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The requested URL /mbrowse/msdb/OriginOfSpecies/description/is/Geographical+distribution+has+often+been+used,+though+perhaps+not+quite+logically,+in+classification,+more+especially+in+very+large+groups+of+closely+allied+forms. Temminck+insists+on+the+utility+or+even+necessity+of+this+practice+in+certain+groups+of+birds;+and+it+has+been+followed+by+several+entomologists+and+botanists. [[[[[images/Coenraad+Jacob+Temminck.jpg|Coenraad+Jacob+Temminck]]]]] Finally,+with+respect+to+the+comparative+value+of+the+various+groups+of+species,+such+as+orders,+sub-orders,+families,+sub-families,+and+genera,+they+seem+to+be,+at+least+at+present,+almost+arbitrary. Several+of+the+best+botanists,+such+as+Mr+Bentham+and+others,+have+strongly+insisted+on+their+arbitrary+value. [[[[[images/George+Bentham.jpg|George+Bentham]]]]]/ was not found on this server.