Lectures delivered at Yale University on the Silliman Foundation. The author was invited to lecture at New Haven during the month of March 1921 on a subject relating to religious history. He chose the ideas current in Roman paganism concerning the lot of the soul after death. Lectures included are: historical introduction; after life in the tomb; the nether world; celestial immortality; winning of immortality; untimely death; journey to the beyond; sufferings of hell and metempsychosis; felicity of the blessed.