The Common Eel 
January, while in the Tay district it is about the 20th of April. On 
299 
12th June 1909 I saw large numbers of eel fry running up the Tay 
and side streams, which run lasted well into October. I also noticed 
them running up the river Allan, a tributary of the Forth, during 
Noyember. The Forth District Fishery Board have lately erected a 
fish-pass here, and during a recent visit I found the river in flood. 
Owing to a part between the fish-pass and the existing bank of the river 
not having been properly filled in, hundreds of eels got up into this 
and could proceed no farther. The superintendent and I measured a 
number and found them to be about g inches in length. There is 
little doubt that this is the average length attained during their first 
season. Of course there may have been others of a larger size 
lurking in the pools below, waiting for more favourable conditions, but 
none came under our notice. 
