. Ants, bees, and wasps. A record of observations on the habits of the social Hymenoptera . IMPORTANCE OF SCENT. 259. then twisted as shown in Fig. 19. The bricks and tunnel being also rearranged so that they were exactly in the same direction as before, but the board having been moved, the line d e was now outside them. This change,however, iidnotatalldiscom- Fig. U). pose the ants ; but instead of going, as before, through the tunnel and between the rows of bricks to a, they walked exactly along the old path to e* I then arranged matters as before, but without the tunnel and with only three


. Ants, bees, and wasps. A record of observations on the habits of the social Hymenoptera . IMPORTANCE OF SCENT. 259. then twisted as shown in Fig. 19. The bricks and tunnel being also rearranged so that they were exactly in the same direction as before, but the board having been moved, the line d e was now outside them. This change,however, iidnotatalldiscom- Fig. U). pose the ants ; but instead of going, as before, through the tunnel and between the rows of bricks to a, they walked exactly along the old path to e* I then arranged matters as before, but without the tunnel and with only three pairs of bricks (Fig. 20). When an ant had got quite used to thepath d to e, I alteredthe position of thebricks and food, asshown in Fig. 21, mak-ing a difference of 8inches in the positionof the latter. The antcame as before, walkedup to the first brick, touched it with her antennae, but then followed ner oldline to a. From there she veered towards the food, andvery soon found it. When she was gone, I altered it Fig 20. % d 1 1 1 1 1 e 1 260 THE SENSE OF DIRECTION. a^ain, as shown in Fig. 22 ; she returned afte


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