The soil of Takesima Island.

Takeshima Island locates in the Inland Sea 2.5 km. south from Aio village. It is 2km. In circumference, and 10m. High from the sea level. It consists of crystalline schist in general, though granite is found in a very small area. The soil derived from the crystalline schist holds total nitrogen 0.5061%,total phosphate 0.161%, potassium 0.625% and humus (including water) 26.26%. The pH of the soil is 4.3-5.6. The water of a small well locating at the northside of the island contains solid matter0.028% (in 1l.) , chloride 0.133g. And organic matter 0.0168g. Its pH is proved to be6.3.