For the purpose of getting rid of the water, and obviating the flooding of such deep workings, it has been found necessary to construct drainage works of some magnitude.
As regards navigation, only such taxes or duties were to be levied as had "the character of an equivalent for services rendered to navigation itself"; and it was further provided that (Article 16) "The roads, railways or lateral canals which may be constructed with the special object of obviating the innavigability or correcting the imperfection of the river route on certain sections of the course of the Congo, its affluents, and other waterways, placed under a similar system as laid down in Article 15, shall be considered, in their quality of means of communication, as dependencies of this river and as equally open to the traffic of all nations.
The precedence of the Caesars indeed, was always admitted by the Arsacids; and- Phraates IV soon entered into a state of dependency on Rome by sendinl (9 B.C.) four of his sons as hostages to Augustusa convenien method of obviating the danger threatened in their person without, the necessity of killing them.
Other improvements were: the gun was sighted on each side, tangent scales dropping into sockets in a sighting ring on the breech, thus enabling a long scale for all ranges to be used, and the foresights screwing into holes or dropping into sockets in the trunnions, thus obviating the fouling of the line of sight, and the damage to FIG.
The particular site of Immingham was chosen because the deep-water channel of the Humber, which lower down runs midway between the shores, here makes an inward sweep and leads right to the dock gates, thus obviating much initial dredging, providing ingress and egress at any state of the tide, and rendering the towage of the vessels unnecessary.