subjecting the array of noncommunicating spaced chambers with {HEAD ~ said packets} containing {TAIL ~ a thermoresponsive mixture} enclosed therein to a predetermined temperature environment; and 
subjecting the array of noncommunicating spaced chambers with { HEAD ~ said packets } containing { TAIL ~ a thermoresponsive mixture } enclosed therein to a predetermined temperature environment ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH