They greatly excel the Lowlanders in all the exercises that require agility; they are incredibly abstemious, and patient of hunger and fatigue; so steeled against the weather, that in traveling, even when the ground is covered with snow, they never look for a house, or any other shelter but their plaid, in which they wrap themselves up, and go to sleep under the cope of heaven. Such people, in quality of soldiers, must be invincible . . .