Plant Diseases 
341 
&c., and wherever one alights on a young leaf or fruit, 
and the conditions are favourable, it immediately germi- 
nates, forming a new centre of the disease. 
When this disease makes its appearance the beds 
should be gone over thoroughly, and all diseased fruit 
and badly diseased leaves removed and burned. This 
will prevent the summer stage of the disease spreading, 
and minimize damage to the crop. Every time any ripe 
fruit is picked, the others should be carefully looked over 
where the disease has made its appearance. This will 
prevent it spreading to the other fruit so rapidly. 
Towards the end of the season, ascospores are formed 
within asci; these spores are able to lie dormant during 
the winter, germinating in spring, and infecting the leaves 
with the disease again. If a young plantation of Straw- 
berries is attacked with this disease, the following spring 
the leaves should be dusted every week with lime and 
sulphur, 2 parts of the former to 1 of the latter. This 
will prevent the growth of the disease in the leaf, and 
prevent it attacking the fruit. 
If, however, the plantation has fruited tw T o or three 
seasons, the plants may be chopped off in dry weather 
after fruiting, and burned, a fresh plantation being made 
elsewhere with quite healthy plants. 
AMERICAN GOOSEBERRY MILDEW 
1 his is another disease which of late years has caused 
considerable damage in some districts. It is spreading 
only too rapidly, and is another instance of a fuller know- 
ledge of plant diseases being required by the ordinary 
