ANIMAL INTELLIGENCE. 
*6 
ants were generally carried into the nest, if they were ants 
belonging to that community ; if not, they were thrown 
overboard. This care shown towards intoxicated friends 
appears to indicate a dim sense of sympathy towards 
afflicted individuals; but that this emotion or instinct 
does not in the case of these species extend to healthy 
individuals in distress seems to be proved, not only by the 
experiments of burying already described, but also by the 
following : — 
On Sept. 2, therefore, I put two ants from one of my nests 
of F.fusca into a bottle, the end of which was tied up with 
muslin as described, and laid it down close to the nest. In a 
second bottle I put two ants from another nest of the same 
species. The ants which were at liberty took no notice of the 
bottle containing their imprisoned friends. The strangers in the 
other bottle, on the contrary, excited them considerably. The 
whole day one, two, or more ants stood sentry, as it were, over 
the bottle. In the evening no less than twelve were collected 
round it, a larger number than usually came out of the nest at 
any one time. The whole of the next two days, in the same 
way, there were more or less ants round the bottle containing 
the strangers; while, as far as we could see, no notice whatever 
was taken of the friends. On the 9th the ants had eaten 
through the muslin, and effected an entrance. We did not 
chance to be on the spot at the moment ; but as I found two 
ants lying dead, one in the bottle and one just outside, I think 
there can be no doubt that the strangers were put to death. 
The friends throughout were quite neglected. 
Sept. 21. — I then repeated the experiment, putting three 
ants from another nest in a bottle as before. The same scene 
was repeated. The friends were neglected. On the other 
hand, some of the ants were always watching over the bottle 
containing the strangers, and biting at the muslin which pro- 
tected them. The next morning at 6 a.m. I found five ants 
thus occupied. One had caught hold of the leg of one of the 
strangers, which had unwarily been allowed to protrude through 
the meshes of the muslin. They worked and watched, though 
not, as far as I could see, with any system, till 7.30 in the 
evening, when they effected an entrance, and immediately at- 
tacked the strangers. 
Sept. 24. — I repeated the same experiment with the sam© 
nest. Again the ants came and sat over the bottle containing 
the strangers, while no notice was taken of the friends. 
