The leisure which Hobson enjoyed after his election to the Sadleirian Professorship enabled him to devote himself to its complete rewriting, and the second edition (1922-25) was double the size of the first.
Ang oras na walang ginagawa na Hobson masaya pagkatapos ng kanyang halalan sa Sadleirian pagkapropesor-enable sa kanya upang italaga ang sarili sa kanyang kumpletong rewriting, at ang pangalawang edisyon (1922-25) ay double ang laki ng mga unang.