33 



impeded by a soft bottom filled up with vegetation. At length we found 

 a clean place, aud tbere the seine immediately gave 820 plaice, many more, 

 consequently, than in the spring. 



It seems, therefore, that there are everj' year immense quantities of fry 

 in Nissum Bredning, but that only part of this fry goes deeper into the 

 fjord. Tlie remaining part stays during the summer in the Bredning, without 

 growing very much ; or, as it has been proved by labelling with bone buttons, 

 it emigrates again to the German Sea. Nissum Bredning is like a huge 

 pound-net, placed in the German Sea to fish for the fry of flatfish, and witli 

 the same peculiarity as the old-fashioned pound-net: if it is not tended pretty 

 constantly, the fish go out of it again. The greatest trouble is taken to 

 gather the spawn of useful fishes in the fresh water; then to fertilize and 

 hatch it; then with great pains it is bred, and may now be sold to be 

 placed in suitable waters. This is all right. But wheu we have in oue part 

 of the Limfjord a breeding-pond of more than 20,000 Tdr. Land, which an- 

 nually fills itself with 1 and 2 years old fry, and in another part, at a 

 suitable distance from it, with excellent communication by water, several 

 square miles of large growing-ponds which are in need of fry, then it is 

 sad to see that these oonditious, on account of legislative difficulties, cannot 

 be made useful to any extent worth mentioning; particularly as we do not 

 know how long the conditions will remain as they are. If the Thyborøn 

 Canal closes, then it is all over. With the present prices of plaice a well 

 arranged transplantation would give a very large annual income in the Limfjord. 



On the Sharks in Danish Seas. 



It has long been a well-known faet that the Piched Dogfish (Acanthias 

 vulgaris) at certain times of the year is exceedingly common on the western 

 shores of Jutland. H. Krøyer has thus seeu 11,000 of them landed at Agger 

 in one day. On August 11., 1900, 700 hooks baited with worms and pieces 

 of plaice were set, with the assistance of S. S. Vestkysten (Captain Mortensen), 

 on 20 fathoms of water on the JydsJce Rev, where the fishermeu in February 

 1900, on the indication of Capt. Mortensen, had set hooks and caught 

 codfish and halibut up to 100 Ibs. a piece. The result, however, was now 

 that the hook-line, after the lapse of one hour, was torn asunder in two 

 piaces, so that we got only 200 hooks home, viz. those that were nearest 

 the buoys. On these 200 there were 1 haddock, 1 grey gurnard, but 15 

 pieked dogfish and 1 taper (Galeus vulgaris) of 38 Ibs. My fishermen had 



