Considerable accumulations of shell-marl take place in fresh-water lakes, and the flat bottoms which mark the sites of lakes which have been drained are frequently dug to obtain this material.
"Geology"
James Geikie
When he taught school over in the bottoms, on the other side of the river, and was compelled to pay his fare when he travelled, he seldom travelled, and therefore put his money carefully away, but when he invested his savings in the Triumph, and the railroad company sent him an annual pass, he made up for lost time, and travelled up and down the road almost constantly, all his earnings being required to pay his expenses.
"The Mystery of the Locks"
Edgar Watson Howe
The citizens of Davy's Bend feared that the sun had been drowned by the flood in the heavens, as the people were being drowned by the flood in the bottoms, for its kindly face had not appeared in two weeks.
"The Mystery of the Locks"
Edgar Watson Howe