Articles SEX IN THE TREMATODE FAMILY SCHISTOSOMIDÆ By William W. Cort See allHide authors and affiliations Science 11 Mar 1921:Vol. 53, Issue 1367, pp. 226-228DOI: 10.1126/science.53.1367.226 William W. Cort Find this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.