Book Reviews Elementary Trigonometry. By T. Roach. Oxford, Clarendon Pr. 12° See allHide authors and affiliations Science 14 Oct 1887:Vol. ns-10, Issue 245, pp. 191DOI: 10.1126/science.ns-10.245.191-c Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.