50 



Dissolve the soap in boiling water, using up to 2 Ib. if the 

 .water is at all hard. Remove from the fire, and, while still 

 very hot, add the paraffin and mix thoroughly by syringing 

 the liquid back into itself with a hand syringe. Thorough 

 mixing is important if a good emulsion is to be obtained. 

 ... Any .of the above winter washes should be sprayed on to 

 the trees so as to wet thoroughly the twigs and branches. 



THE APPLE SAWFLY. 



(Hoplocampa testudinea, Klug.) 



1 



The Apple Sawfly, though a serious pest in many parts of 

 the country, frequently passes unrecognised since the injury 

 it causes resembles in many ways that of the better known 

 Codling Moth (Cydia pomonella). (See Leaflet 30.) It is 

 necessary, however, to distinguish between the two insects 

 since some of the measures of service in the control of the 

 {Codling Moth are useless in the case of an attack by the Apple 

 Sawfly. The essential differences are, given under the headings 

 .'.' Description " and " Nature of Damage." 



The Apple Sawfly is widely distributed in England and it 

 has been reported as injurious in parts of Scotland and Ireland. 

 In Continental Europe it has been recorded from Sweden, 

 Germany', Holland and France. 



