NEW PIPE LINE AT GREELEY. Greeley, Colo., has turned the water into its new pipe-line, and has thereby dried up what is probably the oldest irrigating ditch in the State. This ditch, now known as the Collamer, formerly the Whedbee, was taken out in 1861 and now carries about seven and a half cubic feet of water. About a year ago the city of Greeley bought the water in this ditch and several hundred acres of land watered by that ditch, in order to secure the oldest priority possible. Before the city can gain absolute title, to the water it will be necessary t get a court decree permitting it to change tile point of diversion of that amount of water.