▁as ▁a ▁text book ▁in ▁Edinburgh ▁was ▁sufficient ▁to ▁mer it ▁translation ▁into ▁English ▁within ▁about ▁a ▁year ▁of ▁its ▁French ▁publication . ▁In ▁any ▁event , ▁the ▁Tra ité ▁él ément aire ▁was ▁sufficiently ▁sound ▁to ▁conv ince ▁the ▁next ▁generation . ▁ ▁Phys i ological ▁work ▁ ▁The ▁relationship ▁between ▁comb ust ion ▁and ▁resp iration ▁had ▁long ▁been ▁recognized ▁from ▁the ▁essential ▁role ▁which ▁air ▁played ▁in ▁both ▁processes . ▁Lav ois ier ▁was ▁almost ▁obliged , ▁therefore , ▁to ▁extend ▁his ▁new ▁theory ▁of ▁comb ust ion ▁to ▁include ▁the ▁area ▁of ▁resp iration ▁phys i ology . ▁His ▁first ▁mem oir s ▁on ▁this ▁topic ▁were ▁read ▁to ▁the ▁Academy ▁of ▁Sciences ▁in ▁ 1 7 7 7 , ▁but ▁his ▁most ▁significant ▁contribution ▁to ▁this ▁field ▁was ▁made ▁in ▁the ▁winter ▁of ▁ 1 7 8 2 / 1 7 8 3 ▁in ▁association ▁with ▁Lap lace . ▁The ▁result ▁of ▁this ▁work ▁was ▁published ▁in ▁a ▁mem oir , ▁" On ▁He at ." ▁Lav ois ier ▁and ▁Lap lace ▁designed ▁an ▁ice ▁cal or imeter ▁appar atus ▁for ▁meas uring ▁the ▁amount ▁of ▁heat ▁given ▁off ▁during ▁comb ust ion ▁or ▁resp iration . ▁The ▁outer ▁shell ▁of ▁the ▁cal or imeter ▁was ▁pack ed ▁with ▁snow , ▁which ▁m elt ed ▁to ▁maintain ▁a ▁constant ▁temperature ▁of ▁ ▁around ▁an ▁inner ▁shell ▁filled ▁with ▁ice . ▁By ▁meas uring ▁the ▁quantity ▁of ▁carbon ▁dio x ide ▁and ▁heat ▁produced ▁by ▁conf ining ▁a ▁live