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our climate, and with our prolonged summers, to raise 

 not merely two crops of silk a year, with a void interval 

 of time between them, but numerous crops of different 

 ages at the same time and in rapid succession for a sea- 

 son. With the complete establishment of such a sys- 

 tem, a new era with us will commence. I have called 

 this The American System, because this is the system 

 which seems best of all adapted for America. There 

 are mulberries which in our climate will renew their 

 foliage suddenly, and for numerous successive times in 

 a season. The trees will bear stripping twice and even 

 thrice in a season, which is not the case with the white 

 mulberry, even in a good portion of Italy. Where a 

 regular succession of crops can thus be obtained, with 

 a diminished proportion of labor, of land, of cultivation, 

 of habitations and of furniture, for the successive gen- 

 erations of insects, how greatly augmented must be the 

 profit. 



Some, I am aware, might object, on the supposition 

 that the plan has been before tried a hundred times in 

 Italy, in France, and other countries. Not a doubt ex- 

 ists but it has been tried ; but we have no evidence 

 whatever that in a suitable climate it has ever been tried 

 fairly and aright and failed. 



Count Dandolo has indeed advanced the opinion that 

 in Italy it is disadvantageous to obtain more than one 

 crop in each season. He affirms that in that climate 

 the mulberry tree cannot bear the continual stripping 

 of its leaves without injury. His remarks however must 

 have reference exclusively to the white mulberry, since 

 the morus multicaulis was not known in any part of Eu- 

 rope at the time his celebrated work was written. 



In the latitude of Paris, from the latest information 

 which I have just received from that country during the 

 past year, it is confidently affirmed, on high authority, 

 that by the acquisition of the Chinese mulberry, a doubt 

 no longer exists that two crops of silk may be obtained 

 in a season, even in the northern departments of France, 

 where never more than a single crop could be obtained 



