nearly as exact as drawn with a line of rule and compass.Where deep burns or gullies of wa|ter cross these roads, they avoid both the descent and ascent in a very cu|rious manner; so that on the side where the road enters those hollows, they rather ascend along the slope, and descend the opposite side until they come to the level, without the traveller being sensible of ascent or descent. There are other smaller glens falling into this Glen-Roy. The parallel roads surround all these smaller ones; but where Glen-Roy ends in the open country there are not the smallest vestiges of them to be seen. The length of these roads in Glen-Roy are about seven miles. There are other two glens in that neighbour|hood where these roads are equally visible, called Glen-Gluy and Glen-Spean,0