New Yorx AaricutturaL Exprertment Srartion. 463 
ing, to a depth of two or three inches, where the cocoons are spun 
in which the transformation to the pupa stage slowly takes place. 
_ The transformation is not completed until the following spring. 
There is but one brood annually. 
T'reatment.— If the leaves become spotted as above indicated, 
they should be examined, and if indications of the eggs or larvee 
are found they should be sprayed with hellebore, one ounce to the 
gallon of water, as soon as the young larvee are numerous. Both 
the upper and under surfaces of the leaves should be covered. 
Where only a few bushes are infested the insect may be easily 
checked by brushing the larve onto the ground about the bushes. 
If the ground is soft and loose most of the larve will be unable to 
return. 
STRAWBERRY DISEASES. 
LEAF-SPOT. 
(Sphaerella fragariae (Tul.) Sace.) 
This disease is also called strawberry “ rust” or “ leaf-blight.” 
It frequently causes much damage by injuring the foliage so that 
the plants are incapable of perfecting a full crop of fruit, even 
though a full crop has set, or as Thaxter states, it also attacks the 
fruit stems and hulls, “ cutting off the supply of nourishment from 
the berries and disfiguring them by the withering of the calyx.” 
When the spots first appear on the leaves they are of a deep 
purple color, but later they enlarge and the center becomes gray 
or nearly white. Portions of the infested leaves frequently assume 
bright red tints, and when badly diseased finally wither and die. 
Treatment.— Bordeaux mixture, 1-to-11 formula, used as advo- 
cated by Hunn in the Annual Report of this Station for 1892, p. 
682, gives beneficial results. When setting a new plantation be 
particular to remove the diseased leaves before taking the plants 
to the field, or if the plants must be trimmed in the field, the di- 
seased leaves should not be left where they can communicate the 
disease to the new foliage as it grows out. The following treat- 
ment is then suggested : 
