Abstract
1) When the constituents of the rice plant which was cultured in the water Solution was analysed, generally the plants, cultured in the Solution with silicic acid, had the more following ingredients in ears than the plant, cultured in the Solution without silicic acid : - ash, silicic acid, phosphoric acid, sulphuric acid, potash, ferric oxide, and magnesia 2) In the water culture, we should add silicic acid from 0.6 to 3mg. in the 1 litre culture Solution in order to raise rice completely. 3) There was intimate relation between the quantities of manuring of phosphoric acid and silicic acid which might be useful for the growing of rice and barley plants. 4) The growth of the barley plants which were cultured in the water solution without silicic acid, were worse than that of the plants which grew in the Solution with silicic acid. Note. 1. The culture solution of this experiment was follows : [table] Note 2. Water solution was exchanged every 1 to 5 days. Note 3. The volume of the celluloid pot was about 1 litre.
