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lent plants, have been moft^of tliem, at leaft the fine forts, greatly improved by culture, they are fully 



treated of under their proper genera. 



On this article a long feries of obfervatlons has been made by the author, who for hear fifty years 

 has applied himfelf clofely to this fubjeft j for as many former botanifls have ^numerated a great 

 number of varieties as fo many fpecies, the ftudy of botany was thereby rendered greatly pei'plexed; 

 fbme of the modern writers on this fubje<5l, by going Into the contrary extreme, have abridged the 



fpecies almoft as much. 



be 



afcertaining the real fpecific difference of 



plants, would be of great fervice to the fcience of botany ; but this cannot be done otherwife, than 

 from many years experience in their culture, efpecially by obferving the varieties which arife from 



different 



good 



There "are likewife many other varieties which 



have arifen from feeds, faved from plants, and grown near others of a different fpecies, by which 

 means they have partaken of both ] but thefe hybridine plants rarely producing any feeds afterward, 



the alteration eoes no farther. ' ■/ 



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