Diluvium, origin of term.
"The Student's Elements of Geology"
Sir Charles Lyell
No subject has lately excited more curiosity and general interest among geologists and the public than the question of the Antiquity of the Human Race-whether or no we have sufficient evidence in caves, or in the superficial deposits commonly called drift or "Diluvium," to prove the former co-existence of man with certain extinct mammalia.
"The Antiquity of Man"
Charles Lyell
These blocks are peculiarly abundant in the lower drift commonly called the "Diluvium gris."
"The Antiquity of Man"
Charles Lyell