and the rocks in the eastern district, on the estates of Whim, Lamancha, and Magbiehill, are those of the coal formation, comprising limestone, sandstone, shale, and coal.
(the rocks in the eastern district, on the estates of Whim, Lamancha, and Magbiehill; are; those of the coal formation)
the rocks in the eastern district, on the estates of Whim, Lamancha, and Magbiehill
are
those of the coal formation