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SYSTEMS OF See also:CLASSIFICATION Morphography includes the systematic exploration and tabulation of the facts involved in the recognition of all the See also:recent and See also:extinct kinds of animals and their See also:distribution in space and See also:time . (I) The museum-makers of old days and their See also:modern representatives the curators and describers of zoo-logical collections, (2) See also:early explorers and modern naturalist-travellers and writers on zoo-See also:geography, and (3) collectors of fossils and palaeontologists are the See also:chief varieties of zoological workers coming under this See also:head . Gradually since the time of See also:Hunter and See also:Cuvier anatomical study has associated itself with the more superficial morphography until to-See also:day no one considers a study of See also:animal See also:form of any value which does not include See also:internal structure, See also:histology and See also:embryology in its See also:scope . The real See also:dawn of See also:zoology after the legendary See also:period of the See also:middle ages is connected with the name of an Englishman, See also:Edward Edward See also:Wotton, See also:born at See also:Oxford in 1492, who practised wotton. as a physician in See also:London and died in 1555 . He published a See also:treatise De differentiis animalium at See also:Paris in 1552 . In many respects Wotton was simply an exponent of See also:Aristotle, whose teaching,. with various fanciful additions, constituted the real basis of zoological knowledge throughout the middle ages . It was Wotton's merit that he rejected the legendary and fantastic accretions, and returned to Aristotle and the observation of nature . The most ready means of noting the progress of zoology during the 16th; 17th and 18th centuries is to compare the Aristotle's classificatory conceptions of successive naturalists classif- with those which are to be found in the See also:works of See also:canon . Aristotle himself . Aristotle did not definitely and in See also:tabular form propound a classification of animals, but from a study of his See also:treatises Historia animalium, De generatione animalium, and De partibus animalium the following classification can be arrived at : A . "Evauµa, See also:blood-holding animals (= Vertebrate) . I . Zworo'.ouvra iv airrois, viviparous Enaema (=Mammals, including the See also:Whale) . 2 . "Ops Oss (=Birds) . 3 . TtrpalroIa aaoba horosouvra, four-footed or legless Enaema which See also:lay eggs (=See also:Reptiles and See also:Amphibia) . 4 'IrKsc (=Fishes) . X ZVIIi . 35B . "See also:Avalon, bloodless animals ( = Invertebrata) . 1 . Ma?obaa, soft-bodied Anaema (=See also:Cephalopoda) . 2 . MaXaKOOrpwca, soft-shelled Anaema (=See also:Crustacea) . 3 . "Eprsµa, insected Anaema or See also:Insects (=See also:Arthropoda, exclusive of Crustacea) . 4 . 'OorpaeoIEpoara, See also:shell-bearing Anaema (=Echini, See also:Gastropoda and Lamellibranchiu) . Wotton follows Aristotle' in the See also:division of animals into the Enaema and the Anaema, and in fact in the recognition of all the See also:groups above given, adding only one large See also:group wotton's to those recognized by Aristotle under the Anaema, modittcanamely, the group of Zoophyte, in which Wotton !tons . includes the Holothuriae, See also:Star-Fishes, Medusae, See also:Sea-Anemones and See also:Sponges . Wotton divides the viviparous quadrupeds into the many-toed, See also:double-hoofed and single-hoofed . By the introduction of a method of classification which was due to the superficial See also:Pliny—depending, not on structure, but on the See also:medium inhabited by an animal, whether See also:earth, See also:air or See also:water—Wotton is led to See also:associate Fishes and Whales as aquatic animals . But this is only a momentary See also:lapse, for he broadly distinguishes the two kinds . The Swiss See also:professor, Konrad See also:Gesner (1516-1565), is the most voluminous and instructive of these earliest writers on systematic zoology, and was so highly esteemed that his Historia animalium was republished a See also:hundred years after his See also:death . His See also:great See also:work appeared in successive parts—e.g .
