of the most memorable things

from the twenty-one books On Subtlety.

term: Subtlety. For Cardano, "subtlety" (subtilitas) is a specific intellectual category. It refers to the power of the mind to understand things that are difficult to perceive, or the quality of things that are complex, refined, or hidden from the senses.

Fir tree original: "Abies" the only tree that grows straight of its own accord. - - - - - 201
Mite original: "Acaris" the smallest of animals. - - - - - 225
Accents, the power of. - - - 335
Vinegar, how it may be made instantly. - 282
Vinegar, how it may be turned into water. 205
Agate, and its marvelous variety. - 172
Agate, how a marvelous one is made. - 172
Diamond original: "Adamas". - - - - - - 166
Diamond and crystal, the difference between them. 167
Diamond dust. see Point of a weapon. original: "l. Cuspis teli". The "l." is an abbreviation for "lege" (read) or "vide" (see), used here as a cross-reference.
Diamond, its powers. - - - 167
Diamond from Sapphire. see Sapphire.
Adulterating meaning: counterfeiting or faking gems, the method for. see Gems, adulterating.
Buildings, certain ones that heat up by means of copper. - - - - - - 111
Air, tempered air is by nature not hot. - - - - - - 26
Air suddenly cooled, why it brings so much harm. - - - - 53
Air, why it was created. - - - 53
Air, why it is not felt. - - 62
Air in winter, why it turns into a round shape. 63
Air, its contrary powers. - - 63
Air, beans spoil it. - - - 353
Air, the causes of its rot. see Causes of the plague.
Air, a sign of its healthfulness is an abundance of birds. 239
Copper original: "Aes". In this period, "aes" could refer to copper, bronze, or brass.. - - - - - - 158
Copper, eternal in constructions. 158
Copper from iron. see Iron.
Copper, its change into silver. see Counterfeit silver.
Copper, the "flower" of term: flos aeris. A term for the fine scales or oxidation that forms on copper when heated.. - - - - - 143
Copper, the scale of. - - - - 143
Verdigris original: "Aerugo". - - - - - 143
Copper, natural Cyprian. - - 158
Copper, artificial Cyprian. - 158
Summer, why it is not everywhere at all times. - 111
Summer, why southern shadows appear in the morning and evening. - - - - - 100
Eternal things, to be and to be able are the same. 368

Ether The "fifth element" that fills the universe above the sphere of the moon., where it is and what it is. - 26
Ether, whether it is thinner than fire. - - 44
Ether, how it is moved. - - 94
Ether and water, their similarity and difference. - - - - - - 85
Ethiopians. see Indians.
Age original: "Aeuuũ" (Aevum). Often used to mean eternity or a very long duration of time., what it is. - - - 368
Inspiration original: "Afflatus". Can also mean a divine breath or a sudden breeze., what it is. - - - 368
Lamb. see Sheep.
Agrippa’s books not yet published. Refers to Heinrich Cornelius Agrippa, a famous 16th-century occultist and polymath. - 352
Alabandine stone. A type of deep red gemstone, likely a variety of garnet. - - - 193
Alabaster. see Types of marble.
Alcatraz bird. In the 16th century, this name was used for various large sea birds, including the pelican or the frigate bird. - - - - 241
Elk original: "Alces", the animal. - - - - 231
Al-Kindi, praise of. Al-Kindi was a famous 9th-century Arab philosopher and scientist. - - - - 315
Alchemical matters. see Chemical matters.
Alexander the Great, his sweet-smelling breath. - - - - - - 197
Seaweed. - - - - - - 210
Seaweed, why it is soft. - - - 237
Algebra, praise of. - - - - 315
Garlic, its marvelous power. - - - 281
Garlic, why its power is greatest. - - 346
Liver-colored Aloe, why its leaves are fat. 208
Aloe wood. see Eaglewood original: "Xiloaloes". A fragrant wood used in incense..
Altitude of a tower, how it can be determined with a mirror. - - 275
Alum, "catina." see Salt of Alkali.
Alum, "feathered" term: Alumen plumae. A fibrous variety of alum, sometimes confused with asbestos.. - - - - 131
Alum, "rock" original: "rochæ", which is also called liquid. - - - - - - 131
Alum, "scaiola." - - - - 131
Love less, those who see more sharply. - 276
Lovers, sometimes prohibited from Venus meaning: sexual intercourse because of love. - - - 277
Love potions original: "Amatoria ueneficia". - - - 349
Amber. - - - - - - 133
Ambergris original: "Ambra canis". A rare, fragrant substance found in the ocean, produced by sperm whales. or Amber. - - 133
Amethyst. - - - - - 178
Ammochrysos stone. Literally "sand-gold" stone, a gem that appears to have gold sand inside it. - - - 192
Love, why it tortures even those who are unwilling. - 276
Amphora, the capacity of. - - - 282
Anchor, how it is secured in the sea. - 199.