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Secondly; " Is the water of land-fprings?" &c. 

 I apprehend no certain particular anfwer can be 

 given to this general qucftion. 



The effects of the water of land-fprings mufl 

 depend upon the nature of the ftrata through 

 which it pafTes, and may be beneficial or other- 

 wife to vegetation, as that might be if applied 

 in fubftance. Calcarious earths, in general, are 

 friendly and conducive to vegetation; and from 

 thence it fecms probable, that water iduing from 

 limeftone-rocks would promote the growth of 

 vegetables in proportion to its impregnation by 

 the calcarious matter. 



The effects of limeftone- water have never fallen 

 within my obfervation; but from what I have 

 obferved of land-fprings, I have often thought 

 the benefit from them was nothing more than 

 from the fimple flued as a conftituent part nece'C- 

 fary to the accretion of all bodies, abftracted from 

 every principle of nutriment but what is contained 

 in water as fuch only. 



However, there cannot be a doubt, but differen t 

 fprings arc impregnated with different qualities, 

 the particulars of which cannot be known but from 

 obfervations of their effects. 



Vol. II. L MMfr 



