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
Mehan Garden Mehan Garden Mehan Garden is an open space in Manila, Philippines. It was established in 1858 by the Spanish colonial authorities as a botanical garden, called the "Jardín Botánico", outside the walled city. It was one of a number of botanical gardens established in Asia by European colonial powers (for example, Acharya Jagadish Chandra Bose Indian Botanic Garden in 1787 and Bogor Botanical Gardens in 1817). Sebastián Vidal was the best known director of the garden. He came to the Philippines in 1871 to work in the forestry service ("Inspección General de Montes"). He was director between 1878 and his