This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... At first the ants stored all of the pupae in the crevice between incline A and stage number one. After that had been accomplished, they began carrying them to the nest. This was conducted at night, by incandescent electric light; all of the other experiments of the series were conducted by daylight. X The pupae were carried up incline C to stage number two, across stage number two to incline if, down incline B to the nest. No pupae were carried down incline A. One pupa was conveyed down incline B, all the others down incline A. One worker ascended incline B to the stage and carried a pupa down incline A. ) One pupa was conveyed down incline B, the remainder down incline A. t All of the pupae were conveyed down incline B. 0 A very large majority of the pupae were carried down incline B to the nest. One pupa was carried down incline A to the nest and several were carried down incline A and stored under the base of the incline. Up to bedtime the pupae had not been carried to the nest. Thus the ants were lost for over 12 hours. In the course of half an hour all of the pupae had been stored in the dark chamber. There they were left, while the workers, one by one, straggled back to the nest. After the lapse of 21 hours and thirty minutes, the pupae were still in the dark chamber. I then removed the dark chamber and placed workers from the nest on the stage. IV. IMPRESSIONS THAT INFLUENCE HOME-GOING ANTS. 1 have endeavored to show that ants find their way home by virtue of something which they acquire by experience and retain; in other words, that they acquire from their environment impressions which influence their home-going. I now propose to examine the nature of these impressions. Most recent students of ants write as though these...