298 Netherlands. 



salar Salmon, 4 years old. (2) 3 years ; (3) 2 years ; (4) 1 year ; (5) 9 months ; (6) 6 months ; 



(7) 3 months ; (8) If months ; (9) 3 weeks ; (10) 1 day ; (11) breaking shell. (5) Salmon 

 from California (salmo quinctf), in different sizes, with the young fish (in spirit), viz. (1) 

 Salmo quinat, Californian Salmon, 4 years old ; (2) 3 years ; (6) Trout of different size, 

 and young fry of the same; second brood from " Zwaanspreng ' (in spirit) viz. Trutta 

 Lucustris (1) 3 years ; (2) 2 years. Trutta fario, Brook Trout (1) 3 years ; (2) 2 years. 

 Ditto, Common Trout, (1)3 years; (2) 2 years; (7) Trutta trutta, Salmon Trout, 2 years. 



(8) Californian Trout (salmo fontinalis), viz. Salmo fontinalis, American Trout, 2 years. 

 Ditto, 1 year old. (9) List of Eggs or Ova : Salmo salar. Salmo quinat. (1) Trutta 

 lacustris. (2) Ditto, fario. (3) Ditto, Trutta. (4) Ditto, fontinalis. All the fish named in 

 this list were hatched and reared at the Establishment Zwaanspreng at Apeldoorn in the Nether- 

 lands. Established 1878. The following reproductions have been obtained, viz. Salmo 

 quinat, Salmo fontinalis, Trutta fario and hybrids. 



DIVISION XXXVI. 



61. MAJU, Amsterdam. (Microscopic specimen, showing the gradual 

 development of the Salmon.) The Embryo (1) just appearing. (2) Aged four days. (3) Seven 

 days old. (4) Twelve days. (5) Sixteen days. (6) Twenty-five days. (7) Thirty-five days. 

 (8) Forty days. (9) Forty-three days. (10) Kemarkable aberrations. 



DIVISION XL. 



62. DUTCH SOCIETY FOR PROGRESS AND IMPROVEMENT 



of Oyster Culture, Bergen-op-Zoom, Province of Zeelund. A Collection (in liquor) of the 

 Fauna of the Kiver Schelde (Zeeland), collected and prepared by Dr. P. P. C. Hoek and Dr. 

 K. Horst of the University of Leyden. 



63. ZOOLOGICAL SOCIETY :OF THE NETHERLANDS. (Es- 

 tablished at Kotterdam, May 15, 1872. Statutes approved by Eoyal decree of March 14, 

 1876, No. 32.) (1) A. Specimens in Alcohol. Collection of Fishes belonging to the Dutch 

 Fauna and collected along the sea-coasts of the Netherlands, and in Dutch rivers, lakes, &c, 

 Collection of invertebrate Animals, belonging to the Dutch Fauna. (2) B. Model of the 

 Zoological Station of the Zoological Society of the Netherlands. The building was constructed 

 in 1876, and has been used for zoological investigations during the summer months of seven 

 consecutive years. The building was taken down every autumn to be rebuilt towards the 

 summer of the following year. The station was erected at the following places respec- 

 tively : In 1876, Helder ; in 1877, Flushing; in 1878 and 1879, the Island of Terschelling ; in 

 1880, Nieuwediep; in 1881 and 1882, Bergen-op-Zoom. (3) C. Large Diagrams. The 

 Interior of the Entrance to the Station. The Appparatus for circulating Water in the 

 Tanks, as they are in use at the station. Horizontal and Vertical Sections of the Station. 

 Representation of the Anatomy of the Oyster, in six figures, according to the latest 

 investigations made in the station. Representation of the Embryology of the Oyster, in ten 

 figures, according to the latest investigations made in the station. (4) D. Publications of the 

 Netherlands Zoological Society. The Journal of the Society. Vol. I.-V., 1874-1881. Vol. 

 VI. 1, 1882. Supplementary Vol. I. of the Journal. First Part. Report of the investiga- 

 tions relating to oyster-culture. (Dutch and French text.) First-Seventh Annual Report 

 of the Zoological Station of the Netherlands Zoological Society, 1876-1882. (5) E. A 

 Collection of books and Papers, published in the Netherlands by Dutch authors, important 

 for the Fauna of the Dutch rivers and seas. 



DIVISION XLVI. 



64. DUTCH SOCIETY FOR PROGRESS AND IMPROVE- 

 MENT OF OYSTER CULTURE, Bergen-op-Zoom, 'province of Zeeland. (a) Tiles 

 with adhering Spawn. (6) Living Oysters, (c) Sundries. 



POLLEN, DR. FRANCOIS P. L., Scheveningen. V. Conchylies 

 from Madagascar. (1) Cytherea lineolata, Sow. (2) Tapes, geographica, Chemn. (3) Circe 

 divaricata, Lam. (4) Area maculosa, Reeve. (5) Area Sp. (6) Area velata, Sow jeune. 



"LAND AND WATER" says- 



" Messrs. BENJAMIN'S Establishment is quite a. 

 Tailoring Museum. Sportsmen and Sportswomen ^ in 

 particular can find everything here in the way of Sporting 

 and Outdoor Apparel." 



ULSTER HOUSE, CONDUIT* STREET, W- 



