Book on Subtlety.

Quicksilver original: "Argentum uiuum". Mercury was called "living silver" due to its liquid, mobile state at room temperature. passes through deer hide. — 138
Quicksilver pierces all metallic vessels. — 139
Why quicksilver gathers together into one of its own accord. — 139
What quicksilver is. — 140
Why quicksilver and water take a round shape in a dry place. — 140
Quicksilver is most tenacious. — 140
Quicksilver fouls gold. — 140
Quicksilver breaks gold. see Gold, smeared.
In what ways quicksilver may be hardened. — 140
Quicksilver is solidified in three ways. — 140
Quicksilver is extinguished In alchemy, "extinguishing" mercury usually refers to mixing it with another substance (like saliva or fat) until the visible globules disappear. by saliva. — 140
Quicksilver, if introduced, kills trees. — 141
Quicksilver kills all insects. — 141
Quicksilver, when heated, breaks vessels. — 141
Places abundant in quicksilver gush with water and are green. — 140
Quicksilver is closer to gold than to silver. — 154
Sublimated mercury. original: "Argentum sublimatum". This is mercuric chloride, a highly toxic substance used in medicine and alchemy. — 141
Sublimated mercury cures the plague. see Plague, cure for.
Why clay original: "Argilla" draws out impurity. — 337
Ram. see Wether. original: "Aries... l. Veruex". A wether is a castrated ram.
Of a ram. see Sheep.
A ram’s horn turned into asparagus. — 347 This refers to an ancient folklore belief that burying pieces of ram's horn would cause asparagus to grow.
Praise of Aristotle. — 314
Aristotle’s demonstrative reasoning. — 58
Aristotle’s reasoning that the world is eternal. — 80
Aristotle knew of silkworms. see Silkworms.
How you may pierce arms Meaning armor or weapons.. see Point.
The Armatura stone. — 193
Armenian earth. see Earth.
Spices. see Scented things.
Arsenic. — 137
Yellow arsenic. see Rosagallum. Yellow arsenic (orpiment) was often called "rosagallum" in medieval texts. — 137
Artephius's book on the types of divination. — 355 Artephius was a legendary medieval alchemist to whom many occult works were attributed.

Why poisons and scabies smeared on the arteries are cured. — 65
Arts recently invented. — 316
Arts which are aided by subtlety. — 317
Three arts which illuminate through subtlety. — 316
Four arts outstanding in subtlety. — 319
The more noble arts lie hidden, and what they are. — 318
The more noble arts of predicting the future. see Future.
The five-fold utility of the Great Art. — 308 Likely referring to the "Ars Magna," Cardano's famous work on algebra, or perhaps a general term for alchemy/hermeticism.
Wonderful examples of subtlety in craftsmen. — 319
Remarkable examples of soothsayers. — 255
Aspalathum is Sandalwood. — 133
Asphalt, which is Jewish Bitumen. — 133
Whether all stars have light. — 86
Stars of the southern pole. see Southern.
Why stars seem to twinkle. — 87
Stars are smaller and higher than they seem. — 87
Why stars seem lower than they are. — 88
Why all stars seem larger when they rise and set. — 88
Round stars, why they seem flat. — 89
That stars are very large and are at a very great distance from us. — 89
Why stars seem small. — 90
All stars have light and shadow. — 92
Whether the stars are solid. — 94
Why stars follow us as we walk, while banks recede from those sailing. — 112
The calculation for the height of the stars, how it is known. — 112
How the height of the stars is determined. — 114
How the magnitude of the stars is known. — 115
The Astrites stone. — 171
The Astroites stone Likely a fossil coral or a "star-stone" (sapphire) that shows asterism., and its wonderful power. — 171
Method of preparing black writing ink. — 218
Method of preparing gold and blue writing ink. — 218
Description of red ink. — 209
Blue ink. — 136
Ink. see Vitriol. original: "Calchantum". This refers to copperas or ferrous sulfate used in making ink.
Shoemaker's ink contains alum. — 136