Insects Injurious to the Potato and Apple. 605 



after setting out, and if scales or other signs of insects are 

 found, they should be removed. Riley says that linseed oil 

 has been found useful, applied after the twigs had been 

 scraped, or on the scales, hot lye, he says, has also been suc- 

 cessfully used. Many washes that are used injure the fol- 

 iage, but only temporarily, tlie destroyed buds or leaves 

 being fully replaced in due time. A similar scale insect 

 attacks the pine, doing often considerable damage. 



