§ 194. When, in the course of the process above sketched out, there has arisen such community of nutrition among the fronds thus integrated into a series, that the younger ones are aided by materials which the older ones have elaborated; the younger fronds will begin to show, at earlier and earlier periods of development, the structures about to originate from them. Abundant nutrition will abbreviate the intervals between the successive prolifications; so that eventually, while each frond is yet imperfectly formed, the rudiment of the next will begin to show itself. All embryology justifies this inference. The analogies it furnishes lead us to expect that when this serial arrangement becomes organic, the growing part of the series will show the general relations of the forthcoming parts, while they are very small and unspecialized. What will in such case be the appearances they assume? We shall have no difficulty in perceiving what it will be, if we take a form like that shown in Fig. 92, and dwarf its several parts at the same time that we generalize them. Figs. 100, 101, 102, and 103, will show the result; and in Fig. 104, which is the bud of a dicotyledon, we see how clear is the morphological correspondence: _a_ being the rudiment of a foliar organ beginning to take shape; _b_ being the almost formless rudiment of the next foliar organ; and _c_ being the quite-undifferentiated part whence the rudiments of subsequent foliar organs are to arise. [Illustration: Figs. 100–104.] [Illustration: Figs. 105–106.]