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the variations were in accord with local variations of habitat. 
I then wrote a statement of the whole matter and sent it to 
Professor Harker. He was most kind, and spent several hours 
going through it with me, and showing me how to arrange it 
scientifically. Mr S. 8. Buckman also looked over the M.SS. 
This paper appeared in the Zoologist, for July and August, 
1890, and was quoted by the Globe, and the Pall Mall Gazette. 
I have read very carefully the following works, and have 
concentrated in a ledger the whole of the information upon my 
subject which they contain. 
It is impossible to become acquainted with the whole 
literature of the subject: this is infinite; and the greater part 
of it absolutely worthless. It often consists of nonsense, 
_ which describes how some bird, say a lark, sings; how it soars 
on eager, or some other kind of wings; and how it sings to its 
_ loving mate; but the story never relates how, in early spring, 
the lark concludes his song with long-drawn whistled notes, 
which are almost exact, though prolonged, reproductions of the 
call-notes of the young, and which therefore suggest that the 
song is then a call to the mate; it does not say that the lark 
flies during song, more often in early spring than when the 
young are hatched—after which event the song is frequently 
uttered from the ground; nor are we told how the lark imitates 
_ more than any other bird the songs of its frequent companions, 
_ the yellow bunting and common bunting, and even the bleat 
of the sheep. These things are not mentioned; we are told 
instead that the little bird is full of admiration for the dawn: 
4 so he may be, but he also utters a chattered song when he 
fights. 
The works which I have studied are these: ‘“ Animal 
Intelligence,” by Komanes; Bechstein’s “Natural History of 
Caged Birds”; “‘The Birds of Sherwood Forest,” by Sterland ; 
“Birds of Herefordshire,” by Dr Bull; “Birds of Middlesex,” 
by Harting ; “A Familiar History of Birds,” Edward Stanley; 
“The Expression of the Emotions,” by Darwin; Sir W. 
_ Jardine’s “Birds of Great Britain and Treland” ; ‘‘Our Rarer 
Birds,” by Charles Dixon; Morris’ “ History of British Birds,” 
