Articles ON THE HOMOLOGIES AND PROBABLE ORIGIN OF THE EMBRYO-SAC + See all authors and affiliations Science 05 Apr 1901:Vol. 13, Issue 327, pp. 530-538DOI: 10.1126/science.13.327.530 GEO. F. ATKINSONFind 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 below.