thinner and lighter in color. When crushed it will not pop like 

 the red or produce much moisture, and it is less regular in shape. 

 It is found on the fruit, the leaves, or more tender new growth, 

 scarcely ever on the wood, while the Red seldom settles on a leaf, 

 practically always on the branches and fruit. The Yellow is much 

 more easily affected by the gas than the Red, and there are other 

 differences revealed by the miscroscope which establish the fact 

 that the varieties are distinct, but which are of little practical value 

 to the grower. 



Many of both of these scales always find lodgment on the fruit 

 of infested trees, and as the Red especially is very difficult to wash 

 off completely, the sale of the fruit is greatly injured. A depression 

 seems often to form under a Red Scale which will remain after the 

 insect is removed, and the lemon, which seems more attractive to 

 them than the orange, is also more apt to be pitted. 



The Red Scale not only infests the citrus trees, but also the cam- 

 phor very badly, as well as the castor bean, the sterculia, many 

 varieties of the rose and the nightshade weed. These all serve to 

 propagate and spread it, though some are of so little value that we 

 are not much concerned about their infestation. The nightshade 

 weed should be fought and exterminated everywhere, and especially 

 about the orchards, and the castor bean should never be allowed 

 to become over one year old to breed this, one of the worst of the 

 scales. 



The Yellow Scale is of comparatively little consequence. 



On citrus trees, fumigation good and s trong, is the only efficient 

 remedy for Red Scale, and on other trees, repeated spraying with 

 kerosene or distillate emulsion or resin wash is probably the best 

 we can do, and if thoroughly done and repeated often, it will keep 

 the trees in very good shape., 



The Greedy Scale 



(Aspidiotus (rapax) camelliae) 



The Ivy Scale 



(Aspidiotus hederae) 



These two scales are in shape much like the Red and Yellow 

 Scales, but in color are a dirty gray, and are often mistaken by the 

 uninformed for a fly speck when they appear on a leaf. 



Like the Red and Yellow Scale, one of these scales, the Greedy, 

 usually infests the twigs and branches of the trees, the other the 

 leaves or very young and tender shoots. The Greedy Scale is also 



