UDO == RAPPORT 1904—05 ANNEXE G 
In addition to the experiments carried out in 1904, I have also had at my 
disposal the earlier results of the English marking experiments during the current 
year. Further work has been done in the transplantation of small Plaice to the 
offshore grounds, and a large number of recaptures has already been reported, 
\ viz., 255 out of 1,462 fish transplanted. These new experiments have confirmed 
» and extended the results shown by the experiments of 1904, especially as regards 
the different rates of growth prevailing on the Dogger Bank and coastal grounds 
respectively. 
Marking experiments have also been carried out by several countries on 
other species of fish, viz., Soles (Solea vulgaris), Turbot (Rhombus maximus), Brill 
(Rhombus laevis), Lemon Sole (Plewronectes microcephalus), Dab (Pl. limanda), 
Flounder (Pl. flesus) and Rays (especially Raia clavata), as well as upon various 
fishes such as Cod (Gadus morrhua), Haddock (Gadus aeglefinus) and Latchet 
(Trigla hirundo). 
Successful results have been reported with regard to most of these species, 
although the experiments will require to be extended considerably before the facts 
will admit of comprehensive treatment. Data have been received with regard to 
these experiments from Holland, Belgium, England and Scotland. 
II. Trawling investigations 
The number of hauls of the large trawls during 1904, concerning which I 
have received particulars, amounts to 780, — a figure which indicates an increase 
in this branch of the work as compared with 1903. Details are provided in the 
accompanying table, which also shows the extent to which the trawling investiga- 
tions have been distributed through the various seasons of the year. 
Table Il, showing the number of hauls with the commercial trawls (50 ft. and 90 ft. otter 
trawls and 40 ft. beam trawls) of which particulars concerning the sizes and numbers of 
Plaice (P. platessa) caught have been forwarded to the Convener 
: Months ; Months 
Year| Country Total} Year, Country Total 
TH) 1V-VI |VI-IX | X-XIL | T-IIE| 1V-VI |VII-IX | X-XII 
1903| Sweden... |... | ... | 16 | ... | 16 11904 Sweden... | ...| ... | 97 9 | 36 
Denmark .|/ 23 | 92 | 20 | 70 | 135 Denmark .| 34) ... | 12 | 19 | 6 
| Germany .| 15 |: 3 38 N 56 Germany .| 25 98 er vee) |||) 2375) 
.| Hollande. .| 18 | 9 14 | s| 49 Holland) | 17) 15) 17 | 415 
| England... | 31 | 65 | 85 | 45 | 296 Belgium ..| 3) 21 | 13 | ... | 37* 
Scotland..|/...| 53 | 62 | 63 | 178 England .. | 58) 42 | 124 | 72 1296 
A Scotland... | 79| 65 67 | 29 11940 
Totals... | 87 | 152 | 235 | 186 | 660 Totals... |216| 171 | 960 | 133 |780 
*) Partikulars of the German and Belgian experiments during the latter part of 1904 not yet received. 
