31 



they would grow as quickly as they used to, even though the number in 

 this way was doubled. Tlie Fishery Union of Thisted fetclied the plaice 

 in little fishing-smacks. 



This then was a sort of combination of scieutific investigation and 

 practical development of the fishery at Thisted. 



In tlie western part of Nissum Bredning 



the 1. haul gave 1900 plaice. 



— 2. — — 2700 - 



— 3. — — 1900 — 



— 4. — — 450 — (Took hold twice.) 



— 5. — — 2200 — 



— 6. — — 800 — 



— 7. — (full of Furcellaria.) 



— 8. — gave 1900 plaice. 



— 9. — — 1300 — 



— 10. — — 2200 — 



— 11. — — 2400 — 



— 12. — — 1600 — 



Farther into the Bredning, with Nørre Nissum Church in SW 

 '/o S, and at a distance of 4'/, miles, we took in the first haul 2100, in 

 the seeond 3300, in the tliird 2560. Our seines soon proved to be too wide 

 in the meshes to retain the smaller plaice. For there are here the fish of 

 two years, those which are one j^ear old and ouly 2 — S^/o inches long, and 

 the next from c. 4 — 8 (9) inches. Only very few fish were more than 10 

 indies, yet so many tliat the fishermen could fish for them. The fish counted 

 in the above hauls, were chiefly fish over 4 inches. Those under one year 

 of age were not caught, because they went through the meshes of the large 

 seine which was used for the counting, and whose meshes were 3 inches 

 wide. After a short bag of net-work, with smaller meshes, had been attached 

 to the farther end of the seine, the number of fish which were caught was 

 somewhat increased, so that the average number of plaice in 19 hauls with this 

 was 2140 per haul, chiefly fish 2 years old, and the few larger oues. 



I calculate that the seine, on an average, fishes over an area of c. 4 

 Tønder Land'-') ^-ith 300 fathoms of line. There must, cousequently have 

 been nt kast 500 plaice on each Td. Land. As there are c. 19,000 Tdr. 

 Laud in Nissum Bredning outside the 3-fathom curve, there must have 



•) 1 Tønde Land (Danish measure) = c. 1^ ,, acre. 



