The The siege dykes were cut, the land flooded, but again and again and relief a relieving force was baulked in its attempts to reach of Leiden.
The dykes were cut, and Don Frederick, fearing for his communications, beat a hasty retreat (August).
A region where volcanic activity has led to the embedding of dykes or bosses of hard rock amongst softer strata produces a plain broken by abrupt and isolated eminences.'
He would never give up Holland; rather than do that, he would cut the dykes and give back that land to the sea.
After passing through some narrow gorges near Sisteron the bed of the river becomes wide, and spreads desolation around, the frequent overflows being kept within bounds by numerous dykes and enbankments.