▁gu inea ▁p ig ▁in ▁this ▁appar atus , ▁and ▁by ▁comparing ▁the ▁amount ▁of ▁heat ▁produced ▁when ▁sufficient ▁carbon ▁was ▁burn ed ▁in ▁the ▁ice ▁cal or imeter ▁to ▁produce ▁the ▁same ▁amount ▁of ▁carbon ▁dio x ide ▁as ▁that ▁which ▁the ▁gu inea ▁p ig ▁ex h aled , ▁they ▁concluded ▁that ▁resp iration ▁was , ▁in ▁fact , ▁a ▁slow ▁comb ust ion ▁process . ▁Lav ois ier ▁stated , ▁" la ▁resp iration ▁est ▁donc ▁une ▁comb ust ion ," ▁that ▁is , ▁resp ir atory ▁gas ▁exchange ▁is ▁a ▁comb ust ion , ▁like ▁that ▁of ▁a ▁cand le ▁burning . ▁ ▁This ▁continuous ▁slow ▁comb ust ion , ▁which ▁they ▁supposed ▁took ▁place ▁in ▁the ▁l ungs , ▁enabled ▁the ▁living ▁animal ▁to ▁maintain ▁its ▁body ▁temperature ▁above ▁that ▁of ▁its ▁surr ound ings , ▁thus ▁account ing ▁for ▁the ▁puzz ling ▁phenomen on ▁of ▁animal ▁heat . ▁Lav ois ier ▁continued ▁these ▁resp iration ▁experiments ▁in ▁ 1 7 8 9 – 1 7 9 0 ▁in ▁co operation ▁with ▁Arm and ▁Seg u in . ▁They ▁designed ▁an ▁am bit ious ▁set ▁of ▁experiments ▁to ▁study ▁the ▁whole ▁process ▁of ▁body ▁met abol ism ▁and ▁resp iration ▁using ▁Seg u in ▁as ▁a ▁human ▁gu inea ▁p ig ▁in ▁the ▁experiments . ▁Their ▁work ▁was ▁only ▁partially ▁completed ▁and ▁published ▁because ▁of ▁the ▁dis ruption ▁of ▁the ▁Revolution ; ▁but ▁Lav ois ier ' s ▁pione ering ▁work ▁in ▁this ▁field ▁served ▁to ▁insp ire