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| That the heads of those standing by may appear like those of horses or donkeys. These were common optical illusions or "parlor tricks" achieved through specific lighting or the burning of certain substances. | 65 |
| Extractions of water and oil. | 92 |
| Torches that are not extinguished by the winds. | 49 |
| That a painted face may turn pale. | 62 |
| That a notable face may appear thin and pale. | 64 |
| How fascinations term: "Fascinations" (the historical belief in the power to cast spells or influence others through the gaze or charms). are made. | 87 |
| Iron and its medicines original: "medicinæ" (preparations or chemical treatments used to alter the metal's properties).. | 103 |
| To dye iron with the color of copper. | 104 |
| To dye iron with the color of gold. | 104 |
| To change iron into copper. | 104 |
| How multi-colored offspring original: "Fœtus"; likely referring to the breeding of variegated livestock or plants. are produced. | 76 |
| How a fig may be made equally white and black. | 40 |
| To make dried figs original: "ischiadas". sleep-inducing or purgative. | 43 |
| To throw flame from a distance. | 50 |
| To produce flowers and fruits early or late. | 29. 30. 31. |
| The preservation original: "conditura" (the pickling or curing process). of flowers and fruits. | 33 |
| That a flower may be dyed in various colors. | 40. |
| To remove brittleness original: "Friabile tollere". Likely a metallurgical secret for making metals more malleable.. | 97 |
| How a fruit composed of different parts is made. | 32 |
| To make fruits and flowers sweeter and more fragrant. | 36. & 37. |