ɪt wʌzɐ pɹˈiːviəsli ɐksˈɛptᵻd kˈɑːnsɛpt ðæt hˈiːt wʌz ɐbsˈoːɹbd θɹuː ɛkstˈɜːnəl sˈoːɹsᵻz; haʊˈɛvɚ, ðə kˈɑːnsɛpt ʌv vˈaɪɾəl hˈiːt wʌz mˈoːɹ ɔːɹ lˈɛs stˈʌmbəld əpˌɑːn baɪ ɐ fˌɪzɪəlˈɑːdʒɪkəl ɑːbzɚvˈeɪʃən ðæt ɐsˈoʊsɪˌeɪts kˈoʊld wɪððə dˈɛd ænd hˈiːt wɪððə lˈɪvɪŋ.
It was a previously accepted concept that heat was absorbed through external sources; however, the concept of vital heat was more or less stumbled upon by a physiological observation that associates cold with the dead and heat with the living.