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“...50
often higher than at the Lesser Antilles. Physically they are
heavy clays, loams or sands, so that water movability and
tillage vary.
Cuba is constructed of many kinds of rocks, it has in its
different parts, various tropical climates and a varying flora.
Its soils contain therefore many kinds of minerals and vary
both physically and chemically.
Between the two most important and most occurring tropical
soils, viz. the red earths and grey earths proved to exist differ-
ences not only mineralogically but physically and chemically
as well.
This especially stands out most clearly if you compare the
soils of a region with the same climate and flora but a different
parent rook. But also otherwise the contrasts continue to exist.
Mineralogically the red earths have much more opaque
components and a chiefly kaolinitic clay mineral. The grey
earths have however more dark minerals (pyroboles and
epidotes) and a principally montmorillonitic clay mineral.
Physically the...”
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