As we descend deeper and deeper in this region its inhabitants become more and more modified, and fewer and fewer, indicating our approach towards an abyss where life is either extinguished , or exhibits but a few sparks to mark its lingering presence.

In the autumn of the same year he registered at Edinburgh as a student of literature; and in 1838 appeared his first volume Malacologia Monensis a synopsis of the species of Manx Mollusca. The year 1851 witnessed the removal of the collections of the Geological Survey from Craig's Court to the museum in Jermyn Street and the appointment of Forbes as professor of natural history to the Royal School of Mines just establiEdward Forbesd in conjunction therewith. M.