Page:Popular Science Monthly Volume 5.djvu/152

140, and, although but a new-comer on our shores, already in Connecticut it appears in a variety fixed and well marked. Incipient doubling is not uncommon, and now and then may be found a thalictrum or a saxifrage full-double. From the wild-strawberry (Fragaria Virginiana) has diverged a well-marked variety called the F. Illioensis. From this has diverged still another variety found by Mr. Gillman in great abundance on the shores of Lake Superior, far away from the influence of the gardener—a variety of a variety.

And now, as the visitation of insects, as more or less light, more or less heat, more or less wind, more or less room, more or less soil, are known to reflect changes in the color, size, form, and even structure



of plants, if the vegetal world has come to be what it is through the action of these secondary causes, we should find reminiscences of a primitive, undifferentiated type.