Book on Subtlety


Pottery vessels. See: Vessels.	Why the leaves of herbs are larger than the leaves of trees. See: Trees, why not [the same].
Figures in stones. See: Figures of stones.	Why leaves of plants are all green. 215
Properties of geometric figures. 303	Leaves made for the sake of flowers and fruits. 216
The privilege of all rectilinear figures. 306	Leaves of plants consist of a certain number. 215
How male sons are procreated. 259	The annual or long-term turning of leaves in plants. 213
All sons retain something of their father or grandfather. 260	Why the veins of leaves are unequal Original: "impares"; likely referring to odd numbers or asymmetrical branching.. 217
How talented sons may be procreated. 347	Of laurel or juniper leaves. See: Laurel leaves.
The cause of the similarity of sons to parents. 259	Why bellows ignite a fire, and where they are most necessary. 28
On the generation of sons. 347	In what manner the motion of bellows [occurs]. 30
How provision should be made for sons who die in infancy. 347	The utility of bellows in liquid metals. 50
Why we love sons more than harlots. 370	Why springs boil in certain places. 82
A thread around an egg does not burn in fire. 49	Springs dripping oil Referring to naturally occurring petroleum or bitumen.. 84
What flame is. 27	The cause of springs dripping oil. 84
Why flame never rests. 27	Why ants produce eggs. See: Bees, why they do not produce eggs.
Flame does not remain the same. 27	Certain wonderful kinds of ants. 225
Why flame mostly rises. 27	On keeping away ants. 348
Why flame is more lively than other fire. 28	Every kind of fossil original: "fossilium"; in this era, this referred to anything dug out of the ground, including minerals and ores. has something that shines. 135
Causes of great flames. 28	Praise of Francesco Duardo. 159
A great flame is extinguished with difficulty for three reasons. 29	How it is possible to fry fish in paper. 48
Why almost all flowers smell good. 197	Cold is nothing but the absence of heat. 41
Why flowers open in the morning. 213	The works of cold. 333
Why flowers are various. 215	How fruits with a hard rind grow green again. 217
By what art flowers are distinguished by colors by nature. See: Variety of colors.	How you may have early-ripening fruits. 283
Why no excellent fruit [comes] from fragrant flowers. 203	How you may have late-ripening fruits. 283
Why no river is salty original: "falsum"; likely a typesetter's error for "salsum" (salty).. 77	Lest fruits rot on the tree. 283
Rivers dry up the seas. See: Seas are dried by rivers.	How fruits plucked from a tree may be preserved. 287
Rivers swell most in the morning. 78	How fruits may change color. 284
The origin of rivers. 76	How fruits may be born without a pit. 284
Rivers under the earth. 81	How fruits from the same branch can be of different colors. 284
How one might safely swim across rivers. 344	That fruits or vegetables may obtain a certain peculiar power. 285
Rivers. See: Rivers.	How fruits may attain whatever shape you wish. 352
The largest rivers. 77	Lightning. See: Thunderbolt.
The wonderful size of a silver mine. 129	Precaution against thunderbolts. 33
The wonderful depth of mines. 148	Why a thunderbolt has such great force. 32
Female. See: Woman.	Why a thunderbolt rarely strikes columns. 33
How a fetus is generated in the mother's womb. 267	How a thunderbolt melts coins while the purse is unharmed. 33
Why leaves of trees fall. See: Trees, why leaves fall.

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