A land irrigation system is illustrated in which an elongated sprinkler line continuously travels in a direction transverse to {TAIL ~ its length} along {HEAD ~ the length dimension} of a stationary water main and is continuously supplied with water from upstanding hydrants spaced along the length of the water main 
A land irrigation system is illustrated in which an elongated sprinkler line continuously travels in a direction transverse to { TAIL ~ its length } along { HEAD ~ the length dimension } of a stationary water main and is continuously supplied with water from upstanding hydrants spaced along the length of the water main
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH