From another apple tree I took the twig shown in Fig. 217. We see at once that it is very unlike the other one. It seems to be two years old, one year's growth extending from the base up to 7, and the last year's growth extending from 7 to 8; but we shall see upon looking closer that this is not so. The short branchlets at 3, 4, 5, 7 are very different from those in Fig. 216. They seem to be broken off. The fact is that the broken ends show were apples were borne in 1896. The branchlets that bore them, therefore, must have grown in 1895, while the main branch, from 1 to 7, grew in 1894. It is plain, from the looks of the buds, that the shoot from 7 to 8 grew last year, 1896. [Illustration: _Fig. 217. A three-year-old shoot and the fruit-spurs. Half size._] Starting from the base, then, we have the main twig growing in 1894; the small side branches growing in 1895; these little branches bearing apples in 1896; and the terminal shoot also growing in 1896. Why was there no terminal shoot growing in 1895? Simply because its tip developed a fruit-bud (at 7) and therefore could not send out a branch; for there are two kinds of buds,--the small, pointed leaf-bud and the thick, blunt fruit-bud. If the branchlets 3, 4, 5, 7 are two years old, the dormant buds--1, 2--must be of the same age. That is, for two long years these little buds have been waiting (if I may use the expression) for some bug to eat off the buds and leaves above, or some accident to break the shoot beyond them, so that they might have a chance to grow; but they have waited in vain. We have now found, therefore, that the little side shoots upon apple twigs often become fruit-branches or fruit-spurs, while the more ambitious branches above them are making a great display of stem and leaves. [Illustration: _Fig. 218.--A fruit-spur which has borne six apples. Half size._] But will these fruit-spurs bear fruit again in 1897? No. The bearing of an apple is hard work, and these spurs did not have enough vitality left to make fruit-buds for the next year; but as they must perpetuate themselves, they have sent out small side buds which will bear a cluster of leaves and grow into another little spur in 1897, and in that year these new spurs will make fruit-buds for bearing in 1898. The side bud is plainly seen on spur 5, also on spur 4, whilst spur 7 has sown a seed, so to speak, in the bud at 6. It is plain, therefore, why the tree bears every other year. III.