PECUS TRA CEON Ss: 
Page. 
Pruate XII. Fig 1.—The European fruit Lecanium (Lecanium corni) on pecan. 
Fig. 2.—The European pear scale (Hpidiaspis pyricola) on pear. ‘148 
XIII. View of prune orchard used in experiments against the European 
pear sCale 22 >... gasS-ate oe bs toe Bee ene eee 152 
IV 
