Undated memoranda (1435-1457).

1435.

The book of Piero Crescenze,—­studies from the nude by Giovanni
Ambrosio,—­compasses, —­the book of Giovanni Giacomo.

1436.

MEMORARDUM.

To make some provisions for my garden, —­Giordano, De Ponderibus[Footnote 3:  Giordano.  Jordanus Nemorarius, a mathematician of the beginning of the XIIIth century.  No particulars of his life are known.  The title of his principal work is:  Arithmetica decem libris demonstrata, first published at Paris 1496.  In 1523 appeared at Nuremberg:  Liber Jordani Nemorarii de ponderibus, propositiones XIII et earundem demonstrationes, multarumque rerum rationes sane pulcherrimas complectens, nunc in lucem editus.],—­the peacemaker, the flow and ebb of the sea,—­have two baggage trunks made, look to Beltraffio’s [Footnote 6:  Beltraffio, see No. 465, note 2.

There are sketches by the side of lines 8 and 10.] lathe and have taken the stone,—­out leave the books belonging to Messer Andrea the German,—­ make scales of a long reed and weigh the substance when hot and again when cold.  The mirror of Master Luigi; A b the flow and ebb of the water is shown at the mill of Vaprio,—­a cap.

1437.

Giovanni Fabre,—­Lazaro del Volpe,—­ the common,—­Ser Piero.

[Footnote:  These names are inserted on a plan of plots of land adjoining the Arno.]

1438.

[Lactantius], [the book of Benozzo], groups,—­to bind the book,—­a lantern,—­Ser Pecantino,—­Pandolfino.—­[Rosso]—­a square, —­small knives,—­carriages,—­curry combs—­ cup.

1439.

Quadrant of Carlo Marmocchi,—­Messer Francesco Araldo,—­Ser Benedetto d’Accie perello,—­Benedetto on arithmetic,—­Maestro Paulo, physician,--Domenico di Michelino,-- ...... of the Alberti,--Messer Giovanni Argimboldi.

1440.

Colours, formula,—­Archimedes,—­Marcantonio.

Tinned iron,—­pierced iron.

1441.

See the shop that was formerly Bartolommeo’s, the stationer.

[Footnote:  6. Marc Antonio, see No. 1433.]

1442.

The first book is by Michele di Francesco Nabini; it treats on science.

1443.

Messer Francesco, physician of Lucca, with the Cardinal Farnese.

[Footnote:  Alessandro Farnese, afterwards Pope Paul III was created in 1493 Cardinal di San Cosimo e San Damiano, by Alexander VI.]

1444.

Pandolfino’s book [Footnote 1:  Pandolfino, Agnolo, of Florence.  It is to this day doubtful whether he or L. B. Alberti was the author of the famous work ‘Del Governo della Famiglia’.  It is the more probable that Leonardo should have meant this work by the words il libro, because no other book is known to have been written by Pandolfino.  This being the case this allusion of Leonardo’s is an important evidence in favour of Pandolfino’s