Natural philosophy. being a hand-book of chemical physics, or, The physics of heat, light and electricity
A school handbook of chemical physics covering heat, light and electricity, written by John Herbert Sangster and published in Montreal by John Lovell in 1869 for Canadian students and teachers. The wood-engraved figures are ray diagrams: lettered lenses hatched in line, crossing light paths, mirrors and a small engraved eye, offering geometric line motifs and optical schematics for reuse.
