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INTRODUCTION 



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CRICULTURE Slid GaRDENI^ 



though of fuch g 



ility 



produ 



the nutriment of mankind 



fiftino- of numerous detached fads and .vague opinions 



to be only Arts 



without ; 



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true theory to connect them, or 1 



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time when many parts of knowled 



analo 



%y 



ippreciatfr their 



of much inferior confeq 



at a. 



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have been nicely arranged, . and digefted into Sc 



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ledge of Agriculture, and Gardening 



imperfea^ acquaintance with the phyfiology and economy of 

 on IS the principal caufe of the great immaturity of our know- 



I fliall therefore firft attempt 

 a theory of vegetation, deduced principally from the experiments of 

 Hales, Grew, Malpighi, Bonnet, Du Hamel, BufFon, . Spallanzani, 



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Prieftley, and the Philofophers of the Linnaean School,, with a few 

 obfervations and opinions of my own ; fome of which have in part 



already appeared in Zoonom 



and in the notes to the Botanic Gar 



den, but are here correded and enlarged... To the former of which 



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works I hope this may be efteemed a fupplement,,as it i& properly a 

 continuation of the fubjed. . 



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