Attention is now directed to FIG 7, which illustrates in section {TAIL ~ a collector} 69 of {HEAD ~ two cusps} 70 and 71 
Attention is now directed to FIG 7 , which illustrates in section { TAIL ~ a collector } 69 of { HEAD ~ two cusps } 70 and 71
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH