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THE FLY- WEEVIL. 



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294 



and foil: The apples of a Newtown pippin tree, growing 

 in New-York and Virginia, have fcarccly a refernblance in 

 tafte. The vine from which Burgundy wine is made ia 

 Burgundy, when tranfplanted into Champaigne, produces 

 Champaignewine, and the Champaigne vine, tranfplanted 

 into Burgundy, makes Burgundy wine. Beans and peafe 

 from England, planted in America, foon dwindle much 

 from the originals; and the alteration that foils and 

 climates produce on wheat is fo well known, that all care- 

 ful farmers in Europe change their feed-grain often; this 

 is fo remarkable in America, it is obfcrved, that the red 

 flinty wheat Mdiich grows in the Itrong mountainous lands, 

 when fowed in low moift places, undergoes a <>Tadual 

 change for four years, and then becomes light coloured, 

 thin fkinned, and of a foft texture; and that this wheat 

 fowed in the high lands, takes the fame time to recover 

 its natural colour and quality. Therefore if the injury 

 of wheat from flies depends on the foft quality it contrads 

 by its growth in moift low lands, a proper annual change 

 of feed-grain, will alone prove an eafy and certain remedy 



the prefent deftrudtive and alarming 

 mouRft us. 



againft 



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Obfervations on the native SILKS WORMS of Norths 

 Jmertca, by Mr. Moses Bartram. Read before the 



Society -i March 11, 1768, 



HAD, for a long time, a defire to know, if fome of 

 _^ the wild filk worms of North-America could, with 

 proper core, be propagated to advantage; accordingly, in 

 March, 1766, I made an excurfion. along the banks of 

 Schuylkill, infcarch of fome pods or cocoons, in which the 

 worms fpin themfelves up and lie concealed all the winter 

 in the nymph ftate, preparing for a change in the fprin^r, 

 namely, from an aurelia to a fly, ^ 



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