28 



larger bays; tlius it is very rich in Veuø Bay and iu the part from Logstør to 

 Aalborg. 



At most of the piaces in the Lim Fjord the Zostera is long and broad- 

 leaved, which agrees with the generally rich (mud-raixed) bottom, and which is 

 further supported by the faet that the Zostera in Nissum Bredning, where the 

 bottom is sandier and firmer, is shorter and narroAvtr leaved. 



3. Kattegat (fig. 8). Along the east coast of Jutland from Skagen to 

 Mols (Hasenøre) there is a narrower or broader belt of fairly delicate and narrow- 

 leaved Zostera out to a depth of about 6 fathoms, at some piaces, however, little 

 developed and on the other hånd sometimes (e. g. at Asaa and at similar pro- 

 tected piaces) replaced by a vigorous aud broad-leaved one. The belt is broadest 

 between Hals aud Djursland, that is, iu Aalborg Bay; here the Zostera in small 

 patches reaches much further out; there is even a connectiou by patches from 

 the vegetation on the coast to tiie exteusive Zostera meadows on the Læsø 

 south grounds. 



In spite of its wide distribution in the Kattegat the grass-wrack is of but 

 small practical importance there, on account of its scattered mode of occurrence 

 and its feeble growth; from this however we must again except the Læsø 

 south grounds. 



4. The waters between Jutland and Samsø including Aarhus 

 Bay. We have now got to more protected waters and at once tiud a more 

 abuudant Zostera vegetation. In Kalø as well as iu Æbeltoft Vig there is a thick 

 vegetation of Zostera down to a depth of 5 fathoms; but off the points the vege- 

 tation is as elsewhere, poor. Along the east coast of Jutland, from Aarhus aud 

 southward to Endelave the vegetation of large and broad-leaved Zostera spreads 

 more and more, so that it tilis, to the south, almost the whole water between 

 Gyllingnæs and Endelave. Here we fiud the tirst large area with Mud-Zostera, 

 namely between Tunø, the Svanegrund and Endelave to the east and the coast of 

 Jutland to the west. 



5. Little Belt. Concerning the Little Belt I may refer to Dr. Petersen's 

 Chart in Report III of the Biologicai Station. The east Jutland fjords are all 

 greatly covered with Zostera; a poorer vegetation is found between Funen aud 

 Æbelø aud also along the coast of Baaring Vig. South of the area charted by Dr. 

 Petersen, the vegetation along the coast of Funen as along the coast of Schles- 

 wig') is rich and well developed. And in the island-rich waters south of Funen 

 we have one of the large areas for the occurrence of the Zostera; I have un- 

 fortunately but little exact information from there. I eau only say that my general 

 impressiou agrees with Dr. Petersen's chart, which shows a verj' wide distribution 

 of the Zostera in these parts. 



6. Odense Fjord. Copious aud vigorous Zostera vegetation to 3 — 4 

 fathoms dejith; especially iu Midskov Bay. 



7. Samsø Belt. There is a fairly copious vegetation in Stavns Fjord, 



') According to J. Eeinke's atlas (see above). 



