SS'^ [Assembly 



the atmosphere. The result has been the disappearance of the 

 blight and the s;rowth and perfection of the grapes. Besides 

 this, the house has been cleared of an immense number of blue 

 bottles and other flies, which used to prey on the grape. The 

 destruction of the flies is supposed to be by the fumes of the lime^ 

 which has been every now and then stirred up and the dust 

 thrown about j but it may be by the sulphur. Be it which it may 

 the flies lie dead about by hundreds, and the grapes are healthy 

 and fine. It is said that a better method is to subject the sulphur 

 to a slow sublimation by heat of 170^ or 180° Fahrenheit, with 

 the house close shut up ; but we speak of that only which we- 

 know. 



Herpiri's Memoir on Insects Ivjv>rions to Jlgriculture^ with valuable- 

 plates. From Alexander Vattemare, August, 1851. 



The author treats of six insects, enemies of wheat, by the- 

 names, 1st. Chlorops Lineata; 2d. Chloiops Herpinii ;, 3d. Cephus- 

 Pygmseus; 4th. Alysia Olivieri; 5th. Apion Aprieusj 6th. Calyp- 

 trus Macrocephalus. 



First J This fly is about one-twelfth of an inch in length, has 

 two wings, and, when magnified, is beautifully colored — abdomen 

 yellow, head and body yellow with dark stripes lengthwise, wings- 

 delicately colored. 



Second, This fly is rather smaller than the first, very like it in 

 all other respects. 



Tkird, Very like the two former, but four or five times longer 

 and broader; wings delicately tinted like the former. 



Fourth, This fly is about one-tenth of an inch long resembling 

 a wasp in shape, body black, Avings delicately tinted like th& 

 former with black, a black shot on the upper edge of each wing. 



Fifth, Wasp-shaped, abdomen yellow, body black, wings lik& 

 the delicate color of the former. 



Sixth. — About one-tenth of an inch long, double wings, the fore 

 one having each a black spot on its upper edge. Pteromalus 

 Pione, about one-twelfth of an inch long, wings colored like the 

 former. 



