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A system of familiar philosophy : in twelve lectures / being the course usually read by Mr. A. Walker. Containing the elements and the practical uses to be drawn from the chemical properties of matter ; the principles and application of mechanics; of hydrostatics; of hydraulics; of pneumatics; of magnetism; of electricity; of optics; and of astronomy. Including every material modern discovery and improvement to the present time. Public Domain Mark. Source: Wellcome Collection.