Stanford University, thesis in chemistry, interest in botany; work with Cornelius van Niel, Hopkins Marine Station; fellow, Microbiology Laboratory, Polytechnical School, Delft, Holland; Berkeley, 1936-75: soil microbiologist, Agriculture Experiment Station, 1936-50; Dept. of Biochemistry, 1950-75: discusses program in Comparative Biochemistry, Dept. of Bacteriology, Virus Laboratory; research: photosynthetic bacteria, enzymatic synthesis of sucrose, B12 coenzyme, use of radioactive tracers from Berkeley cyclotron, patent on B12 process; comments on scientists: C.B. van Niel, A.J. Kluyver, Sam Ruben, Martin Kamen, Ernest and John Lawrence, Wendell Stanley, and others.

copy of a graduate student paper by Susan Spath titled "From menacing microbes to microorganisms as model systems: the enrichment of American science by the Delft School of Microbiology," 1989.