THE PEAR SAWFLY. 47 



a yellowish colour. They now leave the leaves and in the ground spin 

 a silky cocoon, covered outside with soil, here they pupate and remain 

 until the following July. 



PREVENTIVE AND REMEDIAL MEASURES. 



Wherever an attack of this insect has been experienced the surface 

 soil should, in so far as possible, be turned over in order to bury the 

 pupae. 



Respecting sprayfluids, lime water and tobacco-w T ater have been 

 recommended, but I have found nothing better than t\vo applications 

 of V2 Fluid, the second application to follow in a day or t\vo after 

 the first. 



Dusting the trees twice with slaked lime, as a fine powder, is often 

 effective. Here again the second application should follow the first 

 in a day or so. 



