Gravel content ranges from 0 to 40 percent. Reaction ranges from extremely acid to strongly acid. This is the Makinen series which are from outside LRR R and S. The Makinen soils receive less 31 inches of precipitation and have less gravel in the substratum. Freetown and Paupack are similar soils in related families. Freetown soils have organic layers greater than 51 inches thick.
Paupack soils are underlain by loamy skeletal or clayey skeletal mineral material.
Swansea soils are in bogs that range from small enclosed depressions to bogs of several hundred acres in size. They are on outwash plains, till plains and moraines. Slope ranges from 0 to 1 percent. Mean annual temperature is 45 to 50 degrees F. and mean annual precipitation is 40 to 50 inches. The frost-free period is 120 to 180 days.