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The requested URL /mbrowse/msdb/OriginOfSpecies/description/is/But+it+may+be+asked,+what+ought+we+to+do,+if+it+could+be+proved+that+one+species+of+kangaroo+had+been+produced,+by+a+long+course+of+modification,+from+a+bear? [[[[[images/kangaroo.jpg|kangaroo]]]]] [[[[[images/bear.jpg|bear]]]]] Ought+we+to+rank+this+one+species+with+bears,+and+what+should+we+do+with+the+other+species? The+supposition+is+of+course+preposterous;+and+I+might+answer+by+the+[[Ad+hominem|argumentum+ad+hominem]],+and+ask+what+should+be+done+if+a+perfect+kangaroo+were+seen+to+come+out+of+the+womb+of+a+bear? According+to+all+analogy,+it+would+be+ranked+with+bears;+but+then+assuredly+all+the+other+species+of+the+kangaroo+family+would+have+to+be+classed+under+the+bear+genus. The+whole+case+is+preposterous;+for+where+there+has+been+close+descent+in+common,+there+will+certainly+be+close+resemblance+or+affinity./ was not found on this server.