INS'J'INCT AND REASON I?f DOGS, ETC. 233 



Then there remains this query: in this Irish 

 river, as the full-grown eel only moves by night 

 and when it is dark — they will not run when the 

 moon shines — do the eels not return from the sea 

 when Paddy has whiskied himself to sleep, 

 unseen by any fisherman in their thus concealed 

 and noiseless use of the ladder ? My own opinion 

 is, that, if the eels that have left the river and 

 tumbled over a high fall into the sea, do come 

 back, they do so in dark nights by the ladder, 

 imless they possess the power of gliding up the 

 fall of from twenty to thirteen feet. I would 

 not vouch for the fact that eels are unable to do 

 so, after what I have known the common and 

 smaller fish of the English rivers do, by falls 

 of water, — including the roach, the gudgeon, and 

 that powerless-looking, big-headed little fish com- 

 monly called the '' miller's thumb." 



When a coop with rare young fowl is placed 

 by the side of a considerable sheet of water, with 

 a small enclosure of galvanized-wire netting in 

 front of the coop, enclosing some yards of the 

 shallows of the pool for the young, in this instance 

 of the Carolina or wood-duck from America, to 

 swim in, is the following an instance of instinct 



