It breeds abundantly in some seasons on the fells of Lapland, its appearance depending chiefly on the presence of lemmings (Lemmus norvegicus), on which it mainly preys.
It embraces over 10,000 acres, including the Blue Hill reservation (about 5000 acres), the highest land in eastern Massachusetts, a beautiful reservation of forest, crag and pond known as Middlesex Fells, two large beach bath reservations on the harbour at Revere and Hull (Nantasket), and the boating section of the Charles river.
As early as 1293 trade was carried on with Bayonne, and six years later a receiver of customs on wool and wool-fells is mentioned at Weymouth, while wine was imported from Aquitaine.
It is obvious that if the derivation be correct, the significance of the name, which in itself denotes only " He falls" or "He fells," must be learned, if at all, from early Israelitish conceptions of the nature of Yahweh rather than from etymology.
That home was situated on the border of the Middlesex Fells, a rough and rocky woodland, 4000 acres in extent, as wild and savage in many places as the primeval forest.