第11章

　　Ontheotherhandthescaleofproductionapartfromfixedcapitalmightbedoubled。Inthatcaseaproductiveprocessofdoublethepreviousvolumewouldbecarriedonwiththesameadvancedcapitalof&pound；900。

　　Ifontheotherhandthepricesofthecirculationelementsofproductivecapitalweretoincreasebyonehalf，&pound；1500insteadof&pound；100or&pound；1，350insteadof&pound；900wouldberequiredperweek。Itwouldtakeanadditionalcapitalof&pound；450tocarryonthebusinessonthesamescale，andthiswouldexertaprotantopressureonthemoney-market，bigorsmalldependingonitscondition。Ifallthecapitalavailableonthismarketwerethenalreadyengaged，therewouldbeincreasedcompetitionforavailablecapital。Ifaportionofitwereunemployed，itwouldprotantobecalledintoaction。

　　But，inthethirdplace，givenacertainscaleofproduction，theturnovervelocityandthepricesoftheelementsofthecirculatingproductivecapitalremainingthesame，thepriceoftheproductsofBusinessXmayriseorfall。IfthepriceofthecommoditiessuppliedbyBusinessXfalls，thepriceofitscommodity-capitalof&pound；600，whichitconstantlythrewintocirculation，dropsto，say，&pound；500。Henceone-sixthofthevalueoftheadvancedcapitaldoesnotreturnfromtheprocessofcirculation。

　　Thesurplus-valuecontainedinthecommodity-capitalisnotconsideredhere。Itislostinthatprocess。Butsincethevalue，orprice，oftheelementsofproductionremainsthesame，thisrefluxof&pound；500sufficesonlytoreplace5/6ofthecapitalof&pound；600constantlyengagedintheprocessofproduction。Itwouldthereforerequiredanadditionalmoney-capitalof&pound；100tocontinueproductiononthesamescale。

　　Viceversa，ifthepriceoftheproductofBusinessXweretorise，thenthepriceofthe&pound；600commodity-capitalwouldbeincreased，say，to&pound；700。One-seventhofthisprice，or&pound；100，doesnotoriginateintheprocessofproduction，isnotadvancedinthisprocess，butderivesfromtheprocessofcirculation。Butonly&pound；600areneededtoreplacetheelementsofproduction。Hence，thereleaseof&pound；100。