Dictionary of National Biography and is held by The National Archives. It was executed on 12 January 1720 and was proved in the Prerogative Court of Canterbury in October 1721. He spent £500 to his household furniture and plate to his wife and his books, instruments and other money in trust for his son. Principal publications An Examination of Dr. Burnet's Theory of the Earth. Oxford: 1698. Introductio ad Veram Physicam seu Lectiones Physicae. Oxford: Thomas Bennet, 1702. Trigonometriae Planae & Sphaericae Elementa. Oxford: Henry Clements, 1715. Item de Natura et Arithmetica Logarithmorum tractatus brevis. Oxford: Henry Clements, 1715. Introductio ad Veram Astronomiam seu Lectiones Astronomicae. Oxford: Henry Clements, 1718. Keill's publisher at Oxford, Henry Clements, sometimes bound Keill's Trigonometriae and Logarithmorum with Federico Commandino's translation of Euclid's Elements. This volume appeared as: Euclidis Elementorum Libri Priores Sex. Oxford: Henry Clements, 1715. After Keill's death, the Verbeek brothers collected Keill's work into a single volume. This volume appeared as: Introductiones ad veram Physicam et veram Astronomiam. Leiden: Jan en Hermanus Verbeek, 1725. This book also contained Keill's long papers De Legibus Virium Centripetarum and De Legibus Attractionis, aliisque Physices Principiis. All of these works were very popular; they appeared in England and the Continent in many editions from many publishers, in Latin, English, and Dutch. Editions References External links Keill's MacTutor biography An examination of Dr. Burnet's theory of the Earth – full digital facsimile of Keill's 1698 book at Linda Hall Library 1671 births 1721 deaths Scientists from Edinburgh Alumni of the University of Edinburgh Alumni of Balliol College, Oxford 18th-century Scottish mathematicians Scottish mathematicians 18th-century Scottish people Scottish astronomers Savilian Professors of Astronomy Fellows of the Royal Society