282 LANDSCAPE GARDENING. 



trees in California and the South, lias been largely dis- 

 tributed about the country, having been found in every 



FIG. 165. SAN JOSE SCALE. 

 (Howard : " Insect Life," Vol. VII., p. 235, Fig. 23.) 



State in the Union, and is sure to prove a destructive 

 pest unless destroyed as soon as discovered. The perfect 

 insect is circular in outline, of a gray color, varying 

 from -gV to -f w of an inch in diameter, and generally 

 with a black spot in the centre. It is so small as to 

 escape notice until it has increased to great numbers, 

 and it propagates very rapidly. It injures plant-growth 

 in the same way as the last by sucking the juices of the 



