LettersDiscussion and Correspondence THE PROBLEM OF COLOR By C. LADD FRANKLIN See allHide authors and affiliations Science 14 Sep 1900:Vol. 12, Issue 298, pp. 408-410DOI: 10.1126/science.12.298.408 C. LADD FRANKLINFind 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.