The two-jet differential cross section ${\mathit{d}}^{3}$\ensuremath{\sigma}(p\ifmmode\bar\else\textasciimacron\fi{}p\ensuremath{\rightarrow}jet 1+jet 2+X)/${\mathit{dE}}_{\mathit{t}}$d${\mathrm{\ensuremath{\eta}}}_{1}$d${\mathrm{\ensuremath{\eta}}}_{2}$, averaged over -0.6\ensuremath{\le}${\mathrm{\ensuremath{\eta}}}_{1}$\ensuremath{\le}0.6, at \ensuremath{\surd}s =1.8 TeV, has been measured in the Collider Detector at Fermilab. The predictions of leading-order quantum chromodynamics for most choices of structure functions show agreement with the data.