Studies of water , by leonardo da vinci , 1510 , sketch and study , High Renaissance style , allegories and symbols, rivers and waterfalls, Text, Grass family
A page of a book with a drawing on it.
A page of a book is visible.  The page is yellowed with age.  There are two images on the page.  One is a drawing of a nest and the other is a sketch of a box.  At the bottom of the page is some text written in a foreign language.