H. W. (Herbert William) Conn

Born in 1859, Herbert William Conn was an American bacteriologist, educator, and author who spent much of his career at Wesleyan University. He worked during the years when bacteriology was becoming a major scientific field, and he became known for explaining that fast-moving research in clear, practical terms.

Alongside his academic work, he wrote books on bacteria, evolution, hygiene, and public health for both students and general readers. That mix of scholarship and accessibility made him an important interpreter of modern biology at a time when ideas about germs and sanitation were changing everyday life.

Conn died in 1917. He is still remembered as a scientist who not only studied microscopic life, but also helped ordinary readers understand why it mattered.