114 



*' water communicate the same colour to 

 ^' it in proportion to their fertihty; and 

 ** this water being evaporated, leaves also 

 ** a coal, as Mr. IIassenfraz and Four- 

 •* CROY attest. Coal however," Mr. Kir- 

 wan adds, " cannot produce its beneficial 

 ** effects, but in as much as it is soluble 

 ** in water." A strong argument this in 

 favour of floating, and of floating with a 

 solution of the putrefying contents of a 

 farm-yard, or in other words, with a solu- 

 tion of coal ; and will the second or third 

 using of such a solution, let me ask Mr. 

 Young, contain as much of this coal a& 

 the first using contained ? 



Page 40, Mr. KiRWAN writes thus :-—» 

 *^ Mr. RucKERT is persuaded that earth 

 ** and water, in proper proportions, form 

 *' the sole nutriment of plants, but Mr. 

 ** GiOBERT has clearly shewn the eon- 

 ^* trary ; for, having mixed pure earth of 



" alum. 



