EditorialStudy: Two right hands, of a woman, Black crayon and white heightening on rough brown paper, Horizontal composition of two right hands, one above the other. Both are seen from above and turned toward the right with a slightly altered position of the fi...
EditorialRichmond, Surrey By Cornelius Varley,, 1781 1873, an English water-colour painter and optical instrument-maker. He invented the graphic telescope and the graphic microscope. Landscape, Watercolour, Rural, Britain, UK, Europe.
EditorialMechanism of the heliostata or heliostate, an optical instrument invented by s'Gravesande. Copperplate engraving by Wilson Lowry after a drawing by J. Farey Jr. from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Lon...