In "Abhaiidlungen des deutschen Seetischerei-Vereius'", vol. VH, 1002, 

 Schiemen:: writes about tlie fishes from the Holsatias cruise in tlie Baltio 

 Sea. In "Wissenschaftlkdie Meeresuntersuchungen, Neue Folge", vol. VIII, 

 Kiel 1904, C. Apsfein writes in "Junge Butt (Schollen, Pleiironrcfes plnfcssn) 

 in der Ostsee" about tbe youug plaice wbicli ol late yeai's bave becn gatbered 

 on the shores near Kiel. In "Wiss. Meeresunt., Neue Folge", vol. VI, Heft I, 

 1904, Ehrcnhnum and Strodtmann write about "Eier und Jugendforinen der 

 Ostseefische", gatbered as pelagio eggs and young fisli on tbe l'oseidon's ter- 

 minal cruises in tbe Baltic, and A. Krilger, ultimately, writes "tn^er die Ver- 

 breitung junger Scbolleu an der deutsehe Ostseekiiste 1903", "Mitt. des deut- 

 scbeu Seelischerei-Vereins", No. 12, 1903. 



These four publications, wbicb are all closely counec-ted witb "Tbe Inter- 

 national Exploration of tbe Sea ', give a report also of what bas formerly been 

 publisbed about tbese matters, more particularly the works of Ehrenbanm 

 and Strodtinann. I sball refer to these publications, therefore, and bere only 

 try to give a brief summary of the main points of the whole matter, and 

 to state wbat is known already, basing my statement partly on tbese [lub- 

 lisbed papers, partly on un])ublished investigations of tbe Danish Biologicai 

 Station. Finally, I sball meutiou certain facts to wbicb we ought to jiay 

 particular attention in future, if we want to gain a clearer insigbt into tbe 

 matter. 



To avoid misunderstaudiug, I sball premise the observation that the 

 "Baltic Sea", bere, stands for tbe waters soutb of tbe Danish islauds and 

 eastward; the "western part of tbe Baltic Sea" for the waters soutb of tbe 

 Danish islands as far as tbe line Gedser-Darserort; the "Baltic Sea proper" 

 is the sea east of tbis line and soutb of the isle of Saltholmen, near Copen- 

 hagen; while the "Belt-Sea" stands for tbe waters around Samsø, the Great 

 and the Little Belt, and the western part of tbe Baltic (Cmp. tbe map, p. 8). 

 Tbese limitations I have already used for many years, for hydrograpbic- 

 biologic reasons, and I consider them, in tbis respect, suitable and defen- 

 sible. (Cmp. "Kanonbaaden »Hauchs« Togter".) 



On the Stock of Plaice in the Cattegat, the Belt-Sea, 

 and the Baltic Sea proper. 



If we will take some pains to catch plaice of differeut sizes in the 

 Cattegat, as a rule also in the Belts, partly by employing fishing-apparatus 

 witb small mesbes, partly by fisbing on deep as well as on low water, it 

 will be proportionally easy to get them in great numbers and of sizes like 

 those represented in table I, columns I & II. We see here, among others, 

 the smaller ones, the fry of tbe year (the 0-group), 1 — c. 4 iuches (272 — c. 

 10 ctm.) in lengtb, in great numbers. Tbese little fisb are caught on low 



