I'reface and Summary 4 a 



1. Tlio soutli-easteru ])art of tlie North Sea probably f'onns in itscll' 

 a region for Piaice. Piaice of all ages are founcl lieie, and tliis stock of 

 Piaice seems to be kept iutact withont any considerable exchange witli tlie 

 other parts of tbe Xortli Sea.*) — ji. 9. 



2. The spawn, the floating egg.s, and the young of the Plait'e are found 

 here in great qnantities. The youngest of the fish on the ground are only 

 to be found near the land. Froni here tliey wander ont, and the lai'ger 

 and older they grow the further ontwards they go into the o])en sea and 

 into ever deeper water. — p. 1.3; 361 



3. In the shallowest parts near the sliore from 0—10 ni deep, 

 apart from the youngest Piaice, extremely few large fish are to be found; 

 whereas in the zone from 10 to about 20 m deep there are shoals of 

 Piaice consisting chiefly of fish of the second and third 3'ear, and of 

 medium length from 12 — 19 cm, and of the weight of 13 — 70 gm. Here 

 lie the so-called "Young-fish grounds" of the Danish, German, and 

 Dutch coasts. — p. 17; 59. 



4. In the grounds beyond the 20 m line, approximately to the 30 m 

 line, only very few small Piaice are to be foi^nd; the fish here are mostlj^ 

 of the third and fourth year. Their medium length is about 19 — 24 cm 

 and their medium weight from 70 — 140 gm. At the depth of 30 — 40 m 

 and further out Piaice of the fourtii, fifth and sixth year ara abundant, 

 and tliese have a medium length of 24 — 30 cm, and a medium weight of 

 140 — 300 gm; in addition to these are here, too, the older Piaice of an age 

 up to twenty years and over, and of a length of about 60 — 70 cm. 



The region from about 20 — 40 m deep and more comprises tlie chief 

 fishing grounds of the ßerman Piaice Fisher\-. Here oniv do the 

 sailing-boats fish, and almost only during the summer months. The 

 steamers go beyond this region towards the north and west, and fi.sli in 

 Stimmer and in winter. — p. 17; 59. 



5. The deeper the sea becomes, and the greater the distance from 

 the shore, so does the average size of the Piaice in the hauls increase; 

 while, on the contrary, the number of single fish steadily and considerably 

 decreases. — p. 36 f ; 53. 



6. In winter and in the beginning of the year the average length of the 

 Piaice in the hauls on nearly all the fishing-grounds is lai'ger than in summer, 

 probably becau.se the winter rest of the young makes their capture difficult, 

 and becau.se, too, of the returii of the older fi.sh towards land. — p. 38; 39 f. 



7. At the end of the first year the Piaice of our region reaches 

 a medium length of 7 cm; at the end of the second 12 — 13 cm; at the 



*i At the end of the sentences we put the pages in the pamphlet where the 

 reasonü for the assertions are givea more explicitly. 



