of inoculation. This ex- 
periment was highly satisfactory, and, of itself, proves beyond 
doubt that the Coniothyrium is capable of killing raspberry 
canes. 
Experiment No. 9.— Date of inoculation, June 3, 1902. Five 
fruiting canes of red raspberry (variety, Cuthbert) were inocu- 
lated at a point 12 to 18 inches below the tip by first washing 
the cane with a 1-1000 corrosive sublimate solution, then boring 
clear through the cane with a sterilized awl, crowding a bit of 
fungus into the hole, applying a drop of distilled water and 
finally winding the cane with grafting wax in the customary 
manner. The culture used was 19 days old and originally 
isolated May 15, 1902; hence it was different from that used in 
any of the preceding experiments. Five check canes were 
treated in identically the same manner except for the omission 
of the fungus. 
On August 8, a little over two months after inoculation, all 
ten canes were cut and examined. The five inoculated canes 
were all dead from a point two to four inches below the wax to 
the tip of the cane. For a short distance on either side of the 
wax the dead bark was thickly covered with Coniothyriwm 
pycnidia in every case. Three of the canes were broken at the 
point of inoculation. 
At the same time the five checks were alive and green 
throughout, none broken and none showing discoloration of the 
bark or wood around the puncture. 
Experiment No. 10.— Date of inoculation, June 5, 1902. Five 
fruiting canes of black raspberry (variety, Bishop) inoculated 
10 to 12 inches below the tip by puncturing the cane with a 
sterilized awl, inserting a bit of fungus in the hole and winding 
the cane with grafting wax. The culture was 21 days old and 
of the same strain as that used in Experiment No. 9. Three 
checks were made. 
