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A lien or mortgage which is applied proportionately to every lot within a subdivision.

1. A recess in a wall, having the appearance of a door; usually used for symmetry of design. 2. A

A fine-grained barium sulfate, used as white pigment in paints.

A test for determining the fineness of cement, or other fine material, on the basis of the permeability to air

The fineness of a powdered material, such as cement, as determined by the Blaine apparatus; usually expressed as a surface

An apparatus for measuring the surface area of a finely ground cement, or the like, on the basis of its