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XIV. Anatomy, Zoology and Physiology: 820.
XIV. Anatomy, Zoology and Physiology: 820.
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XIV. Anatomy, Zoology and Physiology: 820.

820.

Of the flight of the 4th kind of butterflies that consume winged ants. Of the three principal positions of the wings of birds in downward flight.

425

Footnotes
  1. 119:425

    : A passing allusion is all I can here permit myself to Leonardo's elaborate researches into the flight of birds. Compare the observations on this subject in the Introduction to section XVIII and in the Bibliography of Manuscripts at the end of the work.

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