⚠Page contains extensive blue digital highlighting on cross-references and page numbers.

Book on Subtlety.

B iij Signature mark identifying the sequence of pages in the printed book.

Topic	Page
The property of coral, see: Discerning future illnesses.
Coral.	178
A monkey's heart benefits the [human] heart.	348
The nature of the heart's motion.	271
The usefulness of the heart's motion, see: Motion of the pulse.
On dyeing hides with various colors.	210
On engraving leather.	288
Why we use carnelian for seals.	175
Carnelian.	175
The multitude of crows in Britain, see: Britain.
How horns may be softened.	322
Halo [Corona], see: Parhelia Sundogs or mock suns..
In what way a halo differs from a rainbow.	100
What a halo foretells.	100
Celestial bodies, see: Celestial bodies.
Different bodies cannot be in the same place.	6
Properties of the five regular solids.	307
The whetstone and its kinds.	185
Counterfeit whetstones that wear down gems.	181
In what things whetstones are tested.	185
For pains of the hip, see: Sciatica original: "Ischiae".
What crasis is and how it is made. Crasis: A medical term for the "mixing" or temperament of the four bodily humors.	122
The principle of twilights.	94
Chalk, see: Clay.
The island of Crete does not nourish serpents.	353
Crocodiles.	235
Saffron. original: "Crocus"	203
Whether raw things are more useful than cooked.	47
Why a crust hinders the melting of metals, see: Melting of metals.
How a cold grotto original: "crypta" is made.	54
Wonders of the crystal prism.	108
How crystal and glass produce those colors in the Sun, see: Rainbow.
That crystal is not ice.	177
Why a crystal has six surfaces.	177
Why some crystal can contain silver.	177
Crystal containing water.	177
The Ctenites stone. A stone or fossil shaped like a comb or bivalve shell.	192
How cucumbers are preserved.	287
The gnat. original: "Culex"	225
How gnats are kept away.	225
Not all gnats sting, see: Flies sting.
Tunnels original: "Cuniculi" under water.	118

Topic	Page
The principle of tunnels or mines.	36
Copperas, which is chalcitis. Copperas/Chalcitis: Historic names for metal sulfates (vitriol) used in making ink and dyes.	135
Copper, see: Cyprian bronze.
A miraculous cure for disease.	353
The pulse of those running, see: Pulse in those running.
The principle of chariots.	327
How the point of a weapon may pierce armor.	166
How the skin may be pierced without pain, see: Wound without pain.
The color of the skin is similar to the color of hooves and horns.	237
On erasing marks from the skin.	271
Two properties of the cylinder.	308

D

Topic	Page
He shows from history that demons exist.	363
The remarkable story of seven demons.	363
Those who have written a history of demons.	365
How demons can be seen naturally, see: The Dead.
Telchines demons. In Greek mythology, these were sorcerers and metalworkers of Rhodes.	364
What reasons suggest that demons are not solid.	365
Demoniac inspirations, see: Divine.
Grace [Decor], see: Beauty.
Two privileges of the ellipsis original: "defectionis". Referring to the geometric property of "falling short" in conic sections..	304
Fainting, see: Eclipse.
Dolphins.	238
Why dolphins are very tame.	238
The dolphin is almost the only one among fish that emits a voice.	261
Why certain dense things are light.	126
Why dense things are thin.	266
Human teeth, see: Human teeth.
On whitening the teeth.	330
Distilled waters, see: Distilled waters.
Why distillation removes certain scents.	206
On distillations or catarrhs from the head. In Renaissance medicine, fluids "distilling" or dripping from the brain were thought to cause various illnesses.	353
The utility and types of distillation.	42
God knows Kings and Wise men, see: People.
God knows all things.	369
What God is.	370
God and the intelligences lack a name.	371
Why the fourth beneath the fifth is dissonant. Musical intervals: the diatessaron and diapente.	278
The day reveals many things and hides others, see: Time [reveals] many things.
A day of six months, see: Darkness.

Floods

original: "Diluvia"