The author observed three facts, on the growth of coast-(Nakamura) and vasin-rice-plant (Bange), as following;- 1. Difference between max. and min. air-temperature are larger at the vasin, than at the coast. 2. Plant growth at the early stage in coast-rice are in advance over the vasin-rice plant, and the number of stem in vasin exceeded than in the coast. 3. The period from fertilization to ripening. of rice plant were prolonged at coast compared with at vasin.
