C 35 3 



Articlc IV. 



A Supplement to the Anftver fait to the Secretary of 

 the Bulb S pcclivg Vegetation , &c. 



And read before the Liicrary and Pbilofopbical Society of Man- 

 cbtjier, the id of July 1782. 



[By Mr. JOSEPH WIMPEY.] 



AS truth and ufefulnefs arc the ultimate ob- 

 jects of philofophical enquiry, the writer of 

 the anfvver prefumes to hope, the candid focicty 

 will indulge him with an opportunity of endea- 

 vouring to obviate the objections made to it, that 

 appear to him to be groundlefs. 



Queflion. " If arable land, after having borne 

 " a few crops, mud remain fomctime fallow be- 

 " fore it is fit to produce the fame courfc of 

 * crops again; whence proceeds the neceflity of 

 " fuch fallowing? Docs the earth, by the grdv 1 

 " of vegetables, lofe any particles necefTary for 

 " future vegetation, &c.?'^ 



To this it was anfwered : — c< That the earth, by 

 " the growth of vegetables, docs lofe certain | 

 " tides necefTary for future vegetation, is a fact 



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