EditorialColumba leuconota, Print, The snow pigeon (Columba leuconota) is a species of bird in the genus Columba in the family Columbidae from hilly regions of central Asia. They are grey, black, pale brown and white birds, and two races are recognised; C. l. l...
EditorialForms of rock columns_1, Tectonics, wide and deep rock crevices growing in the depth or in the interior of the mountain, woodcut, p. 48, (Liber tertius), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus...
EditorialForms of dykes_2, Tectonics, straight, indirect and curved rock crevices and dykes, woodcut, p. 41, (Liber tertius), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus officia, instrumenta, machinae, ac o...
EditorialExtended tunnels_3, A naturally decaying rock cleft is extended and supported by narrow crossways and crevices created, woodcut, p. 51, (Liber tertius), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus ...
EditorialExtended dykes_2, A naturally decaying rock cleft is widened by artificially created crossways and crevices, woodcut, p. 45, (Liber tertius), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus officia, in...
EditorialColumba leuconota, Print, The snow pigeon (Columba leuconota) is a species of bird in the genus Columba in the family Columbidae from hilly regions of central Asia. They are grey, black, pale brown and white birds, and two races are recognised; C. l. l...
EditorialMold for Bes-image Amulet, New Kingdom, Dynasty 18, ca. 1390?1353 B.C., From Egypt, Upper Egypt, Thebes, Malqata, S. Magazines or Factories, 1910?12, Pottery, H. 4.3 ? W. 3.2 ? D. 1.5 cm (1 11/16 ? 1 1/4 ? 9/16 in.), This mold was used to make an amule...