308 THE SCHOOL GARDEN. 



with water from a garden hose regularly will be found 

 effective as a check. 



These Aphides have various natural ene- 

 mies. The small almost hemispherical spot- 

 ted beetle, known as the ladybird, and its 

 larva feed on these (Fig. 166). So also do 

 the larvae of Hover flies starlings and spar- 

 rows are also said to attack them. 



Ladybird. 



For notes upon some of the commoner 

 birds which visit our gardens see p. 113. 



