Make the outside mould of plaster, to save time in drying and the
expense in wood; and with this plaster enclose the irons [props]
both outside and inside to a thickness of two fingers; make terra
cotta. And this mould can be made in one day; half a boat load of
plaster will serve you.

Good.

Dam it up again with glue and clay, or white of egg, and bricks and
rubbish.

[Footnote: See Pl. LXXV. The figure "40," close to the sketch in the
middle of the page between lines 16 and 17 has been added by a
collector's hand.

In the original, below line 21, a square piece of the page has been
cut out about 9 centimetres by 7 and a blank piece has been gummed
into the place.

Lines 22-24 are written on the margin. l. 27 and 28 are close to the
second marginal sketch. l. 42 is a note written above the third
marginal sketch and on the back of this sheet is the text given as
No. 642. Compare also No. 802.]

712.

All the heads of the large nails.

[Footnote: See Pl. LXXVI, No. i. This drawing has already been
published in the "_Saggio delle Opere di L. da Vinci_." Milano 1872,