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  • A kneeling figure is purified by the sunlight which falls through a magnifying glass held by an angel, representing consideration (meditation). Etching by J. Clark, 1720.
  • First aid hints.
  • People using advanced materials and modes of transport in the year 2000, some travelling in hot-air balloons, some with their own wings, and some in carriages running on steam. Lithograph by C.J. Grant, 1834.