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. Illustrated by Forty-seven Copper-plates, neatly and accurately Engraved.