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On the Laws of the Double Refraction of Quartz "On the Laws of the Double Refraction' of Quartz" "On the Length of the Seconds Pendulum in the Observatory of Greenwich" On the Limits of the Optical Capacity of the Microscope "On the Lines that divide each diurnal arc into Six Equal Parts" "On the Lines that divide each Semidiurnal Arc into Six Equal Parts" On the Loadstone and Magnetic Bodies, and on the Great Magnet the Earth. A New Physiology, demonstrated with many arguments and experiments On the Longitude of the Armagh Observatory, given by Fifteen Chronometers of Arnold and Dent, etc. On the Longitude of Washington, computed from the Moon-Culminations observed during the years 1839-1842 inclusive "On the Lubrication of Resistance-Box Plugs" "On the Lunar-Diurnal Magnetic Variation at Toronto" On the Manufacture of Crucible Cast Steel "On the Mechanical Performance of Logical Inference" "On the Meteor which appeared on Thursday the 12th of August 1852, at about 9h 20m p.m. Greenwich Time" "On the Meteorological and Physical Effects of the Solar Eclipse of March 15, 1858" "On the Method of Testing Marine Meteorological Instruments, recently introduced at the Liverpool Observatory" "On the Microscope" "On the Microscopes of Antoni van Leeuwenhoek" On the Mineral Water discovered in Sinking the Artesian Well at St Clement's, Oxford, and also on Certain Geological Inferences suggested by the Character of the Water On the Modern Reflecting Telescope and the Making and Testing of Optical Mirrors "On the Modification of the Doubly Refracting and Physical Structure of Topaz, by Elastic Forces emanating from Minute Cavities" On the Modifications of Clouds and on the Principles of their Production, Suspension, and Destruction: Being the Substance of an Essay read before the Askesian Society in the Session 1802-03 "On the Molecular Tactics of a Crystal" "On the Moon's Photographic Diameter and on the applicability of Celestial Photography to accurate Measurement" On the Natural Faculties On the Nature and Evidence of the Primary Laws of Motion : 2 entries On the Nature of the Mind "On the Nature of the Truth of the Laws of Motion" "On the Nature of those Red Protuberances which are seen on the Sun's Limb during a Total Eclipse" On the New Method of Determining the Longitude by the Culmination of the Moon and Stars: Being a Paper read before the Astronomical Society of London. To which are now added an Appendix and a List of Stars, applicable to the Purpose, for the Year 1825 "On the Observed Variations in the Temperature Coefficients of a Precision Balance" : 3 entries On the Optical Glass prepared by the late Dr. Ritchie "On the Optical Properties of Sulphuret of Carbon, Carbonate of Barytes, and Nitrate of Potash; with Inferences respecting the Structure of Doubly Refracting Crystals" On the Orbits Described by Bodies revolving in Given Planes Round Immoveable Centres of Forces "On the Orbits in which Bodies Revolve, being acted upon by a Centripetal Force, varying as any Function of the Distance, when those Orbits have two Apsides" "On the Origin and Investigation of Porisms" "On the Origin of Alchemy" "On the Origin of Clockwork, Perpetual Motion Devices and the Compass" "On the Origin of Numerals." On the origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life "On the original form of the Alfonsine Tables" "On the Oxidation and Disoxidation Effected by the Alkaline Peroxides" "On the Parallax of a-Centauri" On the Pediculi infesting the Different Races of Man "On the Periodicity of Approximately 21 Minutes in the Recurrence of Earthquakes" On the Peroxides of the Radicals of the Organic Acids "On the Perpetuum Mobile" "On the Planetary Theory of Copernicus" On the Power, Wisdom and Goodness of God as Manifested in the Adaption of External Nature to the Moral and Intellectual Constitution of Man On the power, wisdom, and goodness of God : as manifested in the creation of animals, and in their history, habits, and instincts "On the Present State of Meteorological Science in England" "On the Production of Coloured Flames for use with Spectrometers and Polarimeters" On the Rainfall for 25 Years (1851-1875) as Observed at the Radcliffe Observatory, Oxford On the Recent Progress and Present State of the Sciences of Meteorology