[MILLS] PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 2453 
4th day.—Holds its head somewhat differently from B. 
When touched turns reflexly towards the source of the stimulus. 
11th day.—B has in twenty-four hours been the subject of a phe- 
nomenal growth and advance in physical development generally, so that 
it now seems days in advance of C. 
16th day.—Very pugnacious when approached. 
20th day.—Strikes vigorously with beak and wings. It desists when 
when placed in the hand, but is as bad as ever when put down again. 
22nd day.—When striking at me it got sawdust into itsmouth. This 
was promptly ejected, however. 
28th day—Out of the nest and flying about as the other one. 
SHORT Facep TumMBLERs, D AND E. 
Unless otherwise stated the notes refer to D. 
1st day.—The eyes are fairly open. 
'The opening of the ear is very small. 
2nd day.— can sit up fairly when it does not attempt to move, but 
if it does it sprawls about badly. The head seems too heavy and its neck 
too long ; but it is a vigorous specimen of this somewhat delicate variety. 
3rd day.—When the wing is pricked the head is dipped downward 
and forward somewhat forcibly, but not towards the side stimulated. 
6th day.—The head and neck are well supported. 
The eyes are still held open only part of the time. The parents sit 
over the birds at eventide though very hot in the loft. 
7th day.—The eyes held open almost all the time. Does not wink even 
when the eyes are touched. 
10th day.—Much growth and general advancement evident. 
13th day.—The bird pecks when I put my hand near it. The growth 
of feathers is just now slight, but that of the body rapid. 
14th day.—Still more inclined to peck, ete. Can see growth in 
twenty-four hours. 
15th day—Pecks vigorously. I placed it on one hand, and on extend- 
ing the other towards it the bird no longer pecks, but uses voice, beak, 
etc., as when its parents approach to feed it. 
16th day.—After being on my hand it is placed back in the nest and 
then behaves as noted above on the fifteenth day. 
17th day.-—It is now growing rapidly and feathering fast, so that the 
colour can be made out. Though quite pugnacious before, when taken 
in the hand it grows quiet. 
19th day—The bird is now about one-third feathered. When ap- 
proached it uses beak and wings as before, but a touch seems to quiet it. 
20th day.—The most pugnacious it has yet been. 
22nd day.—Still more pugnacious. 
