CHALDRON. A measure of coals, consisting of 36 bushels; a cubic yard = 19 cwts. 19 lbs.

CHALINK. A kind of Massoolah boat.

CHALK, To. To cut.—To walk one's chalks, to run off; also, an ordeal for drunkenness, to see whether the suspected person can move along the line. "Walking a deck-seam" is to the same purpose, as the man is to proceed without overstepping it on either side.

CHALKS. Marks. "Better by chalks:" wagers were sometimes determined by he who could reach furthest or highest, and there make a chalk-mark.—Long chalks, great odds.

CHALLENGE. The demand of a sentinel to any one who approaches his post. Also, the defiance to fight.

CHAMADE. To challenge attention. A signal made by beat of drum when a conference is desired by the enemy on having matter to propose. It is also termed beating a parley.

CHAMBER, or Chamber-piece. A charge piece in old ordnance, like a paterero, to put into the breech of a gun prepared for it. (See [Murderer].) Used by the Chinese, as in [gingals] (which see).

CHAMBER OF A MINE. The seat or receptacle prepared for the powder-charge, usually at the end of the gallery, and out of the direct line of it; and, if possible, tamped or buried with tight packing of earth, &c., to increase the force of explosion.

CHAMBER OF A PIECE OF ORDNANCE. The end of the bore modified to receive the charge of powder. In mortars, howitzers, and shell-guns, they are of smaller diameter than the bore, for the charges being comparatively small, more effect is thus expected. The [gomer chamber] (which see) is generally adopted in our service. In rifled guns the powder-chamber is not rifled; it and the bullet-chamber differ in other minute respects from the rest of the bore. Patereroes for festive occasions are sometimes called chambers; as the small mortars, formerly used for firing salutes in the parks, termed also pint-pots from their shape and handles.

CHAMBERS. Clear spaces between the riders, in those vessels which have floor and futtock riders.