A method for drying the marsh of Piombino. [Footnote: There is a slight sketch with this text in the original.—Piombino is also mentioned in Nos. 609, l. 55-58 (compare Pl. XXXV, 3, below). Also in No. 1035.]
Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.