抄録
The writer has found relationships among the NS-Quotients, the rain factors and the soil types in Japan, by considering the studies of Seki, Kamoshita, Swanson and others, and from the meteorological data obtained by the Central Meteorological Observatory, Tokyo. The relationships obtained are summarized in the following table : [table]Comparing the above-mentioned table with the results in Europe and the United States obtained by Jenny, it is understood that the NS-Quotient and the rain factor of each soil area in Japan are higher in figure than those of similar soil areas in Europe and the United States. This may be explained from the facts that the various soil types found in Japan are subject to heavier leaching than the corresponding soil types of other counries.
