Referring to FIG 10, it is preferable to orient the ellipse in {TAIL ~ the horizontal axis} relative to {HEAD ~ the eye} 
Referring to FIG 10 , it is preferable to orient the ellipse in { TAIL ~ the horizontal axis } relative to { HEAD ~ the eye }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD