The presence of water at the distal ends of probes 33, 51 results in {HEAD ~ a ground potential} applied to {TAIL ~ wires} 38, 56, thereby causing activation of coils 34, 58 and closure respectively of the associated context 35, 36 and 59, 60 
applied to
The presence of water at the distal ends of probes 33 , 51 results in { HEAD ~ a ground potential } applied to { TAIL ~ wires } 38 , 56 , thereby causing activation of coils 34 , 58 and closure respectively of the associated context 35 , 36 and 59 , 60
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL 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