The caves of the White Limestone of north central Jamaica are dived into the classes quiet-water solution caves, stream caves, and vertical caves. Their mode of origin distinguishes the three. The generalized hydrology of the area is considered. Three hydrologic conditions -steeply inclined movement, gently inclined movement, static storage -- are recognized and studied separately. The importance of vertical shafts, solution tubes, joints, and honeycomb limestone in the downward transport of water are discussed and the need for further research is recognized. Stream caves are the prime agents for the lateral movement of ground water. Possible reasons for the poor development of underground stream channels in the region are discussed. Almost all that is known about water in long term storage comes from studies in the drained quiet-water solution caves. The possibilities of exploiting this water are considered.