Vivipara, ovipara, ayes, See also:Pisces, serpentes et See also:scorpio —and contains descriptions and illustrations of a large number of animal forms with reference to the lands inhabited by them
.
Gesner's work, like that of See also:
4
.
5
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Gearless
considerable use of anatomical characters in his See also:definitions of larger groups, and may thus be considered as the See also:father of modern zoology
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Associated with Ray in his work, and more especially occupied with the study of the See also:Worms and See also:Mollusca, was See also: 1735, 12th 1768) . Apart from his special discoveries in the See also:anatomy of plants and animals, and his descriptions of new species, the great merit of Linnaeus was his introduction of a method of enumeration and classification which may be said to have created systematic zoology and botany in their See also:present form, and establishes his name for ever as the great organizer, the See also:man who recognized a great See also:practical want in the use of See also:language and supplied it . Linnaeus adopted Ray's conception of species, but he made species a practical reality by insisting that every species shall have a double Latin name —the first See also:half to be the name of the genus common to several species, and the second half to be the specific name . Previously to Linnaeus See also:long many-worded names had been used, sometimes with one additional See also:adjective, sometimes with another, so that no true names were fixed and accepted . Linnaeus by his See also:binomial system made it possible to write and speak with accuracy of any given species of plant or animal . He was, in fact, the See also:Adam of zoological See also:science . He proceeded further to introduce into his enumeration of animals and plants a See also:series of groups, viz. genus, See also:order, class, which he compared to the subdivisions of an See also:army or the subdivisions of a territory, the greater containing several of the less, as follows: Class . Order . Genus . Species . Variety . Genus sum- Genus inter- Genus proxi- Species . Individuum . mum. medium. mum . Provincia . Territorium . Paroecia . Pagus . Domicilium . Legio . Cohors . Manipulus . Contubernium . See also:Miles . Linnaeus himself recognized the purely subjective See also:character of his larger groups; for him species were, however, See also:objective: " there are, " he said, " just so many species as in the beginning the See also:Infinite Being created." It was reserved for a philosophic zoologist of the 19th century (See also:Agassiz, See also:Essay on Classification, 1859) to maintain that genus, order and class were also objective facts capable of precise estimation and valuation . This See also:climax was reached at the very moment when See also:Darwin was See also:publishing the Origin of Species (1859), by which universal See also:opinion has been brought to the position that species, as well as genera, orders and classes, are the subjective expressions ofa vast ramifying See also:pedigree in which the only objective existences are individuals, the apparent species as well as higher groups being marked out, not by any distributive See also:law, but by the inter-See also:action of living See also:matter and its See also:physical environment, causing the persistence of some forms and the destruction of vast series of ancestral intermediate kinds . The classification of Linnaeus (from Syst . Nat., 12th ed., 1766) should be compared with that of Aristotle . It Ciassifiis as follows—the See also:complete See also:list of Linnaean genera cation of being here reproduced:— Linnaeus . Class I . See also:MAMMALIA . Order 1 . See also:Primates . Genera: Homo, Simia, See also:Lemur, Vespertilio . 