[Construction and use of a very sensitive calorimeter adapted for biological research].

The present conduction calorimeter was assembled to study the thermogenesis of whole organs or little Vertebrates. It is constituted of three essential parts : one aluminium calorimetric block, two cylindrical cells in plexiglass of 60,80 or 100 ml volume, two flux plates : the sensitive elements which permit differential measurements on a chart recorder. The whole system is thermoregulated.