Genesis and Morphology of the Brown Forest Soils of Eastern United States

The brown-forest soils* of eastern United States, as outlined by Dr. Marbut, () occupy a central position in the great area of pedalfers, or leached soils. On the Atlantic Coast these soils extend from southern Maine to Virginia. To the west they join the prairie in Indiana, however, two prong-like areas extend further west, one to the northwest into Minnesota, the other to the southwest across southern Missouri and northern Arkansas. To the north, where the temperature is somewhat cooler, is the area of true podzol soils, which have been discussed in the preceding paper. To the south, where the climate is warmer, are the yellow and red soils. To the west where the rainfall is somewhat less is the great area of humid prairie soils. It is evident that the brownforest soils occupy an intermediate situation.