120 ANIMAL INTELLIGENCE 
11th day.—Held a saucer containing warm milk under 
the nose of one of the puppies. It took the edge of the 
saucer in its mouth. Another tried to drink the milk 
but did not succeed, its eagerness being in excess of its 
ability to co-ordinate muscular movements. 
The evidence of smell is still very doubtful. 
It is now easy to discern that some are larger and in 
better physical condition than others. 
13th day.—Last night it was observed that the eyes 
began to open. At noon to-day they are not fully open, 
deing held by a thin sheet of tissue at the outer canthus ; 
individual differences are very marked, however, in this 
matter. 
Smell is tested with pieces of cold cooked veal, warm 
fried kidney, and cold cooked salted herring. All, when 
these were put near the nose, licked their lips and moved 
forward and to each side, following the objects evidently 
by the nose. 
They do not wink when the whole hand or a finger 
is moved close before their eyes, but when the eye- 
lashes are touched, or all but touched, they do wink. 
The same reflex follows where the lid or corner is 
actually touched. 
It is very difficult to make out the pupil, and I was 
not able to learn, though I tried day after day, whether 
the iris contracted to light or not. No evidence of the 
existence of vision could be obtained. 
A feather inserted into the nostril causes the head to 
be quickly drawn away. 
Considerable twitching of the muscles is noticed 
when they are asleep. 
There is a tendency to growling in sleep. 
All the movements are better than on the earlier 
days; and for the first time slight taz/ movements are 
noticed, none having been observed during the period 
prior to opening of the eyes. 
