News & Comment SCIENTIFIC NOTES AND NEWS + See all authors and affiliations Science 13 May 1904:Vol. 19, Issue 489, pp. 772-775DOI: 10.1126/science.19.489.772 Article Info & Metrics eLetters PDF This article has a correction. Please see:SCIENTIFIC NOTES AND NEWS - May 13, 1904 This is a PDF-only article. The first page of the PDF of this article appears below.