by all of Leonardo's biographers. They show notations referring to the master's petty expenses, which are recorded with painful exactitude as if coming from a pedantic and strictly parsimonious family father, while there is nothing to show that he spent greater sums, or that the artist was well versed in household management. One of these notes refers to a new cloak which he bought for his pupil Andrea Salaino:[1]
| Silver brocade | Lira | 15 | Soldi | 4 |
| Crimson velvet for trimming | ” | 9 | ” | 0 |
| Braid | ” | 0 | ” | 9 |
| Buttons | ” | 0 | ” | 12 |
Another very detailed notice gives all the expenses which he incurred through the bad qualities and the thieving tendencies of another pupil or model: “On 21st day of April, 1490, I started this book and started again the horse.[2] Jacomo came to me on Magdalene day, 1490, at the age of ten years (marginal note: thievish, mendacious, willful, gluttonous). On the second day I ordered for him
