71 The Sheep Position in Scotland. Memo by the Department of Agriculture for Scotland. 1. Comparing 1938 with ten years ago the sheep population has on the whole varied little in the Highland and other areas which specialise in sheep-rearing. In the see period there has, however, been a marked increase of numbers in the mainly arable districts. Increases in the north cast are in the neighbourhood of 60%, and have in many areas been accompanied by a change from arable land to grass. In so far as the food production campaign will bring back much of this grass to tillage, the sheep population in these areas will tend to decrease.