In biology, an exothermic or poikilothermicanimal is one that requires external sources of heat (usually sunlight) to maintain its internal temperature: for example, reptiles.
... Reform der Hegelschen Philosophie (1852)
Wissenschaft der logischen Idee (1858-59), with a supplement (Epilegomena, 1862)
Hegels Naturphilosophie und d ...