In Hamamura and Kachimi Hot-Springs, the chloride and sulfate content and water temperatures of well waters and the amounts of chloride and sulfate fixed to the soil were determined with the samples collected from vmions parts of the mineral spring districts. The chloride and sulfate content and warter temperatures of well waters were higher in the samples collected from the thermal spring districts than in the samples collected from its neighbourhood, but for the amounts of chloride and sulfate fixed to the soil, no difference was recognized. As the existence of other sources whlch would supply the chloride, sulfate and heat to the well waters is not expected, the difference in the chloride and sulfate content and water temperatures of well waters, between the samples collected from the thermal spring districts and its neighbourhood, seems to he due to the effects of the thermal springs.
