The improvement of descriptive language, and the formation of schemes of classification of plants, went on gradually for some time, and was much advanced by Tournefort. But at last Linnæus embodied and followed out the convictions which had gradually been accumulating in the breasts of botanists; and by remodelling throughout both the terminology and the nomenclature of botany, produced one of the greatest reforms which ever took place in any science. He thus supplied a conspicuous example of such a reform, and a most admirable model of a language, from which {273} other sciences may gather great instruction. I shall not here give any account of the terms and words introduced by Linnæus. They have been exemplified in the _History of Science_[12\4]; and the principles which they involve I shall consider separately hereafter. I will only remind the reader that the great simplification in _nomenclature_ which was the result of his labours, consisted in designating each kind of plant by a _binary_ term consisting of the name of the _genus_ combined with that of the _species_: an artifice seemingly obvious, but more convenient in its results than could possibly have been anticipated. [Note 12\4: _Ib._ c. iv. sect. 1-3.] Since Linnæus, the progress of Botanical Anatomy and of Descriptive Botany have led to the rejection of several inexact expressions, and to the adoption of several new terms, especially in describing the structure of the fruit and the parts of cryptogamous plants. Hedwig, Medikus, Necker, Desvaux, Mirbel, and especially Gærtner, Link, and Richard, have proposed several useful innovations, in these as in other parts of the subject; but the general mass of the words now current consists still, and will probably continue to consist, of the terms established by the Swedish Botanist[13\4]. [Note 13\4: De Candolle, _Th. Elem._ p. 307.]