Which in winter, when the traveller neither needs nor desires it, are full of water, then congealed by the frost. Wherein the snow is hid; either,
1. Under which the water, made of snow, which formerly fell, and afterwards was dissolved, lies hid. So he implies that he speaks not of those brooks which are fed by a constant spring, but of them which are filled by accidental and extraordinary falls of water, or snow melted, which run into them. Or,
2. Wherein there is abundance of snow mixed with or covered by the ice; or, in which the snow covers itself, i.e. where is snow upon snow; which gives the traveller hopes, that when he comes that way in summer, he shall find good store of water here for his refreshment.