ant to stop when it encounters with other ants

At a meeting with ants ants ants was actually more like a human being bumped. Ants that collided head on the spot they're actually communicate between each other. A researcher or scientist named Theodore Christian Schneirla at the University of New York City had conducted experiments on ants communicate with each other by taking an ant is taken and then put into place that contains the food.
Then other ants put in place that contains enemy ants. Then the ants are in the observed behavior as well as the ants that ran into the other ants in the way when communicating.


From the research it Schneirla mention that the chemicals released from food or from enemy ants were attached to the ants. So, when he met with his friend ant, the ants would greet each other (touching). Well, with this greet each other chemicals from the ants would tell his friend (via an antenna on the head ant) whether there is food in the surrounding environment or there is an enemy.


Well ... so the question about the reason Ants Ants Stopped When Meet Other? have missed the conclusion is when ants meet with other ants these ants doing clashing interaction with the existing antenna on his head to warn other ants if there are friend or foe. What would you say?