coal-bag

You have only to look at the bottom of the pond; you'll find him there in a coal-bag, with a big stone tied to it.

The works of Guy de Maupassant, Vol. 5 (of 8) Une Vie and Other Stories Guy de Maupassant 1871

Austin assured me that there was nothing to ground such a belief upon; and that, from experience, he could vouch for these being nothing more than the ordinary traces of a winter station, and this opinion was fully borne out by those officers who had in the previous year wintered at Port Leopold, one of them asserting that people left winter quarters too well pleased to escape to care much for a handful of shavings, an old coal-bag, or a washing-tub.

Stray Leaves from an Arctic Journal; or, Eighteen Months in the Polar Regions, in Search of Sir John Franklin's Expedition, in the Years 1850-51 Sherard Osborn 1848