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CLASSIFICATION (Lat. classis, a class...

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Originally appearing in Volume V06, Page 462 of the 1911 Encyclopedia Britannica.
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CLASSIFICATION (See also:Lat. classis, a class, probably from the See also:root cal-, cla-, as in Gr. icaMce, clamor)  , a logical See also:process, See also:common to all the See also:special sciences and to knowledge in See also:general, consisting in the collection under a common name of a number of See also:objects which are alike in one or more respects . The process consists in observing the objects and abstracting from their various qualities that characteristic which they have in common . This characteristic constitutes the See also:definition of the " class " to which they are regarded as belonging . It is this process by which we arrive first at "See also:species" and then at " genus," i.e. at all scientific generalization . Individual things, regarded as such, constitute a See also:mere aggregate, unconnected with one another, and so far unexplained; scientific knowledge consists in systematic See also:classification . Thus if we observe the heavenly bodies individually we can See also:state merely that they have been observed to have certain motions through the See also:sky, that they are luminous, and the like . If, however, we compare them one with another, we discover that, whereas all partake in the general See also:movement of the heavens, some have a movement of their own . Thus we arrive at a See also:system of classification according to See also:motion, by which fixed stars are differentiated from See also:planets . A further classification according to other criteria gives us stars of the first magnitude and stars of the second magnitude, and so forth . We thus arrive at a systematic understanding expressed in See also:laws by the application of which accurate forecasts of See also:celestial phenomena can be made . Classification in the strict logical sense consists in discovering the casual interrelation of natural objects; it thus differs from what is often called " artificial " classification, which is the preparation, e.g. of See also:statistics for particular purposes, administrative and the like . Of the systems of classification adopted in See also:physical See also:science, only one requires treatment here, namely, the classification of Latin See also:pronunciation .

the sciences as a whole, a problem which has from the See also:

time of See also:Aristotle attracted considerable See also:attention . Its See also:object is to delimit the See also:spheres of See also:influence of the See also:positive sciences and show how they are mutually related . Of such attempts three are specially noteworthy, those of See also:Francis See also:Bacon, Auguste See also:Comte and See also:Herbert See also:Spencer . Bacon's classification is based on the subjective criterion of the various faculties which are specially concerned . He thus distinguished See also:History (natural, See also:civil, See also:literary, ecclesiastical) as the See also:province of memory, See also:Philosophy (including See also:Theology) as that of See also:reason, and See also:Poetry, Fables and the like, as that of See also:imagination . This classification was made the basis of the Encyclopedie . Comte adopted an entirely different system based on an See also:objective criterion . Having first enunciated the theory that all science passes through three stages, theological, See also:meta-physical and positive, he neglects the two first, and divides the last according to the " things to be classified," in view of their real See also:affinity and natural connexions, into six, in See also:order of decreasing generality and increasing complexity—See also:mathematics, See also:astronomy, physics, See also:chemistry, See also:physiology and See also:biology (including See also:psychology), and See also:sociology . This he conceives to be not only the logical, but also the See also:historical, order of development, from the abstract and purely deductive to the See also:concrete and inductive) . Sociology is thus the highest, most complex, and. most positive of the sciences . Herbert Spencer, condemning this See also:division as both incomplete and theoretically unsound, adopted a three-See also:fold division into (1) abstract science (including See also:logic and mathematics) dealing with the universal forms under which all knowledge of phenomena is possible, (2) abstract-concrete science (including See also:mechanics, chemistry, physics), dealing with the elements of phenomena themselves, i.e. laws of forces as deducible from the persistence of forces, and (3) concrete science (e.g. astronomy, biology, sociology), dealing with " phenomena themselves in their totalities," the universal laws of the continuous redistribution of See also:Matter and Motion, See also:Evolution and See also:Dissolution . Beside the above three systems several others deserve brief mention .

In See also:

Greece at the See also:dawn of systematic thought the physical sciences were few in number; none the less philosophers were not agreed as to their true relation . The Platonic school adopted a triple classification, physics, See also:ethics and dialectics; Aristotle's system was more complicated, nor do we know precisely how he subdivided his three See also:main classes, theoretical, See also:practical and poetical (i.e. technical, having to do with irotl7Qis, creative) . The second class covered ethics and politics, the latter of which was often regarded by Aristotle as including ethics; the third includes the useful and the imitative sciences; the first includes See also:metaphysics and physics . As regards pure logic Aristotle sometimes seems to include it with metaphysics and physics, sometimes to regard it as See also:ancillary to all the sciences . See also:Thomas See also:Hobbes (See also:Leviathan) See also:drew up an elaborate paradigm of the sciences, the first See also:stage of which was a See also:dichotomy into " Naturall Philosophy " (" consequences from the accidents of bodies naturall ") and " Politiques and Civill Philosophy " (" consequences from accidents of Politique bodies ") . The former by successive subdivisions is reduced to eighteen special sciences; the latter is subdivided into the rights and duties of See also:sovereign See also:powers, and those of the subject . See also:Jeremy See also:Bentham and A . M . See also:Ampere both drew up elaborate systems based on the principle of dichotomy, and beginning from the distinction of mind and See also:body . Bentham invented an artificial terminology which is rather curious than valuable . The science of the body was Somatology, that of the mind Pneumatology . The former include Posology (science of quantity, mathematics) and Poiology (science of quality); Posology includes Morphoscopic (See also:geometry) and Alegomorphic(See also:arithmetic) .

See further Bentham's Chrestomathia and See also:

works quoted under BENTHAM, JEREMY . Carl See also:Wundt criticized most of these systems as taking too little See also:account of the real facts, and preferred a classification based on the standpoint of the various sciences towards their subject-matter . His system may, therefore, be described as conceptional . It distinguishes philosophy, which deals with facts in their widest-See also:CLAUDE, J . universal relations, from the special sciences, which consider facts in the See also:light of a particular relation or set of relations . All these systems have a certain value, and are interesting as throwing light on the views of those who invented them . It will be seen, however, that none can See also:lay claim to unique validity . The fundamenta divisionis, though in themselves more or less logical, are quite arbitrarily chosen, generally as being germane to a preconceived philosophical or scientific theory .

End of Article: CLASSIFICATION (Lat. classis, a class, probably from the root cal-, cla-, as in Gr. icaMce, clamor)
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