2 . Bruta . Genera: Elephas, Trichecus, Bradypus, Myrmecophaga, Manis, Dasypus . Ferae . Genera : Phoca, Canis, Felis, Viverra, Mustela, Ursus, Didelphys, Talpa, Sorex, Erinaceus . Glires . Genera : Hystrix, Lepus, See also:Castor, See also:Mus, Sciurus, Noctilio . See also:Pecora . Genera: Camelus, See also:Moschus, Cervus, Capra, Ovis, See also:Bos . Belluae . Genera: Equus, See also:Hippopotamus, See also:Sus, See also:Rhinoceros . Cete . Genera : Monodon, Balaena, Physeter, See also:Delphinus . Class II . AvES . Order i . Accipitres . Genera: Vultur, Falco, Strix, Lanius . 2 . Picae . Genera: (a) Trochilus, Certhia, Upupa, Buphaga, Sitta, Oriolus, Coracias, Gracula, Corms, Paradisea; (b) Ramphastos, See also:Trogon, Psittacus, Crotophaga, See also:Picus, Yunx, Cucutus, Bucco; (c) Buceros, Alcedo, Merops, Todos . Anseres . Genera: (a) Anas, Mergus, See also:Phaethon, Plotus; (b) Rhyncops, Diomedea, Alca, Procellaria, Pelecanus, Larus, Sterna, Colymbus . Grallae . Genera: (a) Phoenicopterus, Platalea, Palamedea, Mycteria, See also:Tantalus, See also:Ardea, Recurvirostra, Scolopax, Tringa, Fulica, Parra, Rallus, Psophia, Cancroma; (b) Hematopus, Charadrius, See also:Otis, Struthio . Gallinae . Genera: Didus, Pave, Meleagris, Crax, Phasianus, Tetrao, Numida . 6 . Passeres . Genera: (a) Loxia, Fringilla, Emberiza; (b) Caprimulgus, Hirundo, Pipra; (c) Turdus, Ampelis, Tanagra, MYluscicapa; (d) Pants, Motacilla, Alauda, Sturnus, See also:Columba . Class See also:Ill . AMPHIBIA . Order I . R.eptilia . Genera : Testudo, See also:Draco, Lacerta, Rana . 2 . Serpentes . Genera: Crotalus, See also:Boa, Coluber, Anguis, See also:Amphisbaena, See also:Caecilia . See also:Nantes . Genera: Petromyzon, See also:Raja, Squalus, See also:Chimaera, Lophius, Acipenser, Cyclepterus, Balistes, Ostracion, Tetrodon, Diodon, Centriscus, Syngnathus, See also:Pegasus . Class IV . Pisces . Order 1 . Apodes . Genera: See also:Muraena, Gymnotus, Trichiurus, Anarrhichas, Ammodytes, Ophidium, Stromateus, Xiphias . 2 . Jugulares . Genera: Callionymus, Uranoscopus, Trachinus, Gadus, Blennius . Thoracici . Genera: Cepola, Echeneis, Coryphaena, Gobius, Coitus, Scorpaena, See also:Zeus, Pleuronectes, Chaetodon, Sparus, Labrus, Sciaena, Perca, Gasterosteus, Scomber, Mullus, Trigla . Abdominales . Genera: Cobitis, Amia, Silurus, Zeuthis, Loricaria, Selmo, Fistularia, Esox, Elops, See also:Argentina, Atherina, Mugil, Mormyrus, Exocoetus, Polynemus, Clupea, Cyprinus . 3• 4 . 5 . 6 . 7 . 3• 4 . 5 . 3 . 3 . 4 . Class V . INSECTA . Order I . See also:Coleoptera . Genera: (a) Scarabaeus, Lucanus, Dermestes, Hister, Byrrhus, Gyrinus, Attelabus, Curculio, Silpha, Coccinella; (b) Bruchus, Cassida, Ptinus, Chrysomela, His pa, Meloe, Tenebrio, Lampyris, Mo>della, Staphylinus; (c) Cerambyx, Leptura, Cantharis, Elater, Cicindela, Buprestis, Dytiscus, Carabus, Necydalis, Forficula . 2 . See also:Hemiptera . Genera: Blatta, See also:Mantis, Gryllus, Fulgora, See also:Cicada, Notonecta, Nepa, Cimex, Aphis, Chermes, Coccus, Thrips . 3 . See also:Lepidoptera . Genera: Papilio, See also:Sphinx, Phalaena . „ 4 . See also:Neuroptera . Genera: Libellula, Ephemera, Myrmeleon, Phryganea, Hemerobius, Panorpa, Raphidia . See also:Hymenoptera . Genera: Cynips, Tenthredo, Sirex, See also:Ichneumon, Sphex, Chrysis, Vespa, See also:Apis, Formica, Mutilla . 