. Ants, bees, and wasps. A record of observations on the habits of the social Hymenoptera . igs. 12-17 arecareful reductions of large tracings made during theexperiments. Though not absolutely correct in everyminute detail of contour, they are exact for all practicalpurposes. As the ants pursued their way, pencil-mark-ings in certain instances, and coloured lines in others,were made so as to follow consecutively the pathspursued. Experiment 1.—February. On a table communi-cating with one of my nests (see Fig. 12)1 placed uprighta common cylindrical lead pencil \ inch in diameterand 7 inches lo
. Ants, bees, and wasps. A record of observations on the habits of the social Hymenoptera . igs. 12-17 arecareful reductions of large tracings made during theexperiments. Though not absolutely correct in everyminute detail of contour, they are exact for all practicalpurposes. As the ants pursued their way, pencil-mark-ings in certain instances, and coloured lines in others,were made so as to follow consecutively the pathspursued. Experiment 1.—February. On a table communi-cating with one of my nests (see Fig. 12)1 placed uprighta common cylindrical lead pencil \ inch in diameterand 7 inches long, fastened with sealing-wax to apenny piece. Close to the base of the pencil (a) Ibrought the end of a paper bridge (b) leading to theaest, and then placed a shallow glass with larvse at c, DIFFICULTY IN FINDING WAY. 251 4 inches from the base of the pencil. I then put anant to the larvae ; when she had become acquaintedwith the road, she went very straight, as is shown inthe woodcut [Fig. 12). In one case^ at the point E, sh*dropped her larva and returned for another. When Fig. Routes followed in experiment No. 1, as detailed above. A, position of pencil. B, paper bridge. C and D, glass with , point where larva dropped, the opposite arrow and loop markingreturn route. 1,2, 3, 4, comparatively straight paths to the glass5. 5. circuitous route on shifting of glass. * different access to nest she returned on the next journey and was on the glass,I moved it 3 inches, to d, so that the end of the glasswas 6 inches from the base of the pencil. If she weremuch guided by sight, then she would have had little 252 DIFFICULTY IN ;>r no difficulty in finding her way back. Her pathway,however (No. 5), which is traced on the paper, showsthat she was completely abroad; and, after all, she got5>ack to the nest by a different route. Fig. 13.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbees, booksubjectwasp
