August Johann Rösel von Rosenhof the fathers of German entomology. The fourth part is practically a monograph of the spider Araneus diadematus. The description of the animal is illustrated by six plates which show the differences in variation of the colouring of the species. They show also internal dissections. Rosenhof was interested in the production of silk but he confused the anus with the opening of silk-producing glands. He published, between 1753 and 1758, "Historia naturalis Ranarum nostratium" devoted to frogs. The quality of the work, in particular of its illustrations, make it one of the most beautiful devoted to these animals. He presented the
European Day of the Righteous Hons. Gabriele Albertini, Lena Kolarska-Bobinska, Niccolò Rinaldi, and defines the aims of the European day of the Righteous in the following way: The European day of the Righteous was approved by the European Parliament on 10 May 2012 with 388 signatures. The activities related to the Righteous are supported at the international level by Gariwo, the forest of the Righteous, the Garden of the Righteous for the Armenians in Yerevan, the writer, founder of NGO Gariwo Sarajevo and activist for civil courage Svetlana Broz who is struggling to create a Garden of the Righteous in Sarajevo and such figures as