Data relating to experiments; shrinkage of earth on drying.
The following is the solid content of the box, which I forgot tomeasure last week.
211.44 Cubic inches
Your affec son. | Leonard Darwin
Iron box of earth.
Measurement after being well dried before the fire. = 180.8 Cubic inches.This shews that it has diminished 10 per cent on the original earth,without taking into account internal shrinking, although cracks werevisible on the surface.f2