Besides the spring budding, some trees have naturally another budding, which depends upon the influence of their own respective constellations,[2471] a theory which we shall find an opportunity of more conveniently discussing in the next Book but one.[2472] The winter budding takes place at the rising of the Eagle, the summer at that of the Dog-star, and a third budding[2473] again at that of Arcturus. Some persons think that these two buddings are common to all trees, but that they are to be remarked more particularly in the fig, the vine, and the pomegranate; seeing that, when this is the case, the crop of figs, in Thessaly and Macedonia more particularly, is remarkably abundant: but it is in Egypt more especially that illustrations of this vast abundance are to be met with. All the trees in general, when they have once begun to germinate, proceed continuously with it; the robur, however, the fir-tree, and the larch germinate intermittently, ceasing thrice, and as many times[2474] beginning to bud again, and hence it is that they shed the scales of their bark[2475] three several times; a thing that takes place with all trees during the period of germination, the outer coat of the tree bursting while it is budding. With these last trees the first budding takes place[2476] at the beginning of spring, and lasts about fifteen days; and they germinate a second time when the sun is passing through the sign of Gemini: hence it is that we see the points of the first buds pushed upwards by those beneath, a joint marking the place where they unite.[2477] The third germination of these trees takes place at the summer solstice, and lasts no more than seven days: at this period we may very distinctly detect the articulations by which the buds are joined to one another as they grow. The vine is the only tree that buds twice; the first time when it first puts forth the grape, and the second time when the grape comes to maturity. In the trees which do not blossom there is only the budding, and then the gradual ripening of the fruit. Some trees blossom while they are budding, and pass rapidly through that period; but the fruit is slow in coming to maturity, as in the vine, for instance. Other trees, again, blossom and bud but late, while the fruit comes to maturity with great rapidity, the mulberry,[2478] for example, which is the very last to bud of all the cultivated trees, and then only when the cold weather is gone: for this reason it has been pronounced the wisest among the trees. But in this, the germination, when it has once begun, bursts forth all over the tree at the very same moment; so much so, indeed, that it is accomplished in a single night, and even with a noise that may be audibly heard.[2479] CHAP. 42.—IN WHAT ORDER THE TREES BLOSSOM.