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different foils, from the lighteft fand to the ftrongeft clay, 

 is readily afcertained only by obferving at what diftance, 

 under the furface of the land, the fecondary or coronal 

 roots are formed in the fpring. 



In different parts of the kingdom, lands or ridges are of 

 different fizes; where the machine is too wide for the 

 land, one or more funnels may occafionally be flopped 

 with a little loofe paper, and the feed received into fuch 

 funnel returned at the end of the land, or fooner if re- 

 quired, into the upper feed-box. But for regularity and 

 expedition, lands confifting of fo many feet wide from out- 

 fide to outfide, as the machine contains coulters, when 

 fixed at twelve inches diftance, or twice or three times 

 the number, &c. are beft calculated for the machine. In 

 wet foils or ftrong clays, lands or ridges of the width of 

 the machine, and in dry foil?, of twice the width, are re- 

 commended. For fowing of narrow high-ridged lands, 

 the outfide coulters Ihould be let down, and the middle 

 ones raifed, fo that the points of the coulters may form 

 the fame curve, that the land or ridge forms. And the 

 loofe foil harrowed down into the furrows fhould be re- 

 turned to the edges of the lands or ridges, from whence it 

 came, by a double mould-board, or other plough, whether 

 the land be wet or dry. 



Clover or other lays, intended to be fown by the 

 machine, fhould be ploughed a deep ftrong furrow, and 

 well harrowed, in order to level the furface, and to get as 

 much loofe foil as poflible for the coulters to work in; 

 and when fown, if any of the feed appears in the drills 

 uncovered, by reafon of the fliff texture of the foil, or 



toughnefs 



