LOPPA: dregs, lees, scum, as of the glass scum, loppa di vetro, in the metal vent of the crucible described. Tra. 198.
LORDO: greasy, as of the surface of metal in the working. Tra. 28.
LORDURA: literally lordura di untume, fatty substance, removable with aquafortis. Tra. 31.
LOTO: a paste or composition, as of ashes. Tra. 126. Also a luting, as of the closing of the joints in an alembic. Tra. 156.
LUSTRO: the shine or glimmer on the metal left by the use of the punches, &c. Tra. 28, 195.
MACINARE: to pound. Tra. 104, 148.
MADRE: the matrices of the dies; the mother punches. Tra. 118.
MAGLIA, MAGLIETTA: an eye or socket of iron fitted into the plaster mould of a casting. Tra. 167, 168.
MAGRO: coarse and thin; used of clay as distinguished from the rich and fatty quality. Tra. 163.
MANDORLA, MANDORLETTA: literally, an almond shape; used of jewellery thus shaped, & of the shapes of Cardinals’ seals. Tra. 20, 99.