To the /Agricultural Socldy, 153 



ten days before you defign to commence crofs-ploughing, take 



a heavy three horfe harrow, and give the fallow a good 



harrowing ; it will fubdue fuch of the fward that may remain 



green and clofe the cavities, and loofen the ground. The 



crofs-ploughing ought to be compleated by the loth of July, 



otherwife the befl of the feafon will be loflj for it is well 



known, that the greateft feafon for exhalation is drawing on, 



and of confequence the dews will be flrongly impregnated with 



alkaline falts, or wdth fome other ftrong, powerful body of 



fubtile matter : For inflance, if you have a fore upon any 



part of your body or limbs, take and wet it with the dew that 



falls then, and it will fmart ; if wetted with fpring water, it 



will not have the fame effed. After the crofs-ploughing, 



or any of the other fucceeding ploughings that you defign to 



give it, ftri£t attention ought to be paid to the falling of rains, 



that will beat the top of the ground 5 or, when your ground 



has laid a week, or ten days, there will be a thin cruft 



formed on the top of it; Whenever that is the cafe, commence 



harrowing of it ; for one good three horfe team will 



then be able to harrow ten acres per day, otherwife that crufl 



will be detrimental to the reception of thofe fubtle fluids, which 



have been mentioned, that compofe vegetables. Repeat the 



operation according to the ftate the ground is in ; if poor, it will 



require more; but on an average, five ploughings and 



harrowings at proper diilances of time, from each other, will 



U 



