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e bivalve shells of the genus Aspergillum, or Brechites. The valves are small, and consolidated with the capacious calcareous tube which incases the entire animal. The tube is closed at the anterior end by a convex disk perforated by numerous pores, or tubules, and resembling the rose of a watering pot. -- Watering tr…

The open space in a floor, to accommodate a staircase.

Native lead molybdate occurring in tetragonal crystals, usually tabular, and of a bright orange-yellow to red, gray, or brown color; -- also called yellow lead ore.

the power of the noble landowners was increased, the peasants allowed only to elect candidates from whom the governor of the province nominated the deputy, and all acts of the zemstvo subjected to the approval of the governor. Theoretically the zemstvo has large powers relating to taxation, education, public health, e…

writings of the ancient Persian religion, attributed to Zoroaster, but chiefly of a later date.