The withdrawal section is separated from the melting section by a first dividing wall extending downwardly and terminating above {HEAD ~ the surface} of {TAIL ~ the molten glass} 
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The withdrawal section is separated from the melting section by a first dividing wall extending downwardly and terminating above { HEAD ~ the surface } of { TAIL ~ the molten glass }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL