Calculate the measurement of Milan and Suburbs.

Find a book that treats of Milan and its churches, which is to be had at the stationer’s on the way to Cordusio.

Discover the measurement of Corte Vecchio.

Discover the measurement of the castello.

Get the master of arithmetic to show you how to square a triangle.

Get Messer Fazio to show you about proportion.

Get the Brera Friar to show you De Ponderibus.

Talk to Giannino, the Bombardier, re. the means by which the tower of Ferrara is walled without loopholes.

Ask Benedetto Potinari by what means they go on ice in Flanders.

Draw Milan.

Ask Maestro Antonio how mortars are positioned on bastions by day or night.

Examine the Crossbow of Mastro Giannetto.

Find a master of hydraulics and get him to tell you how to repair a lock, canal and mill in the Lombard manner.

Ask about the measurement of the sun promised me by Maestro Giovanni Francese.

Try to get Vitolone, which is in the Library at Pavia, which deals with the mathematic.

To-do list by Leonardo da Vinci, circa 1490.
Essenz Regular Italic by Georg Salden, available at www.ludwigtype.de