Comment on "Liquid Limits: The Glass Transition and Liquid-Gas Spinodal   Boundaries of Metastable Liquids"
  In ref. cond-mat/0005372, Sastry studies by numerical simulations the phase diagram of a simple fragile glass-forming liquid, presenting very interesting and clear results. We apply to this system, at various density values, the analytic approach to structural glass thermodynamics recently introduced and we compare our theoretical predictions on the liquid-glass transition temperature with Sastry's data. 
Barbara Coluzzi, Giorgio Parisi and Paolo Verrocchio