6 . See also:Diptera . Genera: Oestrus, Tipula, Musca, Tabanus, Culex, Empis, Conops, Asilus, Bombylius, Hippobosca . See also:Aptera . Genera: (a) Pedibus See also:sex; capite a thorace discreto : Lepisma, Podura, Termes, Pediculus, Pulex . (b) Pedibus 8–14; capite thoraceque unitis: See also:Acarus, Phalangium, Aranea, Scorpio, See also:Cancer, Monoculus, Oniscus . (c) Pedibus pluribus; capite a thorace discreto: Scolopendra, lulus . Class VI . VERMES . Order 1 . Intestina . Genera: (a) Pertusa laterali poro: Lumbricus, Sipunculus, Fasciola . (b) Imperforata poro laterali nullo: Gordius, Ascaris, Hirudo, Myxine . 2 . Mollusca . Genera: (a) Ore supero; basi se afligens: Actinia, Ascidia . (b) Ore antico; corpore pertuso laterali foraminulo: Limax, Aplysia, See also:Doris, Tethis . (c) Ore antico; corpore tentaculis antice cincto: Holothuria, Terebella . (d) Ore antico; corpore brachiato: See also:Triton, See also:Sepia, Clio, Lernaea, Scyllaea . (e) Ore antico; corpore pedato: Aphrodita, Nereis . (f) Ore infero centrali: See also:Medusa, See also:Asteria, See also:Echinus . ^ 3 . Teslacea . Genera: (a) Multivalvia: See also:Chiton, Lepas, Pholas . (b) Bivalvia (= Conchae) : Mya, Solen, Tellina, Cardium, Mactra, Donax, See also:Venus, Spandylus, Chama, Arca, Ostrea, Anomia, Mytilus, Pinna . (c) Univalvia spira regulari (= Cochleae) : Argonauta,, See also:Nautilus, Conus, Cypraea, Bulla, Voluta, Buccinum, Strombus, Murex, Trochus, Turbo, See also:Helix, Nerita, Haliotis . (d) Univalvia absque spira regulari: Patella, Dentalium, Serpula, See also:Teredo, Sabella . • 4 . Lithophyta . Genera: Tubipora, Madrepora, Millepora, Cellepora . 5 . Zoophyta . Genera: (a) Fixata: Isis, Gorgonia, Alcyonium, Spongia, Flustra, Tubularia, Corallina, Sertularia, See also:Vorticella .
(b) Locomotiva: See also:Hydra, Pennatula, See also:Taenia, Volvox, Furia, See also:Chaos
.
The characters of the six classes are thus given by Linnaeus:
See also:Cor biloculare, biauritum; Sanguine calido, rubro:
Cor uniloculare, uniauritum; 1 2 Sanguine frigido; rubro:
Cor uniloculare, inauritum; Sanie frigida, albida:
1 The anatomical See also:error in reference to the auricles of Reptiles and Batrachians on the part of Linnaeus is extremely interesting, since it shows to what an extent the most patent facts may See also:escape the observation of even the greatest observers, and what an amount of repeated See also:dissection and unprejudiced See also:attention has been necessary before the structure of the commonest animals has become known
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Between Linnaeus and Cuvier there are no very great names; but under the stimulus given by the admirable method and
system of Linnaeus observation and description From
of new forms from all parts of the world, both Linnaeus recent and fossil, accumulated
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We can only cite the to cuvter
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names of See also: The species of Linnaeus were supposed to represent a aeries of steps in a See also:scale of ascending complexity, and it was thought possible thus to arrange the animal See also:kingdom in a single series—the orders within the classes succeeding one another in See also:regular gradation, and the classes succeeding one another in a similar rectilinear progression . J . B . P. de See also:Lamarck (1744–1829) represents most completely, both by his development theory (to be further Lamarck's mentioned below) and by his See also:scheme of classifica- atesstfttion, the high-water See also:mark of the popular but cation, fallacious conception of a scala naturae . His classification (1801–1812) is as follows: Invertebrata . 