248 CULTURE OF THE GRAPE. 



species increase with great rapidity, and we cannot be too 

 much on our guard against them. Reports will materially 

 differ in different localities ; some places being entirely ex- 

 empt from insects that are very destructive in other sec- 

 tions. Every section, however, is liable to attack ; and it 

 is wise to know the enemy, and guard against invasion. 

 It is evident, that as the cultivation of fruit extends, and 

 as the number of birds diminishes, the increase of inju- 

 rious insects is a natural result. It will be absolutely 

 essential that human skill shall be made effectual against 

 this increase. Already we know of substances destruc- 

 tive to most insects, and there is no reason for discourage- 

 ment in a single instance. 



THE KOSE-CHAFER. 

 (Melolontha subspinosa of Fabricius.) 



The prevalence of this insect on the rose, and its annual 

 appearance coinciding with the blossoming of that flower, 

 hare gained for it the name of Rose-bug. Harris de- 

 scribes the beetle as "measuring seven-twentieths of an 

 inch in length, with a slender body, tapering before and 

 behind, entirely covered with very short and close ashen 

 down ; the thorax is long and narrow, angularly widened 



