588 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [50] 



kept the fish which are to serve as propagators, and they are caught 

 when the time for fecundation has come. 



II. — Switzerland. 



11. Neuhausen. — This establishment is located about 300 meters [328 

 yards] from the celebrated falls of the Ehine. It belongs to the canton 

 of Schaffhausen, which founded it in 1877. It is under the superin- 

 tendence of Mr. Moser-Ott. 



The water comes from a spring about 200 paces from the establish- 

 ment, and is carried through a conduit about a meter and a half [5 feet] 

 below the level of the floor. The temperature is not very high, nearly 

 always 7° E. [about 48° F.]. It is not filtered. It rises to the ceiling 

 of the hafcching-house, whence it falls into a long, rectangular wooden 

 basin, from which through vertical pipes it descends into the hatching- 

 room below. To each pipe there are two troughs. These are of wood, 

 about 2J meters long, 40 centimeters broad, and 20 centimeters deep 

 [about 98 x 10 x 8 inches]. They are arranged in couples, each couple 

 having one pipe through which the water flows into the troughs, and 

 one common outlet pipe. The number of troughs is 16. The water in- 

 side the troughs reaches a height of about G centimeters [2J inches] 

 during the hatching of the eggs, which are placed on frames of var- 

 nished iron wire, but after the eggs have been hatched the height of the 

 water is reduced to 3 centimeters [1^ inches]. There are also in use 

 small wooden troughs 80 centimeters long [3LJ- inches]. In the hatch- 

 ing-room, 10 meters long and 7i meters broad [about 33x25 feet], there 

 is also a large tank for live fish. 



The only kinds of fish raised at Iseuhausen are trout, salmon, and 

 Thymallus, with the view to placing them in the Ehine, on the account 

 of the canton ; but a small trade is also carried on, principally in fecun- 

 dated salmon eggs which have not yet become embryonated. 



There are two small ponds for keeping trout, especially males, which 

 are to furnish the material for reproduction. 



In the Neuhausen establishment about 500,000 eggs can be hatched 

 at one time. 



12. Dachsen. — On the opposite bank of the Ehine, a little farther dis- 

 tant from the falls, there is the establishment of Dachsen, on territory 

 belonging to the canton of Zurich, which founded it in 1875, but re- 

 duced it to its present condition in 1881. 



It is under the management of Director Asper, of Zurich. The water 

 comes from springs close to the establishment and is collected in a res- 

 ervoir, whence through a pipe it Hows into the hatching-house. It is 

 not filtered, but the end of this pipe has a grating to prevent any mud, 

 leaves, &c, from entering. In winter its temperature is 5° to G° E. 

 [43^° to 45i° F.], and is somewhat higher in summer. Inside the room 

 the pipe conveying the w T ater rises vertically from the floor and flows 

 into a canal in the centeiyconstructed of masonry, and raised about 2 



