T A B L E.

they have been spiked, without losing time, one will be able to use them with speed. 175

Chap. 25. On the method of extracting a Ball that for a long time might have been wedged in, or held by rust inside the bore of an Artillery piece. 176

Chap. 26. On the method of breaking Artillery pieces with the greatest speed possible. 178

Chap. 27. On the Platforms upon which the Artillery plays, and on their proportion and form. 180

Chap. 28. On the Gabions, or Baskets to cover oneself from the Cannonades of the enemy Artillery. 182

Chap. 29. On the method of repairing and accommodating ruined touch-holes of the pieces, when from too much shooting they become too wide and poorly formed. 185

Chap. 30. On the method of forming the Bronze grain for the aforementioned purpose of repairing any ruined touch-hole. 188

Chap. 31. On the method of rounding and reducing to perfection the Balls that have come out of their molds crooked, horned, and poorly formed. 189

Chap. 32. On the Geometric Caliber, which is used for the purpose of knowing the shot capacity of any Artillery piece. 190

Chap. 33. Which treats in what manner one can know how to say, by the Diameter of a Ball whose weight is determined, what all the Balls in the World weigh, there being no difference in the weight of one material compared to another. 194

Chap. 34. On the method of firing salutes in times of joy and festivities. 196

Chap. 35. On the fuses, or priming trails, and the method of making them and using them to light Mortars and other Machines in time. 198

Chap. 36. On the iron Marks that serve to extract Balls from a Munition. 199

Chap. 37. On the method of writing secretly to be able to give notice to friends in time of a siege, or from one Camp to another. 201