(Gates Collection, Seattle, WA)
Facsimile (Giunti, Florence 1987); ca. 1506-10; 29x22 cm
This 36-folio manuscript has changed hands twice in the last fifteen years. In 1980, it was purchased at auction by Armand Hammer from the estate of Lord Leicester; in 1994, it was acquired by Bill Gates at the Hammer estate auction. The analysis of movement of the water is a central theme, together with studies of geology (fossils, the circulation of water and natural disasters) and astronomy.
fols. 1v-2r: Sketches and studies of cosmology and of the reflected light (lume riflesso) of the Moon.
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