Letters Secular increase of the earth's mass See allHide authors and affiliations Science 28 Dec 1883:Vol. ns-2, Issue 47, pp. 820-821DOI: 10.1126/science.ns-2.47.820 ALEXANDER WINCHELLFind 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.