IN SCOTLAND.

2 + 3

millstones, or any heavy blocks of stone: the wheels of thiscart are only about two feet dianieter; its axle is but five feetin length, so that the wheels run under the body of the frame,which is perfectly flat on the upper side, and may be made ofany length or breadth found necessary, for carrying long,broad, thin stones. These machines must be made verystrong, in order that they may support a great weight withoutbeing in danger of giving way under the load.

SECT. VI.

IMPLEMENTS FOR DRAINING LAND.

1 he instruments generally made use of in^Scotland for cut-ting drains, are the spade and the mattock, or pick; and wherethe ground is very hard, or full of stones, these seem to bethe most proper implements for that purpose. In some dis-tricts, though very rarely, a drain-plough is adopted ; this ma-chine consists of a beam, three coulters, a share, two mould-boards, a sheath, and two directing handles, with a cross frameof wood fastened upon the upper side of the beam, near to itsback-end. One of these coulters is fixed into a mortice in thebeam; this being the middle one, the other two arc placedinto mortices in the cross frame, equidistant from it oil eachside ; these two coulters can easily be shifted, and fixed at agreater or less distance from one another, and also set moreor less oblique, according as the drain is wanted wide or nar-i’ow, and more or less sloped in the sides. The share is fix-ed upon the fore-part of an inclined plane, and the fore-endsof the mould-boards arc attached to the sheatli with ironhinges, by.which means they may be easily expanded or con-tracted, in proportion to the width of the drain. W hen the