Lewis Victor Heilbrunn (January 24, 1892 – October 1959) was an influential American biologist. Heilbrunn was awarded a Guggenheim Fellowship in 1927, and on his return from Europe began teaching at the University of Pennsylvania, a position he would hold for 30 years. His Outline of General Physiology (first edition 1937) became a standard foundational text in the field. Selected works The colloid chemistry of protoplasm, Berlin, Gebrüder Borntraeger, 1928 An outline of general physiology, Philadelphia, W.B. Saunders, 1937 (second edition 1943; third edition 1952) Protoplasmatologia; Handbuch der Protoplasmaforschung, Vienna, Springer, 1953 The dynamics of living protoplasm, New York, Academic Press 1956 External links Heilbrunn bio 1892 births 1959 deaths People from Brooklyn American biologists Scientists from New York City University of Pennsylvania faculty 20th-century biologists