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
Botanical Garden of Tver State University Garden identified the following sectors: The following departments: The Division is divided into sub-sections: Small-leaved mixed forest, broadleaf forests, oak, the site of the South European deciduous forests Placed on the territory of some 350 species. The most widely represented the family Araceae (about 50 species), Orchidaceae (about 20 species), Polypodiaceae (about 30 species), Arecaceae (15 species), Bromeliaceae (10 species), Agavaceae (10 species), Gesneriaceae (10 species), Liliaceae (10 species). At the station placed 135 species. Most of the species collected in the collection of natural habitats. Represented by steppe species, for which the Tver region is the northern boundary of