12 



in the Limfjord, was of no use; 

 it smelt badly aod the Buccinum 

 would not touch it; Nassa how- 

 ever en ter ed the traps but 

 only in small number. J>esh 

 but unsalted cod seeras to be 

 the best bait of all, but as a 

 matter of faet it is dear in these 

 fjords. To economize with the 

 bait, the split cod, which is 

 otherwise rapidly devoured by 

 the whelks so that the traps 

 catch 110 more, the pieces of 

 spht cod were euveloped in a 

 strong steel wire through which 

 the snouts of the whelks could 

 not peuetrate. The bait could 

 then last for some days in spring 

 and the trap continue to fish; 

 as soon as the water gets warm, 

 however, the bait must be chan- 

 ged almost daily or it will rot. 

 During the latter period the 

 steel wire was given up; but, 

 to keep the bait from the whelks 

 as long as possible, the pieces 

 of split cod were hung by a 

 wire under the roof of the trap, thus away from the bottom. In this way we 

 managed to keep the bait from being eaten too rapidly. In 1909 by means of 

 these traps we were sometimes able to procure sufficient quantities of whelks, often 

 some barreis full; but as we could not look after this whelk fishery constautly, we 

 could not draw any conclusions from our fishing in 1909 as to how many barreis 

 a boat, only occupied in this fishery, can fish in a year. Sufficient information 

 however was obtaiued to serve as a basis for the start of sucli an experimental 

 fishery in 1910. 



A suitable motor-boat, such as is shown in figs. 5 — 7, was procured; it 

 was furnished with a small davit and with a bollard on the motor, as shown in 

 fig. 7, for hauliug up the traps; two fisiiermen from the Limfjord were engaged, 

 partly at fixed wages, partly paid, first 10 later 20 øre for each barrel of whelks 

 of ca. 190 Pd. The fish-exporter Ottesen in Thisted was the corresponding man- 

 ager of the boat, and on the 4th of April 1910 the fishery could begin. 



The boat had ca. 240 whelk-traps at its disposal; they were all put out, 

 but they were not all attended to every day; storms often broke off the fishery. 



On p. 13 a hst is given of the number of barreis of whelks, daily 

 fished from the 5th of April to the 8th of November, on which day I stopped 

 the fishery. 



Fig. 8. 



