G15 
Remedies——In winter, three applications at frequent intervals, 
if necessary, using Nos. 6, 10, 14, or 20 (see pp. 527-530); or the 
hydrocyanic gas treatment, No. 18. A spray of mustard water, llb. 
to 20 gallons of water, is reported to kill the San Jose scale in the 
foliage season. 
Natural Enemies.—In California this scale is now held in com- 
plete subjection by a small chaleid fly (:phelinus fuscipennis). 
At hortienItural conventions held in that State twenty odd years ago, 
Orange leaf infested with Red Scale (4 spidiotus aurantti). 
the question of dealing with the San Jose scale was one of their 
most serious problems, but now it is seldom if ever referred to at 
such conventions. : 
