Encouraged by this result, the necessary fuuds were granted in 1905 by 

 the Minister of Agriculture for a larger experiment in obstruction of the passage; 

 in the dark portion not obstructed it was proposed to set a uumber of eel-traps to catch 

 all the eels, which would otherwise pass outside in the deep water (13 fathoms). 



For this experiment I chose the Little Belt between Funen and Fænø, 

 and a report on the matter was sent in some time ago. 



Tilis experiment was without result in the main, as the easterly winds 

 drove the eels between Fænø and Jutland and the submarine apparatus with the 

 50 electric lamps had consequently too few eels to work upon. 



In the same autumn, 1905, a second experiment was made with acetylene 

 lamps to stop the migration of the eels from Thorsminde (Nissum Fjord), but this 

 experiment was also without result. The various difficulties encountered, the clos- 

 ing of the mouth and later opening at another place etc, have but little interest 

 in this connectiou. 



Various technical experiences were gained in this year, 1905; these resul- 

 ted in 1906 in the constructiou of a light-projector with aceton-acetylene, which 

 only costs some few hundred kroner and is thus much cheaper thau electricity and 

 the acetylene lamps used in 1905, and which further is portable and easy to use. 

 From a purely technical point of view this was a great step in advance. Mr. 

 Schrøder, engineer in the Danish Lighthouse Board emplo}', was my technical 

 adviser in this matter. 



So much was gained however by the first experiment in 1905 that the 

 public interest was awakened ; the experiments were discussed and reported ou in 

 the newspapers, and the fishermen became afraid that those of them who fished 

 north of the lightobstructiou would get uo eels, as these would be caught or 

 stopped in their migration; and it is certain that if this method of fishing with 

 lights becomes generally used, it will naturall}' be of advautage at various piaces 

 to some to the disad vantage of others; but every new method of procedure 

 does the same, and the main thing — greater receipts from our country's 

 eel fishery — should therefore not be lost sight of. The iutroductiou of the 

 eelseines caused considerable trouble and yet they have brought the country a 

 good deal of money. 



Further instances also appeared to throw light upon the matter, and 

 almost all supported the view that light (i. e. artificial light) has some influence 

 on the migration of the eels. An old experience that the eel does not like to pass 

 over light stems of trees was brought forward; a fishermeu tried to spear the sil- 

 ver-eels duriug their passage from Kilen by placing himself at night in the outlet 

 at Kilen with a flare-light, but the attempt failed as uo eels appeared. Another 

 had taken nothing in his eel-traps outside Fredericia harbour so long as a large 

 steamer lay there and let its electric light shine out during the night etc. Lastly, 

 a note appeared in the »Fiskeri-Tidende« to the effect, that some fishermen 

 whilst fishing for herring with driftnets had seen several hundreds of silver-eels at 

 the surface in the Great Belt; the eels do not seem to have been afraid however 

 of the weak lanterns on the boat. 



In order to test the new acetylene light-projector and to study again the feat- 



