Gray used a combination of Linnaeus'sexual classification and Jussieu's natural classification to group together a number of families having in common six equal stamens, a single style and a perianth that was simple and petaloid, but did not use formal names for these higher ranks.
12.
Some of the plant families still retain the names of Linnaean " natural orders " or even the names of pre-Linnaean natural groups recognised by Linnaeus as orders in his natural classification ( e . g . " Palmae " or " Labiatae " ).
13.
In an earlier attempt to improve the classification of animals, Cuvier transferred the concepts of Antoine-Laurent de Jussieu's ( 1748-1836 ) method of natural classification, which had been presented in 1789 in " Genera plantarum ", from botany to zoology.
14.
With a move towards a more natural classification of fungi, the genus " Sclerotium " is now restricted to sclerotial anamorphs of " Typhula ", since the type species, " Sclerotium complanatum ", is the anamorph of " Typhula setipes ".
15.
In 1798 Cuvier published his first independent work, the " Tableau �l�mentaire de l'histoire naturelle des animaux ", which was an abridgment of his course of lectures at the �cole du Pantheon and may be regarded as the foundation and first statement of his natural classification of the animal kingdom.
16.
Frenchman Michel Adanson ( 1727 1806 ) in his " " ( 1763, 1764 ), apart from extending the current system of family names, emphasized that a natural classification must be based on a consideration of all characters, even though these may later be given different emphasis according to their diagnostic value for the particular plant group.
17.
Upon these follow special methods of induction applicable to quantity : the method of curves, the method of means, the method of least squares and the method of residues, and special methods depending on resemblance ( to which the transition is made through the law of continuity ), such as the method of gradation and the method of natural classification.
18.
It is best, however, not to narrow unnecessarily the sphere of classicity; to exclude Terence on the one hand or Tacitus and Pliny on the other, would savour of artificial restriction rather than that of a natural classification . " ( This from a scholar who had just been complaining that golden Latin was not a natural language . ) The contradiction remains; Terence is and is not a classical author depending on context.
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