第10章

　　Secondperiodofturnover。Atthebeginningofthe13thweek，&pound；900havereturnedandareabletobeginanewturnover。Butthesecondworkingperiodhasalreadybeenopenedinthe10thweekbytheadditional&pound；300。Atthestartofthe13thweek，thankstothis，one-thirdoftheworkingperiodisalreadyoverand&pound；300hasbeenconvertedfromproductivecapitalintoproduct。Sinceonly6weeksmorearerequiredforthecompletionofthesecondworkingperiod，onlytwo-thirdsofthereturnedcapitalof&pound；900，oronly&pound；600，canenterintotheproductiveprocessofthesecondworkingperiod。&pound；300oftheoriginal&pound；900

　　aresetfreetoplaythesamerolewhichtheadditionalcapitalof&pound；300

　　playedinthefirstworkingperiod。Atthecloseofthe6thweekofthesecondperiodofturnoverthesecondworkingperiodisup。Thecapitalof&pound；900advancedinitreturnsafter3weeks，orattheendofthe9thweekofthesecond，12-weekperiodofturnover。Duringthe3weeksofitsperiodofcirculation，thefreedcapitalof&pound；300comesintoaction。Thisbeginsthethirdworkingperiodofacapitalof900inthe7thweekofthesecondperiodofturnover，orthe19thweekoftheyear。

　　Thirdperiodofturnover。Atthecloseofthe9thweekofthesecondperiodofturnoverthereisanewrefluxof&pound；900。Butthethirdworkingperiodhasalreadycommencedinthe7thweekofthepreviousperiodofturnoverand6weekshavealreadyelapsed。Thethirdworkingperiod，then，lastsonlyanother3weeks。Henceonly&pound；300ofthereturned&pound；900enterintotheproductiveprocess。Thefourthworkingperiodfillsouttheremaining9weeksofthisperiodofturnoverandthusthe37thweekoftheyearbeginssimultaneouslythefourthperiodofturnoverandthefifthworkingperiod。

　　Inordertosimplifythecalculationinthiscaseletusassumeaworkingperiodof5weeksandaperiodofcirculationof5weeks，makingaturnoverperiodof10weeks。Figuretheyearascomposedoffiftyweeksandthecapitaloutlayperweekas&pound；100。Aworkingperiodthenrequiresacirculatingcapitalof&pound；500andthetimeofcirculationanadditionalcapitalof&pound；500。Theworkingperiodsandtimesofturnoverthenareasfollows: