(1) (p. 47). Etigene Muntz, Leonardo do Vinci, Artist, Thinker, and Man of Science, 2 vols., New York, 1892. Vol. II., p. 73.
sirNizBhhcJGUH19wv7/+N5vtiZjV/oAtSzbr3MXYk6omNjRxrGXKXGSIPytOSWC
