![Optical TOy: "The London Mail Obstructed by a Snowdrift" (Spooner's Protean Views, no. 16)]()
Optical TOy: "The London Mail Obstructed by a Snowdrift" (Spooner's Protean Views, no. 16)![Newly invented portable walking-stick telescope : with achromatic object-glasses, of exceeding great power, by which views…]()
Newly invented portable walking-stick telescope : with achromatic object-glasses, of exceeding great power, by which views…![Anatomical section of the brain showing the optic chiasma. Colour lithograph by F. Foedisch, 1875.]()
Anatomical section of the brain showing the optic chiasma. Colour lithograph by F. Foedisch, 1875.![A horrified old woman observing the monstrous contents of a drop of water through a microscope. Coloured transparency…]()
A horrified old woman observing the monstrous contents of a drop of water through a microscope. Coloured transparency…