After the aquarium had been opened, three rooms were reserved for the collection of Crustacea, Molluscs, Echinides, Zoophytes, and Polyparies, with the famous collection of sponges, which is unsurpassed in any other museum. The total number of objects kept in these three rooms is 5,976. In this part of the museum is to be found a valuable collection of marine animals, brought from the Arctic regions by M. Barents and M. Varna. During the last three years a collection of _local_ animals has been commenced. In the second room of the museum you find not only a collection of stuffed animals and birds, with their eggs and nests, but also a collection of indigenous shells, fish, reptiles and the lower animals. The insects are lodged in three cabinets--one for the indigenous butterflies and moths, one for the exotic lepidoptera, and one for the coleoptera or beetles, arranged in 920 drawers. The scientific library is very rich in works on natural history; amongst other volumes is to be seen a complete edition of the works of Gould, the celebrated ornithologist. The library contains 5,131 books. There are in the museum upwards of 975 stuffed animals and 3,478 birds. The collection of shells is the most beautiful and most important which exists. After the death of M. Westerman in 1890, the directorship of the Society was conferred upon Dr. C. Kerbert, who was formerly conservator of the aquarium. * * * * * The fee for admission to these large Gardens is one gulden. There are no less than fifty different houses or pens, besides the aquarium (one of the finest in Europe), and four museums.