Later an American Palestine Exploration Society was organized. This Society employed Mr. Rudolph Meyer, an engineer, to make a map of Palestine, and from 1875 to 1877 also employed Rev. Selah Merrill, who afterward was for many years the U. S. Consul at Jerusalem, as explorer. Dr. Merrill gathered much archæological information, especially in the country east of the Jordan.[34] =4. Palestine Exploration Fund.=--As a result of the interest engendered by the work of Robinson, Lynch, and others, the Palestine Exploration Fund was organized in London in 1865. By this act a permanent body was created to foster continuously the exploration of the Holy Land, and to rescue the work from the fitful activities of individual enterprise. Such enterprise could supplement the work of the Fund, but could no longer hope to compete with it. Within six months from the organization of the Palestine Exploration Fund its first expedition was sent out. This was led by Capt., now Gen. Sir Charles Warren, who had just completed a survey of Jerusalem as part of a plan for bringing water into the city. The chief object of this expedition, which was in the field from December, 1865, to May, 1866, was to indicate spots for future excavation. It made a series of sketch maps of the country on the scale of one inch to the mile, studied some synagogues in Galilee noted by Robinson, but not fully described by him, and laid bare on Mount Gerizim the remains of a church built on a rough platform which may once have supported the Samaritan temple. (1) _Warren’s Excavations at Jerusalem._--A second expedition under Lieut.-Col., now Sir Charles Warren, made considerable excavations on the temple-hill at Jerusalem. He sank a remarkable series of shafts to the bottom of the walls enclosing the temple area, and proved that in places these walls rest on foundations from 80 to 125 feet below the present surface. He laid bare solid masonry, which bore what are apparently Phœnician quarry-marks and which he believed to go back to the time of Solomon. On the west side of the temple enclosure he found 80 feet below the present surface the ruins of a bridge, which Robinson had conjectured crossed the Tyropœon Valley from the temple enclosure at this point from an arch, the base of which is still visible outside of the temple wall.[35] Among many other discoveries made by Warren were a part of the ancient city wall south of the temple area and an underground passage leading up from the ancient spring of Gihon, which was probably the “gutter” (R. V., “watercourse”) of 2 Sam. 5:8.