WARDIAN a.
ting, or pertaining to, a kind of glass inclosure for keeping ferns, mosses, etc., or for transporting growing plants from a distance; as, a Wardian case of plants; -- so named from the inventor, Nathaniel B. Ward, an Englishman.
YEAST n.
mealy cake impregnated with the live germs of the yeast plant, and used as a conveniently transportable substitute for yeast. -- Yeast plant (Bot.), the vegetable organism, or fungus, of which beer yeast consists. The yeast plant is composed of simple cells, or granules, about one three-thousandth of an inch in diamet…