on the motion of animals-第5章

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And　the　two　parts　aforesaid　display　this　motion　more　conspicuously



than　the　rest；　because　each　is　in　a　sense　a　separate　vital　organism；



the　reason　being　that　each　contains　vital　moisture。　In　the　case　of　the



heart　the　cause　is　plain；　for　the　heart　is　the　seat　of　the　senses；



while　an　indication　that　the　generative　organ　too　is　vital　is　that



there　flows　from　it　the　seminal　potency；　itself　a　kind　of　organism。



Again；　it　is　a　reasonable　arrangement　that　the　movements　arise　in



the　centre　upon　movements　in　the　parts；　and　in　the　parts　upon



movements　in　the　centre；　and　so　reach　one　another。　Conceive　A　to　be



the　centre　or　starting　point。　The　movements　then　arrive　at　the



centre　from　each　letter　in　the　diagram　we　have　drawn；　and　flow　back



again　from　the　centre　which　is　moved　and　changes；　（for　the　centre　is



potentially　multiple）　the　movement　of　B　goes　to　B；　that　of　C　to　C；　the



movement　of　both　to　both；　but　from　B　to　C　the　movements　flow　by　dint



of　going　from　B　to　A　as　to　a　centre；　and　then　from　A　to　C　as　from　a



centre。



　　Moreover　a　movement　contrary　to　reason　sometimes　does　and



sometimes　does　not　arise　in　the　organs　on　the　occasion　of　the　same



thoughts；　the　reason　is　that　sometimes　the　matter　which　is　passive



to　the　impressions　is　there　in　sufficient　quantity　and　of　the　right



quality　and　sometimes　not。



　　And　so　we　have　finished　our　account　of　the　reasons　for　the　parts



of　each　kind　of　animal；　of　the　soul；　and　furthere　of　sense…perception；



of　sleep；　of　memory；　and　of　movement　in　general；　it　remains　to　speak



of　animal　generation。











　　　　　　　　　　　　　　　　　　　　　　　　　　　　　…THE　END…



。