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Codex Leicester, 16v. - Page with eight drawings and 19 observations ("18 cases") on the courses of rivers and the typologies of "objectives". Leonardo includes observations on how to collect the silt during and after inundations; on the crossing of tributaries that augments the force of the current depending on the acute angle, which in turn is changed (Fig. 1 relevant to the course of the Arno at Florence near Ponte alle Grazie). He then illustrates the forms, functions and opportunities of the different "objectives": oblique, circular, squared, flexible (to limit erosion and increase the deposit of soil), placed against the bank (as in Florence at the level of the "Spedale del Ceppo", to form a protective shield).
Codex Leicester, 16v. - Page with eight drawings and 19 observations ("18 cases") on the courses of rivers and the typologies of "objectives". Leonardo includes observations on how to collect the silt during and after inundations; on the crossing of tributaries that augments the force of the current depending on the acute angle, which in turn is changed (Fig. 1 relevant to the course of the Arno at Florence near Ponte alle Grazie). He then illustrates the forms, functions and opportunities of the different "objectives": oblique, circular, squared, flexible (to limit erosion and increase the deposit of soil), placed against the bank (as in Florence at the level of the "Spedale del Ceppo", to form a protective shield).
© Alessandro Vezzosi

Last update 06/mar/2008