1 . Apathetic Animals . Class I . INFUSORIA . Orders: Nuda, See also:Appendiculata . Class II . PoLYPI . Orders: Ciliati (See also:Rotifera), Denudati (Hydroids), Vaglnati (See also:Anthozoa and See also:Polyzoa), Natantes (Crinoids) . Class III . RADIARIA . Orders: Mollia (Acalephae), See also:Echinoderma (including Actiniae) . Class IV . See also:TUNICATA . Orders: Bothryllaria, Ascidia . Class V . VERMES . Orders: Molles (Tape-Worms and Flukes), Rigiduli (Nematoids), Hispiduli (Nais, &c.), Epitoariae (Lernaeans, &c.) . 2 . Sensitive Animals . Class VI . INSECTA (See also:Hexapoda) . Orders: Aptera, Diptera, Hemiptera, Lepidoptera, Hymenoptera, Neuroptera, See also:Orthoptera, Coleoptera . Class VII . See also:ARACHNIDA . Orders: Antennato-Trachealia (=See also:Thysanura and See also:Myriapoda), Exantennato-Trachealia, Exantennato-Branchialia . Class VIII . CRUSTACEA . Orders: Heterobranchia (See also:Branchiopoda, Isopoda, Amphipoda, Stomapoda), Homobranchia (Decapoda) . Class IX . See also:ANNELIDA . Orders : A poda, Antennata, Sedentaria . Class X . CIRRIPEDIA . Orders : Sessilia, Pedunculata . Class XI . CONCHIFERA . Orders: Dimyaria, Monomyaria . Class XII . MOLLUSCA . Orders: See also:Pteropoda, Gasteropada, Trachelipoda, Cephalopoda, Heteropoda . See also:Vertebrata . 3 . Intelligent Animals . Class XIII . FISHES . Class XV: BIRDS . , XIV . REPTILES . „ XVI . MAMMALS . 5 . 7 . ,, „ viviparis, Mammalibus; oviparis, Avibus . pulmone arbitrario, Amphibiis; branchiis externis, Piscibus. antennatis, Insectis; tentaculatis, Vermibus . The enumeration of orders above given will enable the reader to form some conception of the progress of knowledge See also:relating to the See also:lower forms of life during the fifty See also:odd years which intervened between Linnaeus and Lamarck . The number of genera recognized by Lamarck is more than ten times as great as that recorded by Linnaeus . We have mentioned Lamarck before his great contemporary Cuvier because, in spite of his valuable philosophical See also:doctrine of development, he was, as compared with Cuvier and estimated as a systematic zoologist, a mere enlargement and logical out-come of Linnaeus . The distinctive merit of G . L . Cuvier (1769–1832) is that he started a new view as to the relationship of animals, which he Cuvkr. may be said in a large measure to have demon- strated as true by his own anatomical researches . He opposed the scala naturae theory, and recognized four distinct and divergent branches or embranchemens, as he called them, in each of which he arranged a certain number of the Linnaean classes, or similar classes . The embranchemens were characterized each by a different type of anatomical structure . Cuvier thus laid the See also:foundation of that branching See also:tree-like arrangement of the classes and orders of animals now recognized as being the necessary result of attempts to represent what is practically a genealogical tree or pedigree . Apart from this, Cuvier was a keen-sighted and enthusiastic anatomist of great skill and See also:industry.;, It is astonishing how many See also:good observers it re-quires to dissect and draw and See also:record over and over again the structure of an animal before an apps iximately correct See also:account of it is obtained . Cuvier dissected many Molluscs and other animals