Swimming storage-boxes are extraordinarily well suited for anall fisheries. These 

 boxes are constructed as follows: strong wooden frames are covered outside with wire 

 screen. The inside walls and bottom receive a lining of thin vertical standing laths. 

 A cover prevents the disappearance of the fishes, two carrying arras on each side permit 

 a convenient transportation, and setting on poles (Fig. 58). If the storage-boxes are 

 covered with fine mesh screen or with perforated sheet metal, then they can also be used 

 for storing sorted brood. These storage boxes can be put everywhere in the water, sus- 

 pended, standing or swimming. In ponds it is best to anchor them in the water current 

 in front of the sluice. 



Fig. 58. Swimable stora^-e boxes, which can be used in any desirable 

 location for the temporary storage of fishes. 



Not only with the fishing out but also later, the storage containers are indispensable 

 for the pond fishery, if the yields right at the pond are not to be deposited at every price. 

 In the carp pond fishery where the main seasonal business is done around Christmas and New 

 New Year, and the fishing out must be done in October and November, a storage establish- 

 ment for larger fisheries is roost indispensable. For the temporary storage of sensitive 

 stock fishes and for prolonged storage of table fishes, "earth reservoirs", which are 

 nothing else than small ponds (Fig. 59), are still always the most suitable. 



If they are also to be used for fishing out' in winter during ice conditions it is 

 reconnended to build a pole structure (see Fig. 60). Reservoirs, in the narrower sense, 

 are formed by lining the bottoms and walls of more strongly flowing "ponds" of only a 

 few square meters area, with wood, stones or smooth cement. Or else trenches, which can 

 be suitably supplied with water and flow through the entire extent, are lined on the 

 bottom and sides. The linings must always be completely smooth, and cement is suitable 

 only when it has been completely smoothed by coating it with "inertolan" or other agents. 

 Obviously, such reservoirs can also be erected partly or entirely above the ground (see 

 Fig. 59). The outflow of the reservoirs, like with the pond, is best regulated by means 

 of sluice boards (see Chapter II), which are placed in a cut of the one narrow wall 

 opposite the inflow. With smaller reservoirs the outflow can also take place by means 

 of a horizontal lying pipe on the bottom. On this pipe and in the reservoir itself, is 

 attached a turned up rectangular-bent zinc pipe which regulates the water level by turn- 

 ing it up or down. Frequently storage trenches are not only lined with wood, but they 

 are also provided with covers, roofs and fence enclosures and are divided by jjartitions 

 into many sections for separating the sizes and kinds (Fig. 59). All fixed and permanent 

 reservoirs must naturally be erected where they can be protected, by continuous con- 

 venient supervision, against robbery by fish thieves. 



179 



