The Quarterly Review of BiologyVolume 27, Number 1 Previous articleNext article No AccessNew Biological BooksScience News 19. J. L. Cramer PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookXLinkedInRedditBlueskyEmailPrint SectionsMoreDetailsFiguresReferencesCited by The Quarterly Review of Biology Volume 27, Number 1Mar., 1952 Published in association with Stony Brook University Article DOIhttps://doi.org/10.1086/398863 PermissionsRequest permissions PDF download Crossref reports no articles citing this article.