33 



insect ever becoming unbearably numerous in Illinois, can be resorted 

 to with the fullest confidence in its success. Both Dr. Kron and Mr. 

 Krone have ascertained by long observation and experiment, that the 

 Scuppernong grape-vine — which is a cultivated variety, according to 

 Dr. Asa Gray, of the wild Southern Fox Grape {Vitis vulpina) — is 

 entirely exempt from the operations of this Borer; and the former 

 gentleman has been successful in grafting both the European Grape 

 ( Vitis vinifera ) and many of our cultivated North American varieties 

 upon Scuppernong stocks, and has found that he thereby entirely es- 

 capes the ravages of the Borer. I do not find that this Southern va- 

 riety of grape has hitherto ever been grown in Illinois ; but there can 

 be little doubt that it would stand the climate, at all events of South- 

 ern Illinois, as a stock; and, if the worst comes to the worst, rather 

 than give up growing grapes, we shall have to fall back, as our last 

 resource, upon Scuppernong and Southern Fox Grape stocks for all 

 our cultivated varieties of the grape. 



Since the above was written, Mr. Geo. Husmann, the Missouri King 

 of -the Grapes, has obligingly informed me that he "has had the Scup- 

 pernong on his grounds at Hermann, Missouri," which lies over 100 

 miles to the north of the latitude of Cairo, Illinois, "for 15 years; 

 that it has fruited there several times, but that the fruit is entirely 

 worthless." He adds further that this Grape-root Borer "has been fa- 

 miliar to him for the last 15 or 30 years, and that it now and then de- 

 stroys a vine in the vineyards in his vicinity, but does not seem to 

 increase." 



INSECTS INFESTING THE APPLE.— On the Fruit. 



CHAPTER V. — TuE Apple- worm or Codling-worm Moth. (Carpocapsa po- 



monella, Linnseus. ) 



Both Harris and" Fitch seem to doubt the fact of there being two 

 distinct broods of this insect every year, the one generated by the 

 other, although Kollar and other European writers assert that it is so 

 in Europe. Possibly Harris & Fitch may be right, as regards the 

 more northern latitudes in the United States; but in the latitude of 

 Eock Island, Illinois, (41 degrees, 30 minutes,) I am satisfied that 

 there really are two distinct broods, for the following reasons : — 



1st. On July 18th and 21st, I cut into 70 windfall apples bored 

 by this insect, and found larvse in but three of the 70. Subsequently 

 about the middle of August I cut into a large number, and found 

 larvae in almost every one. 



2d. On August 22d I cut into an apple, that was very exten- 

 sively bored and had manifestly raised a larva to maturity. Yet it 



