Hoc in volumine haec opera continentur

On the nature of various fountains, rivers, and lakes. Chapter 3.
On the experiments of waters. Chapter 4.
On the conduits of waters. Chapter 5.

A decorative initial L is depicted. In the ninth book, in which he discourses on gnomonic matters and the reasons for clocks, these are contained:
Plato's invention for surveying a field. Chapter 1.
On the square. Chapter 2.
How a portion of silver mixed with gold can be detected and discerned in a finished work. Chapter 3.
On the gnomonic reasons found from the rays of the sun through shadows, and on the world and the planets. Chapter 4.
On the course of the sun through the twelve signs. Chapter 5.
On the other stars to the right and left of the zodiac. Chapter 6.
On the stars to the left of the zodiac. Chapter 7.
On the reason, use, and invention of clocks. Chapter 8.

A decorative initial L is depicted. In the tenth book, in which he reasons on machinery, these are contained:
On what a machine is and its difference from an engine, its origin and necessity. Chapter 1.
On the traction machines of sacred buildings and public works. Chapter 2.
Another genre of traction machine. Chapter 3.
Another more subtle genre of machine. Chapter 4.
On the invention of stone quarries. Chapter 5.
On machinery for stretching and rounding for the lifting of loads. Chapter 6.
On the genres of engines for drawing water, and first on the tympanum water wheel. Chapter 7.
On wheels and tympanums for grinding flour. Chapter 8.
On the reason of the screw. Chapter 9.
On the ethesibica automatic/self-moving machine. Chapter 10.
On hydraulic [engines]. Chapter 11.
On the reason by which we measure a journey completed by carriage or ship. Chapter 12.
On the reasons for scorpions and ballistas, and first on scorpions and catapults. Chapter 13.
On ballistas. Chapter 14.
On the tensions and temperings of ballistas and catapults. Chapter 15.
On siege matters, how both leaders and drivers and cities can be defended by machines, and first on the invention of the battering ram and its machine. Chapter 16.
On the tortoise prepared for the filling of ditches. Chapter 17.
On other genres of tortoises. Chapter 18.
Peroration of the work. Chapter 19.