Book on Subtlety.

Andreas Osiander, the wonderful story of. 357 Andreas Osiander was a prominent German Lutheran theologian and a contemporary of Cardano.
Angel. see Intelligence. In the philosophy of the time, "Intelligences" were often equated with angels as celestial movers.
Snakes. see Serpents.
The aging of snakes. see Aging of serpents.
Animal of uncertain genus and form. 226
Animal, monstrous. 232
Animal that glows at night. see Cocoyum. original: "Cocoyum". This refers to the bioluminescent click-beetle of the Americas, often described by early naturalists.
Animals, perfect ones are of nine kinds. 226
Animals, why certain ones have a most pleasant scent. 232
Animals, why in some the cut-off limbs are regenerated. 226
Animal bodies, their potential in relation to the soul. 267
Animals live less long than plants. see Why plants.
Animals that smell good are generally small. 236
Animals found inside solid rocks. 245 This refers to the "toad in the stone" phenomenon, where living creatures were purportedly found inside quarried rocks.
Animals, parts of. see Parts of plants.
Animals, certain small ones that are long-lived. 262
Animal, each one has its own specific pulses. 245
Animals, poisonous. see Serpents.
Animals, all are armed against the six inconveniences of nature. 246
Animals, wild, how they may be tamed. 234
Animals that eat meat are more clever than the rest. 250
Animals ought not to have been delighted by any sense other than taste or touch. 280
Animal, whenever one abounds, another is born that feeds upon it. 235
Animal, every one feeds on the things from which it is generated. 235
Animal, why none exists with green hair. 168
Animals, why they rarely produce gems. see
Gems, true ones, why they are very rare in animals.
Animals, why certain ones born black cease to be black. 168
Animals, how they are generated from putrid heat. 51 This refers to the theory of "spontaneous generation," where life was thought to arise from decaying matter.
Animals born from putrid matter are of nearly as many kinds as the things that rot. 221
Animals born from putrid matter, why they end pains. 222
Animals, how they are generated. see Fetus.
Animals, insects, how they may be removed. see Insects.

Emotions of the mind, what they do. 291
Emotions of the mind, how they change the body. 291
Parts of the mind, as a knowing faculty. 290
Motion of a ring. 52
Cannibals original: "Anthropophagi". 255
Cannibals, why their gaze is terrifying. 337
Antimony. see Stibium. Antimony and stibium refer to the same metallic element, used in medicine and alchemy.
Cave. see Grotto.
Bees, why they do not produce eggs. 223
Bees, how they are generated. 221
Bees. see Bird of Paradise. original: "Manucodiata". Cardano, like many of his time, discussed the legendary Bird of Paradise under this name.
Aphronitrum. 134 A term for 'flower of nitre' or 'saltpetre' efflorescence, used in ancient chemistry.
Celery, so that it grows as large as possible. see Leek.
Praise of Apollonius. 314 Likely referring to the ancient philosopher and wonder-worker Apollonius of Tyana.
Water, why it sometimes stirs up fires. 28
Water, which kind is best. 83
Water, where it is lightest. 84
Water under the earth. 118
Water which is found everywhere underground. 118
Water, whether it exists under water. 122
Fresh water, how it may be obtained in the sea. 122
Tastes of waters. 83
Cause of the tastes of waters. 84
Colors of waters. 84
Causes of the colors of waters. 84
Differences in waters according to location. 85
Nature of acquired waters. 85
Coldest waters. 83
Waters that turn things to stone and change trees. 84 A reference to petrifying springs.
Waters, why they turn things to stone. 85
Lightest waters, why they rot slowly. 85
Things that corrupt water. 287
Corrupted water, how you may correct it. 287
Cause of cold waters. 83
Water, why it quickly loses a good scent. 120
Water on a dry surface, why it turns into round drops. see Quicksilver. original: "Argentum uiuum". This entry compares the surface tension of water to that of mercury.
Water, how it rises as much as it descends. 11
Water, why it rises as much as it descends. 75