Anabasis

They got through that night by keeping up fires, for there was wood in abundance at the halting-place; those who came up late, however, had none, and consequently the men who had arrived early and were keeping a fire would not allow the late comers to get near it unless they gave them a share of their wheat or anything else they had that was edible.

So then they shared with one another what they severally possessed. Now where the fire was kindled the snow melted, and the result was great holes clear down to the ground; and there, of course, one could measure the depth of the snow.