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[Footnote: A comparatively small portion of Leonardo's notes on
water-power was published at Bologna in 1828, under the title: "Del
moto e misura dell'Acqua, di L. da Vinci".]
Admonition to readers.
3
.
Let no man who is not a Mathematician read the elements of my work.
The disorder in the MSS.
4
.
Begun at Florence, in the house of Piero di Braccio Martelli, on the
2nd day of March 1508. And this is to be a collection without
2
order, taken from many papers which I have copied here, hoping to
arrange them later each in its place, according to the subjects of
which they may treat. But I believe that before I am at the end of
this [task] I shall have to repeat the same things several times;
for which, O reader! do not blame me, for the subjects are many and
memory cannot retain them [all] and say: 'I will not write this
because I wrote it before.' And if I wished to avoid falling into
this fault, it would be necessary in every case when I wanted to
copy [a passage] that, not to repeat myself, I should read over all
that had gone before; and all the more since the intervals are long
2
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