Migration and accumulation of hydrocarbons conform with the simple laws of nature and logic. These governing principles are reviewed, both in the physical sense and in the sense of geologic time, and particularly from the standpoint of such concepts as distant source and regional migration, migration paths, differential entrapment, evolution of oils, and the significance of tar belts, interstitial or non-producible oil, synclinal oil, etc.

End_of_Article - Last_Page 432------------