21 avril 2015

Imbroglio - Mixed up

Imbroglio - Mixed up Double Refracting or Iceland Spar, stereoview published  by Lovell Reeve in 'The Stereoscopic Magazine', August 1858 (Collection José Calvelo)   Caption on the back of the mount : "This beautiful specimen has been photographed, and its stereograph has been published in the second number of the 'Stereoscopic Magazine'. This stereograph illustrates, in a very striking manner, the double-refracting properties of the Spar. A label, containing the words 'Stereoscopic Magazine', is placed behind one of the... [Lire la suite]