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CALIFORNIA FRUITS: HOW TO GROW THEM 



Root injury by Phylloxera and forms of insect. 



A healthy root; b, root on which the lice are working, representing the knots and 

 swellings caused by their punctures; c, root deserted by lice and beginning to decay; 

 d, d, d, show how the lice appear on the larger roots; e, the nymph; g, winged 

 female. After Riley. 



The Greedy Scale (Aspidiotus rapax). This species affects many 

 kinds of trees, deciduous as well as evergreens. Scale, about one- 

 sixteenth of an inch in length; form, ovoid; color, drab; female, 

 bright yellow. This insect is found in many places along the coast. 

 It is distinguishable easily from the Aspidiotus perniciosus by -its 

 whitish-yellow color, contrasting with the dark color of the latter. 

 Generally this scale has only one brood in the season, and, as com- 

 pared with the San Jose scale, it is of little danger, owing to its 

 slow-breeding propensities. 



Oyster Shell Scale of Apple (Lepidosaphes ulmi). This scale af- 

 fects the apple chiefly, although sometimes the pear also. Owing 

 to the thickness of the armor, it is one of the most difficult of the 

 scales to exterminate. It is easily recognized by its long curved 

 form. 



Rose and Berry Scale (Aulacaspis rosce). This scale has such 

 striking forms that it can be readily recognized. The round white 



