[Footnote: The sketch on the same page as this text represents two poles one across the other. At the ends of the longest are the letter c and d. The sense of the passage is not rendered any clearer.]
1428.
The great bird will take its first flight;— on the back of his great swan,—filling the universe with wonders; filling all writings with his fame and bringing eternal glory to his birthplace.
[Footnote: This seems to be a speculation about the flying machine (compare p. 271).]
1429.
This stratagem was used by the Gauls against the Romans, and so great a mortality ensued that all Rome was dressed in mourning.
[Footnote: Leonardo perhaps alludes to the Gauls under Brennus, who laid his sword in the scale when the tribute was weighed.] 1430.
Alberto da Imola;—Algebra, that is, the demonstration of the equality of one thing to another.
1431.
Johannes Rubicissa e Robbia.