A treatise of artillery : containing, I.General constructions of brass and iron guns ... II. General constructions of mortars and howitzes, their beds and carriages. III. The dimensions of all other kinds of carriages used in the artillery. IV. The exercise of the regiment at home, and the service abroad in a siege or battle. V. Its march and encampment, ammunition, stores, and horses. VI. Lastly, the necessary laboratory workfor fire-ships, &c. : to which is prefixed, an introduction, with a theory of powder applied to fire-arms ...