. Nature sketches in temperate America, a series of sketches and a popular account of insects, birds, and plants, treated from some aspects of their evolution and ecological relations . y this resemblance to the veins. The resem-blance of the walking-stick to the venation of the oak can bedemonstrated in quite a striking manner, if the main medianvein with two pairs of laterals are cut out carefully with apair of scissors. The result is a fair facsimile of the youngwalking-stick. Of course, in the position which the young walking-sticknaturally assumes in foraging, it does not always accuratel
. Nature sketches in temperate America, a series of sketches and a popular account of insects, birds, and plants, treated from some aspects of their evolution and ecological relations . y this resemblance to the veins. The resem-blance of the walking-stick to the venation of the oak can bedemonstrated in quite a striking manner, if the main medianvein with two pairs of laterals are cut out carefully with apair of scissors. The result is a fair facsimile of the youngwalking-stick. Of course, in the position which the young walking-sticknaturally assumes in foraging, it does not always accuratelylie over the veins of the leaf, for the veins shghtly have found, however, by observations, that if the insectstands at any angle on the leaf, and if he is viewed from below,his resemblance to the veins is sufficient to protect him. Thenearer the position of the body corresponds to the centralvein structure the greater the safety from attacks. The oakis doubtless the most often chosen as the natural habitat ofthe common walking-stick, but I have often found the youngat home on a variety of herbage, shrubs, and small trees, where PROTECTIVE RESEMBLANCE, WITH EXAMPLES. Leavex of Bed Oak. The upper figure shuiiw a young Ualk- iiig-xfic/i protected by its resemblance to reins of the leaf; lower figure a young Round-wing Katydid irhich is green in life, like the vathinfi-stick. and almost invisible against the leaf bar/.r/ronnd. 80 NATURE SKETCHES IN TEMPERATE AMERICA they live on the leaves. This in no way mitigates the specialadaptation of his body referred to, for I have found that hisattenuated form resembles almost as well the leaf veins ofvarious other plants. In the latter part of July, I found on the wild gooseberrytwo very small individuals. These young readily sought theunderside of the leaves when they were rustled. In the accom-panying plate photographic illustration of the wild gooseberrybranch, I have portrayed them on the tapper surface of theleaves, thou
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, booksubjectins
