Read it through once

But from a Scotch hillside, as one looks down at the fertile valley below, one can see _first_ where the mosaic of hedges and dykes stops, _then_ where, after a narrow stretch of rough grass pasture, the cultivation ends; finally, where, ridge after ridge, rolling, heathery moorland, without enclosures and without any sign of man's handiwork, rises up to the highest peaks.