Cultivation of Arable Land. Potatoes. Soils proper for* 89 



much ftronger, \vhere proper attention is bellowed in their culture. On grounds 

 of the peat-mofs kind they have likewife been found to fucceed in a high de 

 gree. In Mr. Townley s experiments, though the more ftiff and tenacious fort 

 of lands do not feem to have been tried, the produce appears to have been the 

 largefl on the ftrong kinds of foil ; but, in every cafe, it is efTentiai that they be 

 dry, the ftagnation of moifture being highly detrimental to the growth of this 



The potatoe, though it is found to fucceed to advantage in the more open 

 and porous forts of land, is not well fuited to thofe of the perfectly fandy kinds, 

 as they feldom retain a fufficient degree of moifture to enable the tubrous roots 

 of the plants to fwell out and become of a good lize, nor is there, in general, a 

 fufficient proportion of vegetable mould in fuch foils to promote the moft perfecT: 

 growth of the crop. It is only in fuch as poflefs a confiderable degree of light- 

 nefs and good carbonic earthy matter, that they are enabled to propagate their 

 fubterraneous wires or root-buds, become fully diftended, and attain their 

 utmoft fize and increafe. 



And the refults of Mr. Baker s trials in Ireland, in comparing different forts, are thus ftated : 



Sorts. Produce. 



Commonwife - - - - 21 Ib. 6 oz. 



Apple .... 20 2 



Red French - 15 1-2 



Muniler white ifl 



Crones - - - - - l(j 6 



Spanifh - 15 10 



On repeating the experiment, the refult was : 



Sorts. Produce. 



Black - - - - 111 barrels per acre. 



Quakerwife .... 108 



Red French ... 33 



White ditto - - 85 



Commonwife ... 103 



Apple - ... 76 



Englifh white .... 33 



White Munfter 79 



Spanifh - 70 



Crones - - 60 



* The refults on planting four eyes of the clutter potatoe, on four different forts of foil, were thcfe : 



Kinds of Soil. Produce. 



On a ftrong rich loam - - - 34 Ib. 



On a light rich loam 29 



On a good gravel - 19 



Onafand - - - J9 

 VOL. II. N 



