Water moves from pathway 84 into pathway 88 through a connecting, generally perpendicular pathway 94, generally defined by wall section 96, which extends downward from lower surface 86 to {HEAD ~ the upper end} of {TAIL ~ wall} 92 
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Water moves from pathway 84 into pathway 88 through a connecting , generally perpendicular pathway 94 , generally defined by wall section 96 , which extends downward from lower surface 86 to { HEAD ~ the upper end } of { TAIL ~ wall } 92
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH