This short summary will suffice to show that attempts to discover relations between the physical attributes of substances and their chemical nature were made more or less sporadically from the time that chemistry was pursued in the spirit of science. But it is only in recent times that any great accession to knowledge has resulted from such efforts. The science of physical chemistry is practically a creation of our own period. Its systematic study may be said to date only from the last quarter of the nineteenth century, since which time it has made extraordinary progress. Its broad features will be dealt with in the second volume of this work. BIBLIOGRAPHY RELATING TO THE PERIOD COVERED BY VOL. I. Agricola, Georg. _De Re Metallica._ Agricola, Georg. _Vom Bergwerck XII. Bücher darinn mit schöner Figuren_, etc. Alembic Club, Publications of the. W. Clay, Edinburgh. Beddoes, Thomas. _Chemical Essays of Scheele._ Murray, London, 1786. Berthelot, Marcellin. _La Chimie des Anciens et du Moyenâge._ Steinheil, Paris, 1889. Berthelot, Marcellin. _La Révolution Chimique._ Félix Alcan, Paris, 1890. Berthollet, C. L. _Essai de Statique Chimique._ Firmin Didot, Paris, 1803. Birch, Thomas. _Life of Boyle._ Millar, London, 1744. Boerhaave, Hermann. _New Method of Chemistry._ Shaw and Chambers, London, 1727. Boulton, Richard. _Boyle’s Works Epitomised._ Phillips and Taylor, London, 1699. Burton, W. _Life of Boerhaave._ Lintot, London, 1746. Dalton, John. _A New System of Chemical Philosophy._ Two Vols. Bickerstaff, London, 1807–1810. Davy, John. _Life of Sir Humphry Davy._ Longmans, London, 1836. Davy, Humphry. _Collected Works._ Edited by John Davy. Smith, Elder, and Co., London, 1839. Figuier, Louis. _L’Alchimie et les Alchimistes._ Victor Lecon, Paris, 1855. Gay Lussac and Thénard. _Recherches Physico-Chimiques._ Deterville, Paris, 1811. Gerding, Th. _Geschichte der Chemie. Zweite Ausgabe._ Grunow, Leipzig, 1869. Grimaux, Edouard. _Lavoisier, 1743–1794._ Félix Alcan, Paris, 1888. Henry, William Charles. _Life of Dalton._ Cavendish Society, London, 1854. Hoefer, Ferdinand. _Histoire de la Chimie._ Two vols., Deuxième édition. Firmin Didot Frères, Paris, 1866. Jones, Bence. _Life and Letters of Faraday._ Longmans, London, 1870. Kopp, Hermann. _Geschichte der Chemie._ Four vols. Braunschweig, 1843–47. Kopp, Hermann. _Die Alchemie in älterer und neuerer Zeit._ Heidelberg, 1886. Ladenberg, Albert. _History of Chemistry Since the Time of Lavoisier._ Translated by Leonard Dobbin. Alembic Club, Edinburgh, 1900. Lavoisier. _Complete Works._ Edited by Dumas. Four vols. Paris, 1864. Lemery, Nicolas. _Cours de Chimie._ Paris, 1675. Meyer, Ernst v. _History of Chemistry._ Translated by George M’Gowan. Macmillian and Co., London, 1891. Nordenskiöld, A. E. _Carl Wilhelm Scheele._ Norsledt and Söner, Stockholm. Ostwald’s _Klassiker der Exakten Wissenschaften_.