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
Ljubljana Botanical Garden Ljubljana Botanical Garden The Ljubljana Botanical Garden (), officially the University of Ljubljana Botanical Garden (), is the central Slovenian botanical garden, the oldest botanical garden in Southeastern Europe, and one of the oldest cultural, scientific, and educational organisations in Slovenia. Its headquarters are located in the Rudnik District of Ljubljana, the Slovenian capital, at Ig Street () along the Gruber Canal to the southeast of Castle Hill. The garden started operating under the leadership of Franc Hladnik in 1810, when Ljubljana was the capital of the Illyrian Provinces. It is thus an averagely old European botanical garden. The institution