F.M. Broadhurst &gt; &gt;There are many other evidences that coal seams were formed rapidly, &gt;probably by transportation of massed plant accumulations by flooding &gt;waters, interspersed by alternative flows of sand or silt or lime mud from &gt;other directions.
(waters; interspersed; by alternative flows of sand or silt or lime mud from &gt;other directions) (coal seams; were formed rapidly; )
waters coal seams
interspersed were formed rapidly
by alternative flows of sand or silt or lime mud from &gt;other directions