Monolingual fieldwork in and beyond the classroom

Betty Mack Twarog, the biologist who discovered serotonin in 1951 as a Harvard graduate student of John Welsh, later wrote: “To have worked with Professor John Henry Walsh is to have been apprenticed to a Prince of Serendip, on a journey of scientific exploration. In science, ‘fortuitous’ discovery depends heavily on the traveler’s choice of itinerary. Professor Welsh designed wonderful itineraries for his students and encouraged enthusiasm, eclectic interests, and openmindedness. Many of us have enjoyed the excitement of discovery because of his guidance” (Twarog 1988: 21).