The waters of six springs of Sekigane and one spring of Kaike were analyzed by the author in 1951. All the springs of Sekigane belong to the simple radioactilTe thermals. And Kaike Hot Spring belongs to a calcium chloride containing saline spring, its water temperature being 73,5℃.
The radon content of Sekigane Spring waters ranged from 57 to 137×10(-10) Curie units per liter.
