Book ReviewsScientific Books Genetics, An Introduction to the Study of Heredity By J. A. Detlefsen See allHide authors and affiliations Science 04 Aug 1922:Vol. 56, Issue 1440, pp. 145-146DOI: 10.1126/science.56.1440.145 J. A. DetlefsenFind 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.