A system of natural philosophy : in which the principles of mechanics, hydrostatics, hydraulics, pneumatics, acoustics, optics, astronomy, electricity, magnetism, steam engine, electro-magnetism, electrotype, photography, and daguerrotype, are familiarly explained, and illustrated by more than two hundred and fifty engravings : to which are added, questions for the examination of pupils : designed for the use of schools and academies
Heavy accretion of dust on image and frame. Bulging of surface in TR area of painting (probably from the pressure from the back). Three tears in canvas: 24.5cm to 32cm TR X 30cm to 34.5 cm R; 33cm to 35.5cm RM; and 35cm R X 35cm B (2cm in diameter). M
Crazing all around surface. Distinct mark indented into paint in area center. Canvas is loose from the frame. Frame has mild reddish-brown accretion marks from apparent rubbing.