On a spirochaete found in yaws papules.

Independently of Castellani (No. 5306) Wellmann discovered Treponema pertenue.

"In addition to being an author, Wellman was also a doctor of tropical medicine, scientist, administrator, artist, educator, spy, and engineer. Writing under the pen names Cyril Kay-Scott and Richard Irving Carson, Wellman composed plays, novels, short stories, and poems, all of which are represented in the collection. In addition, there is correspondence, exhibition catalogs, Wellman's autobiography, and a watercolor by Wellman. Already on his second marriage and with four children, Wellman eloped with writer Elsie Dunn (1893-1963). They fled the country and changed their names to Cyril Kay-Scott and Evelyn Scott. After living in Brazil and later returning to the United States, Wellman had a career as an art teacher, a museum director, and upon retiring, wrote his autobiography"  (https://specialcollections.tulane.edu/archon/?p=collections/controlcard&id=607, accessed 03-2018).