228 
‘brown (Plate VIII., figs. 1-3). The growth of the mycelium 
appears to be confined to the one season so that it does no 
advance from the dead shoot further inte the tree the following 
ear, 
: The mycelium is chiefly found in the cortex of the shoots and 
the hyphae are stout and freely branched, penetrating the tissues 
fupedhy in all directions. They, do not appear to exert the 
same destructive action upon the cell walls as was noted in the 
fruit, but the cells are killed and collapse. 
At different levels in the cortex loose aggregations of hyphae 
Control Measures.—It is evident that the fungus is carried 
over the winter in the mummified ‘‘ fruits’? and dead shoots ; 
tion of these two sources of infection. Careful attention to this 
is all that appears to be necessary ; for badly diseased trees which 
ave been so treated have entirely recovered and now _ bear 
healthy and full crops 
Plate VIII.—Fig. 1. Shoot inoculated at X and killed by the 
fungus which has progressed down the shoot to Y. The figs 
fungal attack, 
Figure about one-third natural size. ; 
Tn all these cases the conidia used for inoculation were derived 
from pure cultures of the fungus from diseased ‘‘ fruits. 
Plate IX.—The “fruits” were inoculated when almost fully 
grown and five days after each other, i.e., figure 4 on June 5th, 
and figure 1 on June 20th. On June 25th they were gathered 
