'^76 GARDEN FOES. 



Beech Scale (Cryptococcus fagi).— Insects belonging 

 to the Scale family. The female is lemon-yellow in 

 colom% wingless and legless, and measures l-25in. in 

 length. In a young state the insects move freely about 

 the bark, but when they attain maturity they fix them- 

 selves permanently to it, suck out the sap, and clothe 

 themselves with a white felted secretion of fila- 

 ments of wax. The females are parthenogenetic, and pro- 

 duce their young without the assistance of the males, 

 which are unknown. 



[Photo: H. A. Smith. 

 rOPLAR-LEAE STALK GALI. (UlPlvOSIS TREMUJ/^). 

 The galls are formed by midgee at tli'^ base of the leaf potioloa as shown. 



Kbmbdie^. — These must be of a di'astic character, and 

 be promptly applied before the tree is too far crippled. 

 Spray the tree thoroughly with Formula? Ncs. 1 or 2 in 

 winter. Spray for two or three successive seasons until 

 the scale is obliterated. 



Buff-tip Moth (Pygoera bucephala). — The caterpillars 

 of this moth are very partial to the leaves of the lime, 

 oak, and elm, and when very numerous will often strip 



