Ridpath's history of the world; being an account of the ethnic origin, primitive estate, early migrations, social conditions and present promise of the principal families of men .. . ceased, and with disuse camefeebleness of func-tion, reduction ofsize, and finalatrophy. Thiswould appear tobe the only pos-sible explanationof the presence ofsuch a rudimen-tary part as thesemilunar fold inan animal such asman. The very samething may be saidof those otherstructural ele-ments in the hu-man body whichno longer serve apurpose. Whatthat purpose wouldbe under certainconditions we areable to see by agl
Ridpath's history of the world; being an account of the ethnic origin, primitive estate, early migrations, social conditions and present promise of the principal families of men .. . ceased, and with disuse camefeebleness of func-tion, reduction ofsize, and finalatrophy. Thiswould appear tobe the only pos-sible explanationof the presence ofsuch a rudimen-tary part as thesemilunar fold inan animal such asman. The very samething may be saidof those otherstructural ele-ments in the hu-man body whichno longer serve apurpose. Whatthat purpose wouldbe under certainconditions we areable to see by aglance at the anat-omy and physi-ology of other ani-mals. It is nolonger useful tohuman beings,having as they dothe free use of thearm and hand, topossess a muscle for moving the ears, though such a mus-Atrophied ear- cle in the lower animals isSmI^ kigWy important and bene-man- ficial. But the muscle, though in .an atrophied or semiatrophiedcondition, still exists in man, and in some instances the possessor is still able by thewill to move the ear in a manner whichmust have been common and convenientfor the species in some remote prehistoricepoch. The same thing may be said of. EXAMPLE OF EXTREME LONGEVITY—AN EASTERN by G. Vuillier. the appendix vermiformis and of severalother parts of the human body for whichno plausible explanation has ever beenoffered except that they stand for organsand offices that were once in full exerciseand development by the ancestors of our 116 GREAT RACES OF MANKIND. race, but have fallen into desuetudethrough ages of changing conditions and WikkiM*.
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