温泉地の井戸水中並びに土壤に附着しているCl(-), SO(4)(2-)について（第3報）　島根県志学溫泉，湯抱溫泉

1) In Shigaku Hot-Springs, the amounts of chloride and sulfate fixed to the soil were determined with the samples collected from various parts of the thermal spring district and its neighbourhood. The amounts of chloride and sulfate fixed to the soil were greater in the samples from the thermal spring district than in those from its neighbourhood. As the existence of other sources which would supply the chloride and foulfate to the soil is not expected, the difference in the amounts of chloride and sulfate, between the samples from the thermal spring district and it; neighbourhood, seems to be due to the effects. of thermal springs. 2) In Yugakai 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 various parts of the mineral spring district. The water temperatures of well water samples from the district which has the mineral springs with higher temperatures, were higher than those from the district which has the mineral springs with lower temperatures, but for the chloride and sulfate content of the well water samples and the amounts of chloride and sulfate fixed to the soil, no difference was detected. As the existence of other sources which would supply the heat to the water is not expected, the difference in the water temperatures, between the samples from the district which has the mineral springs with higher temperatures and the district which has the mineral springs with lower temperatures, seems to be due to the effects of the mineral springs. On the other hand, for the chloride and sulfate content of well water samples and the amounts of chloride and sulfate fixed to the soil, no difference is recognized.

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