  Observation of salt-induced aggregation of lysozyme at pH = 4.5,
22$^{\circ}$C by optical microscopy revealed four regimes: bicontinuous
texture, `beads', large aggregates, and transient gelation. The interaction of
a metastable liquid-liquid binodal and an ergodic to non-ergodic transition
boundary inside the equilibrium crystallization region can explain our
findings. Lysozyme data at -2$^{\circ}$C, as well as many literature results,
are consistent with the relative movement of these boundaries.
