. 29a exit line {Blanche DuBois's "I have always depended on the kindness of strangers," e.g.}. Reference to the last line of Tennessee Williams ' A Streetcar Named Desire (1947). 31a Galen {Founder of experimental physiology}. The theories of Galen (c.130–c.200AD) dominated and influenced Western medical science for well over a millennium. 41a sapor