IMPLEMENTS 153 



four good-sized wheels. In the middle of the frame a coulter 

 was fixed to make a furrow for the corn, which fell through 

 a wooden pipe behind, that dropped the corn out of a hopper 

 containing about a bushel, the fall of the corn from the 

 hopper being regulated by a wooden wheel in its neck. The 

 same frame might contain two coulters, pipes, and hoppers, 

 and the instrument could be worked with one horse and one 

 man. It was considered a great advance on sowing broad- 

 cast, and by the use of it ' you may also cover your grain 

 with any rich compost you shall prepare for that purpose, 

 either with pigeon dung, dry or granulated, or any other 

 saline or lixirial (alkaline, or of potash) substance, which may 

 drop after the corn from another hopper behind the one that 

 drops the corn, or from a separate drill '. The corn thus sown 

 in rows was found easier to weed and hoe, so that it is clear 

 that this advantage was well understood before Tull's time. 



There was a great diversity of ploughs at this date, almost 

 every county having some variation. 1 The principal sorts 

 were the double-wheel plough, useful upon hard land, usually 

 drawn with horses or oxen two abreast, the wheels 18 in. to 

 20 in. high. The one- wheel plough, which could be used on 

 almost any sort of land; it was very 'light and nimble', so 

 that it could be drawn by one horse and held by one man, 

 and thus ploughed an acre a day. 



Then there was a ' plain plough without either wheel or 

 foot ', very easy to work and fit for any lands; a double plough 

 worked by four horses and two men, of two kinds, one 

 ploughing a double furrow, the other a double depth. 



There were also ploughs with a harrow attached, others 

 constructed to plough, sow, and harrow, but not of much 

 value ; and a turfing plough for burning sod. Carts and wag- 

 gons were of many sorts, according to the locality, the greater 

 wheels of the waggon being usually 18 feet in circumference 

 the lesser 9 feet. A useful implement was the trenching plough 

 1 Worlidge, Systema Agricultures, p. 205. 