and Terrestrial Magnetism "On the Reconstruction of Chinese Alchemy" "On the Red Prominences seen during Total Eclipses of the Sun" "On the Reduction of Transpiration Observations" "On the Relation between Atmospheric Perturbations and Explosions of Fire-Damp in Mines" "On the Relations of the Secular Variation of the Magnetic Declination and Inclination at London, Cape of Good Hope, St. Helena and Ascension Island, as Exhibited on the Magnetarium" "On the Relationship between the Somme River and the Somme Valley" "On the Relative Brightness of the Sun and Moon, from Observations made at the Observatory of Harvard College" "On the Removal of Gas-Grown Skins from a Sprengel Pump" "On the Response of the Chick, before and after Hatching to changes of External Temperature" "On the Results of Periodical Observations of the Positions and Distances of Nineteen of the Stars in Sir John Herschel's Lists of Stars, favourably situated for the Investigation of Parallax, contained in Part II. of the Philosophical Transactions for 18 On the results of Spectrum Analysis applied to the Heavenly Bodies: A Discourse delivered at Nottingham, before the British Association, August 24, 1866 On the Rochon Micrometer Telescope, and its Application to the Measurement of Distances, with a Table for the Distances for every Second On the Safety Lamp for Coal Miners; with some Researches on Flame "On the Sailing Instructions of Vasco Da Gama to Pedro Alvares Cabral" "On the Salinon of Archimedes" "On the Satellites of Uranus" "On the Scientific Correspondence of Wilhelm Ostwald with Polish Scientists" On the Shoulders of Merchants: Exchange and the Mathematical Conception of Nature in Early Modern Europe On the Site of the Ancient City of Aurunci, and on the Volcanic Phenomena which it Exhibits; with some remarks on Craters of Elevation, on the Distinctions between Plutonic and Volcanic Rocks, and on the Theories of Volcanic Action which are at present mo On the Site of the Ancient City of the Aurunci, and on the volcanic phenomena which it exhibits {?} With some remarks on craters of elevation, on the distinctions between plutonic and volcanic rocks, and on the Theories of Volcanic Action which are at pre On the Site of the Ancient City of the Aurunci, and on the Volcanic Phenomena which it Exhibits; with some remarks on craters of elevation, on the distinctions between Plutonic and volcanic rocks, and on the theories of volcanic action which are at presen "On the Skull and Auditory Organ of the Siluroid Hypophthalmus" "On the Spinning-Glands in Phrynus; with an Account of the so-called "Penis" and of the Morphology of the Operculum" "On the Spiral Character of the Great Nebula in Orion" "On the Stanhope Logical and Arithmetical Machines" "On the Storage of Small Quantities of Gas at Low Pressures" "On the Structure, Functions, and Homologies of the Manducatory Organs in the Class Rotifera" "On the Study of Interconnections Between Natural and Technical Sciences" On the Study of Physiology: Its Relation to Other Studies, and its Use as a Preparation for that of Medicine "On the Surface Tensions of Liquid Crystals" "On the Surgical and other Cases of Interest during Twenty-three years in Perthshire Mental Hospitals" "On the Survival of certain Racial Features in the Population of the British Isles" "On the Synthesis of Benzo-g-Pyrone" "On the Tables of Planetary Visibility in the Almagest and the Handy Tables" "On the Temperature Variation of the Orthobaric Density of Unassociated Liquids" "On the term hsuan chi and the flanged trilobate discs" "On the Tetravalency of Oxygen; with remarks on the varying valency of the elements and the present chemical aspect of the valency problem" On the Theory of Parallel Lines On the Theory of Ratio and Proportion, as Treated by Euclid, including an Inquiry into the Nature of Quantity On the Theory of the Moon and on the Perturbations of the Planets "On the Theory of the Motion of Glaciers" "On the Tides of the Western Coast of the United States - Tides of San Francisco Bay, California" "On the Total Eclipse of the Sun, July 28, 1851, observed at Goteborg; with a Description of a New Portable Micrometer" "On the Total Solar Eclipse of 1851" "On the Trail of ... Friar Roger Bacon" "On the Trail of the Comet"
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