The letters are a particularly precious historical discovery because they contain echoes of a vast mass of lost material.

His mind began seeing connections, joining up the dots of world history, carving a narrative through the vast mass of knowledge.

However, he did not venture to apply this vast mass of property to the general purposes of the government.

During these migrations the plains and hillsides on every side were thickly covered by one vast mass of springbok, packed like sheep in a fold.

He also left materials for a monograph on luminous beetles, including fireflies and glowworms, and a vast mass of miscellaneous notes of a scientific character.