ArticlesSpecial Article THE PERFECT STAGE OF LEAF-SPOT OF PEAR AND QUINCE + See all authors and affiliations Science 01 Oct 1909:Vol. 30, Issue 770, pp. 452DOI: 10.1126/science.30.770.452 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.