Imogolite in some ando soils

It was reported in a preceding paper7) that the Ando soils from Uemura, Choyo, and Kawanishi contained an unknown mineral colloid which was distinctly different in some respects from coexisting allophane. In the Uemura soil, this clay fraction made up more than 20 per cent of the total clay and more than 6 per cent of the soil7). The results were used by the senior author in partial requirement for the degree of D. Agr., The Kyushu University, 1961. The results were used by the senior author in partial requirement for the degree of D. Agr., The Kyushu University, 1961. Notes The results were used by the senior author in partial requirement for the degree of D. Agr., The Kyushu University, 1961.