also the foremost critic of Essays and Reviews. Powell died of a heart attack a fortnight before the meeting. He is buried in Kensal Green Cemetery, London. Works 1837: History of Natural Philosophy from the Earliest Periods to the Present Time Published by Longman, Brown, Green, and Longmans 1838: The Connexion of Natural and Divine Truth Or the Study of the Inductive Philosophy Considered as Subservient to Theology: Or, The Study of the Inductive Philosophy, Considered as Subservient to Theology, Published by J.W. Parker 1841: A General and Elementary View of the Undulatory Theory, as Applied to the Dispersion of Light, and Some Other Subjects: Including the Substance of Several Papers, Printed in the Philosophical Transactions, and Other Journals, Published by J.W. Parker 1854: (as editor) Lectures on Polarized Light: Together with a Lecture on the Microscope, Delivered Before the Pharmaceutical Society of Great Britain, and at the Medical School of the London Hospital by Jonathan Pereira, published by Longman, Brown, Green, and Longmans 1859: The Order of Nature: Considered in Reference to the Claims of Revelation : a Third Series of Essays, Published by Longman, Brown, Green, Longmans, & Roberts Papers to the Royal Society, the Ashmolean Society and others 1828 "The elements of curves: comprising, I. The geometrical principles of the conic sections; II. An introduction to the algebraic theory of curves; designed for the use of students in the University." 1829 "A short treatise on the principles of the differential and integral calculus" 1830 "An elementary treatise on the geometry of curves and curved surfaces, investigated by the application of the differential and integral calculus." 1832 "The present state and future prospects of mathematical and physical studies in the University of Oxford." 1833 "A short elementary treatise on experimental and mathematical optics." 1834 "On the achromatism of the eye " 1836 "On the theory of ratio and proportion, as treated by EUCLID, including an inquiry into the nature of quantity " 1836 "Observations for determining the refractive indices for the standard rays of the solar spectrum in various media " 1837 "An historical view of the progress of the physical and mathematical sciences from the earliest ages to the present times " 1837 "On the nature and evidence of the primary laws of motion " 1838 "Additional observations for determining the refractive indices for definite rays of the solar spectrum in several media " 1839 "A second