120 



BOARD OF AGRICULTURE. [Pub. Doc. 



ods of treatment has no fear of this pest; and to him, as Mr. 

 J. H. Hale says, it is on the whole a blessing in disguise, for it 

 means that this pest will destroy so many of the fruit trees 



which are not given 

 proper care as to greatly 

 increase his markets and 

 improve his prices. 



Two other scales are 

 also frequently present 

 in the orchard, and at 

 times may cause trouble. 

 The oyster-shell scale 

 (Lepidosaphes ulmi L.), 

 being larger than the 

 San Jose scale, is more 

 frecjuently noticed and 

 feared by those not fa- 

 miliar with the subject. 

 But this fear is unnecessary, for the oyster-shell scale in- 

 creases slowly in numbers as compared with the other, and 

 mild soap washes applied in June are sufficient to hold it in 

 check. The same is true of the scurfy scale (Chionaspis 



Fig. 4. — Scurfy scale: a, female, b, male scales, 

 natural size, on twig* ; c, female scale, much 

 enlarged ; d, male scale, much enlarged. 



Fig. 5. — Apple maggot 

 all much enlarged. 



i, adult male fly; b, adult female fly; c, maggot; 



furfura Fitch), the dirty white color of which makes it very 

 noticeable. Trees attacked by these scales must be treated, 



