* gas silvestre
**Ancient origin for fixed air by Jan Baptist van Helmont
*Spiritus sylvestris
*aerial acid
*acid of air
*luft-saeure
*carbonic anhydride
*Gas acide carbonique
*Gas carbonicum
*chalky acid
*acid of chalk
*kriedesaeure
*kohlensaeures gas
*choke-damp
*cretaceous acid
*Acide mephitique
*Mephitic air
*deutoxide of carbon