1506. Were we therefore acquainted with all vegetable organs, we should know their rank and developmental series; and thus also recognize the character, rank, and developmental series of the plants themselves, or their divisions. There can be no doubt that the lowest organs, e. g. the tissues, have been first developed and independently perfected as plants; later on they separate into anatomical systems and finally into members, whereby perfect plants must originate. _The division or classification of the vegetable kingdom is consequently that of the vegetable organs._ The Systematic of plants is a copy of that of their organs, or a plastic representation of the philosophical vegetable anatomy. With this every thing has been granted, which is requisite for the building or erection of the vegetable system. All principles, together with the methods, rest in the proposition that has been expressed. 1507. The artificial systems of plants are related to the vegetable kingdom, as the lexicon or dictionary is to language. Those systems which have hitherto been termed natural, but which should properly be called _methodical_, are related to the vegetable kingdom, as the ordinary grammar is to a language. The vegetable system must, however, be related to the vegetable kingdom, as the philosophical or genetic grammar is to language. This only agrees with the essence of the language, or is _natural_. The vegetable system is necessarily a philosophical or genetic one, that alone being truly or legitimately natural. (This system was first propounded by Oken, in the Ed. 1st of the Naturphilosophie, 1810; further developed in _Dietrich's_ Garten Journal, 1813; carried out in his Naturgeschichte fur Schülen, 1821, and in his Lehrbuch der Nat. Gesch. _Botanik_. Weimar, 1825.) The _artificial_ system collects the materials for the edifice, but leaves them to lie without order and in confusion; the _methodical_ or what has been called the natural system separates these materials and arranges them in homogeneous groups; the _genetic_, philosophical or truly natural, system, again mixes them amongst each other, but thereby actually erects the edifice. All three systems are therefore necessary and good, and no one of them merits being despised by the other; it is only when one of them imagines that it is the other, or can render the others unnecessary, that it trespasses from out its circle, and deserves reproach. Thus for _Floras_, whose ultimate object is to find out rapidly the names of plants upon botanical excursions, as also for the labelling of specimens in botanic gardens, the artificial system is the best; for the description, however, of foreign plants the methodical; but for insight into the whole vegetable world the philosophical or natural system. Would we compare Floras with each other, the latter system must certainly come into play; but then the matter to be dealt with is not about an excursion-book. _VEGETABLE SYSTEM._