author
A physician-scientist with a gift for explaining disease, he helped bring early microbiology to medical students and practicing doctors through clear, practical writing. His best-known book, Pathogenic Micro-Organisms, reflects the moment when bacteriology was becoming central to modern medicine.

by Ward J. MacNeal
Born in Michigan in 1881, Ward J. MacNeal built an academic career around bacteriology, pathology, and medical research. The University of Michigan notes that he earned his A.B. in 1901, his Ph.D. in 1904, his M.D. in 1905, and later an honorary Sc.D. in 1939.
He is remembered as a noted authority on bacteria and phage, and as a pathologist who specialized in cancer research. For readers today, he is most closely linked with Pathogenic Micro-Organisms, a textbook for physicians and medical students that helped present the rapidly developing science of microbiology in a usable, teaching-focused form.
MacNeal died in 1946. Although biographical details about his personal life are not easy to confirm from the sources I found, the surviving record shows a scientist whose work sat at the meeting point of laboratory research, medicine, and medical education.