\"Thegreatimprovementsmadeinmachinesofeverykindhaveraisedtheirproductivepowerverymuch。Withoutanydoubt，theshorteningofthehoursoflabour……gavetheimpulsetotheseimprovements。Thelatter，combinedwiththemoreintensestrainontheworkman，havehadtheeffect，thatatleastasmuchisproducedintheshortened（bytwohoursorone—sixth）
working—dayaswaspreviouslyproducedduringthelongerone。\"[91]
Onefactissufficienttoshowhowgreatlythewealthofthemanufacturersincreasedalongwiththemoreintenseexploitationoflabour—power。From1838to1850，theaverageproportionalincreaseinEnglishcottonandotherfactorieswas32%，whilefrom1850to1856itamountedto86%。
ButhowevergreattheprogressofEnglishindustryhadbeenduringthe8yearsfrom1848to1856undertheinfluenceofaworking—dayof10hours，itwagfarsurpassedduringthenextperiodof6yearsfrom1856to1862。
Insilkfactories，forinstance，therewerein1856，spindles1，093，799;