<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/1/21/2" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Diagram, the Florentine problem by David Gregory in his letter to Edmond Halley</dc:title>
  <dc:description>Diagram contained within text on the second page of the document. Labelled fig. 3, consists of two circles enclosed in a larger circle, with a semi-circle overlapping. There are lines and angles and parts are lettered.

Subject: Geometry

Published in Philosophical Transactions as 'Solutio problematis Florentini de testitudine veliformi quadrabili, a Davide Gregorio, M. D. ac R. S. S. Communicata'.

Communicated by Edmond Halley. Read to the Royal Society on 17 January 1694.</dc:description>
  <dc:date>1693</dc:date>
</rdf:Description>