THE COTTONY-CUSHION SCALE. 45 



Kee23 your trees in vigorous health, avoid planting any 

 of the Citrus family either too deep in the soil, too close 

 together, or in water-logged situations, as trees and plants 

 of all kinds are, when unhealthy, more liable to be 

 attacked by insects of most kinds. The more vigorous 

 the growth of the plant the less will be the trouble of the 

 grower. 



