SELECTION OF PEAT LANDS FOR DIFFERENT USES 
5 
stage of disintegration. The variations are very numerous and con- 
stantly changing, particularly in drained peat lands the surface layers 
of which are under cultivation. For types of peat land in which soil- 
forming processes have become definitely established and horizons 
have appeared at different ranges of depth, the name of the locality 
CARBONDALE PEAT -PROFILE 2-3 
SPALDING PEAT - PROFILE i-2-3 
1 GREENWOOD PEAT —- PROFILE 2 
7 
F1G6. 3.—Specimen map of an area to show the distribution of types of peat land and the nomen- 
elature employed to designate them. Each pattern represents a specific profile by which the 
>haracters of the peat area have been distinguished. (Courtesy of Michigan Land Economic 
Survey in cooperation with the Bureau of Plant Industry) 
where these differences were first observed may be assigned to the 
index number of the type unit. A specimen map is given in Figure 3. 
Each pattern indicates the specific profile, shown in Plate 1, by which 
the character of the individual peat areas have been distinguished.