MARL n.
A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand.
MASTIC n.
A kind of cement composed of burnt clay, litharge, and linseed oil, used for plastering walls, etc. Barbary mastic (Bot.), the Pistachia Atlantica. -- Peruvian mastic tree (Bot.), a small tree (Schinus Molle) with peppery red berries; -- called also pepper tree. -- West Indian mastic (Bot.), a lofty tree (Bursera gum…