INJURING THE ROOT. 



109 



root, the earth should be dug away and the borers 

 searched for, as is done with the Peach-borer. It has 

 been suggested that mounding about the base of the 

 vine with earth would prevent the deposition of eggs. 



The Grape Phylloxera. 



Ph ylloxera vasta ti •/./■. 



The Grape Phylloxera is the worst insect enemy of 



the vineyardist. Its ravages have ruined thousands 



of acres of grapes in France and other European 



countries, and much damage has been done by it in 



Fig. 49. Phylloxera galls on grape leaf. 



America. There are two forms of it, one inhabiting 

 the roots (represented in its various stages at Fig. 51), 

 and one inhabiting the leaves (Fig. 50) upon which 

 it forms minute galls (Fig. 49). 



7 



