GARDEN RIVERS. When fresh running water can be easily obtained, it is usual to introduce streams into a garden, arranged to wind through the grounds in an irregular and interesting manner. A Garden River may have its source indicated by a low waterfall or it may appear to originate in a pool with a mossy spring. A rivulet is often constructed in conjunction with a lake of which it forms the natural outlet. In the famous Koraku-En garden at Okayama, a small stream is carried from the lake in a serpentine course, part of it supplying water to a marsh planted with irises and water-lilies, and a portion serving to carry the current through a building intended for certain summer pastimes.
