Dr. Jarcho's scholarly work highlights the relationship between medicine, literature, and religion. He describes what the ancient Greeks and Romans wrote, and may have thought about contagion and what
caused the spread of disease. He then considers Moslem ideas on the subject, and follows these with writings by saints, theologians and controversialists in both religious and nonreligious contexts. His
final section presents detailed writings of Leonicenus (1428-1524), a physician and classical scholar, and those of Fracastorius (ca. 1478-1553), an astronomer, cartographer, and philosopher.