Toronto, Ontario | 105,000| | 105,000| Standard Forging Co., | | | | Chicago, Ill. | 15,000| | | Bethlehem Steel Co., | | | | Bethlehem, Pa. | 32,000| | | American Clay Machine Co., | | | | Bucyrus, Ohio | | | 15,000| | | | | _14-inch seacoast gun shell._ | | | | | | | | Carnegie Steel Co., | | | | McKees Rocks, Pa. | 10,000| 220| | Watertown Arsenal, | | | | Watertown, Mass. | 9,000| | | Washington Steel & Ordnance Co., | | | | Washington, D. C. | | | 80| | | | | _16-inch seacoast | | | | howitzer shell._ | | | | | | | | Washington Steel & Ordnance Co., | | | | Washington, D. C. | 140| | 140| ---------------------------------+----------+---------+---------+--------- CHAPTER VI. SIGHTS AND FIRE-CONTROL APPARATUS. At the threshold of the war with Germany we were confronted with the problem of providing on a large scale those instruments of precision with which modern artillerists point their weapons. As mysterious to the average man as the sextant and other instruments which help the navigator to bring his ship unerringly to port over leagues of pathless water, or as those devices with which the surveyor strikes a level through a range of mountains, are the instruments which enable the gunner to drop a heavy projectile exactly on his target without seeing it at all. The old days of sighting a cannon point-blank at the visible enemy over the open sights on the barrel of the weapon passed with the Civil War. As the power of guns increased and their ranges lengthened, the artillerists began firing at objects actually below the horizon or hidden by intervening obstacles. These conditions necessarily brought in the method of mathematical aim which is known as indirect fire.