from a zone of width $\sim r_g$ from the surface of each colloid. When two colloids come close enough to each other so that their polymer-excluded regions overlap, the imbalance in polymer osmotic pressure pushes them together. This effective ‘depletion’ attraction is well described [@depletion] by the Asakura-Oosawa form [@AO]. Its dimensionless range can be estimated by the ratio $\xi=r_g/R$, while its strength is governed by the concentration of polymer coils in the free volume available to them, [$c_p^{\text{free}}$]{}. The free volume depends on the exact structure of the suspension, and is not an easily obtained experimental parameter. However, the concentration of polymer in the whole system, $c_p$, can be used as an alternative variable to describe the composition of the system [@cptheory].

The presence of a short-range attraction in hard spheres widens the equilibrium fluid-crystal coexistence region in the phase diagram [@cptheory; @cpphaseexpt], and introduces (non-equilibrium) gels at low volume fractions [@lowPhiCP1; @lowPhiCP2] and a re-entrant glass transition at high volume fractions [@gelMCTYukawa; @gelGlassYukawa; @glassGlassLogDecay; @glassMicellar1; @glassMCT; @reentrantGlass; @reentrantSim; @glassMicellar2; @gelMCTHiPhi; @SciortinoLogtime; @SciortinoAging]. In this paper we report a comprehensive study of structure and dynamics in the vicinity of this re-entrant glass transition in a model colloid-polymer mixture: sterically-stabilized 