164 TiMEHRl. 
an one as a sloth, should have got accustomed to such a 
course of attion, and should eventually initiate it, might 
have been simple enough, if it had taken place at or 
near sundown, for the lessening of light would be a 
sufficient reminder of the a6l ; in this case, however, it 
was always early afternoon. Moreover, the animal was 
at first always lifted bodily and carried to the box, so that 
it had of itself recognised a separate method of reaching 
the place, which it had fixed in its mind — a method 
which was a laborious one to it since it had to clamber 
past quite awkward sets of objecls for climbing. 
Soon afterwards it quite suddenly dropped the habit, 
when it found that another sloth (Bradypus tridaclylus) 
was always placed in the same box. And this is striking 
too, owing to the fa6l that it had never found this other 
sloth there when it got to the box in the afternoon, 
since its chamber-mate was never put in till just upon four 
o'clock. It had therefore arrived at the association of 
something unpleasant with this particular box, and had 
remembered it so as to lead to its avoidance when its 
usual time for retiring arrived. Whether it would equally 
have objected to the presence of another sloth of its own 
species, we had no means of determining; but it never 
revived the habit it had begun, even after the death of 
the other sloth, when it had always to be put in as at 
first. 
Position of the Caruncle and Method of Song of the 
Bell-bird. — A good deal of misconception prevails as 
to the position of the caruncle in the bell-bird (Chasmo- 
rhynchus niveus). Ordinarily it is stated that during 
the utterance of the notes of the bird, this appendage 
