BIOGEAPHY. 55 



replaced the door, fastening it with two little hinges and 

 a hasp, and bored a hole in it about an inch in diameter. 



In fulfilment of his expectations, the very bird which 

 he wanted soon discovered the locality, examined it care- 

 fully,and then built in the chamber so thonghtftilly provided 



for it. I was never at Walton Hall while the bird was 

 sitting, but have often seen the nest. 



The last of these sketches represents a singularly in- 

 genious combination of accommodation for man and bird. 

 The trunk of an old oak-tree has been hollowed out, and 

 the interior is divided into two stories. 



In the upper there are nesting-places for birds, especially 

 for owls, and in the lower there is a seat where the occu- 

 pant can remain unseen. It is placed on the brow of the 

 hUI which borders the lake, and is so arranged that not 



