110 



THE UNIVERSE. 



with black, the Cldorops llneata, alarms the farmer by 

 attackmg the grain crops. Limiteus says that in Sweden 

 this fly, unassisted, destroys more than the fifth part of 

 the barley crops, equivalent at least to 100,000 tons. In 



.56. The Pyralis of the Vine in its different Stages — Pyralis striguhdis. 



central France this insect sometimes devours half the ears 

 of corn in our fields. 



Another, the olive-tree Dacus, is the cause of our losing 

 every year 3,000,000 olives. Finally, a Initterfly, the 

 Pyralis, carries despair into tlie wine countries, which have 

 now for a long time vainly im2)lored the aid of science. 



When trees attacked by dense swarms of insects do not 

 sink under their fangs, they escape with singular deformities. 