which had not previously been anatomized; of others he gave more correct accounts than had been given by earlier writers . Another special distinction of Cuvier is his remarkable work in comparing extinct with recent organisms, his descriptions of the fossil Mammalia of the Paris See also:basin, and his general application of the knowledge of recent animals to the reconstruction of extinct ones, as indicated by fragments only of their skeletons . It was in 1812 that Cuvier communicated to the See also:Academy of Sciences of Paris his views on the classification of animals . He says: " Si Von considere le regne animal d'apres See also:les principes que nous venons de poser, en se debarassant See also:des prejuges etablis sur les divisions anciennement admises, en n'ayant egard qu' a I'organisation et a la nature des animaux, et non pas a leur grandeur, a leur utilite, au plus ou mains de connaissance que nous en avons, ni a toutes les autres circonstances accessoires, on trouvera qu'il existe quatre formes principales, quatre plans generaux, si l'on pent s'exprimer ainsi, d'apres lesquels tous les animaux semblent avoir ete rnodeles et dont les divisions ulterieures, de quelque titre que les naturalistes les aient decorees, ne sont que des modifications assez legeres, fondees sur le developpement, ou l'addition de quelques parties qui ne changent rien a l'essence du See also:plan." Cuvk?s His classification as finally elaborated in Le Regne classification . .- catto Animal (Paris, 1829) is as follows: First See also:Branch . Animalia Vertebrata . Class I, MAMMALIA . Orders: Biniana, Quadrumana, See also:Carnivora, See also:Marsupialia, See also:Rodentia, See also:Edentata, Pachydermata, See also:Ruminantia, See also:Cetacea . Class II . BIRDS . Orders: Accipitres, Passeres, Scansores, Gallinae, Grallae, Palmipedes . Class III . REPTILIA . Orders : Chelonia, Sauria, Ophidia, See also:Batrachia . Class IV . FISHES . Orders: (a) Acanthopterygii, Abdominales, Subbrachii, A podes, Lophobranchii, Plectognathi; (b) Sturiones, Selachii, Cyclostomi . Second Branch . Animalia Mollusca . Class I . CEPHALOPODA . Class II . PTEROPODA . Class III . GASTROPODA . Orders: Pulmonala, Nudibranchia, Inferobranchia, Tecti- branchia, Heteropoda, Pectinibranchia, Tubulibranchia, Scutibranchia, Cyclobranchia . Class IV . See also:ACE PHALA . Orders: Testacea; Tunicata . Class V . See also:BRACHIOPODA . Class VI . CIRRIIOPODA . Third Branch . Animalia See also:Articulata . Class I . ANNELIDES . Orders: Tubicolae, Dorsibranchiae, Abranchiae . Class II . CRUSTACEA . Orders: (a)' See also:Malacostraca: Decapoda, Stomapoda, Amphipoda, Laernodipoda, Isopoda; (b) See also:Entomostraca: Branchiopoda, Poecilopoda, Trilobitae . Class III . ARACHNIDES . Orders: Pulmonariae, Tracheariae . Class IV . INSECTS . Orders: Myriapoda, Thysanura, Parasita, Suctoria, Coleoptera, Orthoptera, Hemiptera, Neuroptera, Hymenoptera, Lepidoptera, Rhipiptera, Diptera . See also:Fourth Branch . Animalia See also:Radiata . Class I . ECHINODERMS . Orders: Pedicellata, Apoda . Class II . INTESTINAL WORMS . Orders: Neuzatoidea, Parenchymatosa . Class III . ACALEPHAE . Orders: Simplices, Hydrostaticae . Class IV . POLYPI (including the See also:Coelentera of later authorities and the Polyzoa) . Orders: Carnosi, Gelatinosi, Polypiarii . Class V . INFUSORIA . Orders: Rotifera, Homogenea (this includes the See also:Protozoa of recent writers and some Protophyla) . The leading See also:idea of Cuvier, his four embranchemens, was See also:con-firmed by the Russo-See also: |