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"On Dinornis (Part III): containing a Description of the Skull and Beak of that genus, and of the same characteristic parts of Palapteryx, and of two other genera of Birds, Notornis and Nestor; forming part of an extensive series of Ornithic remains disco "On Dinornis, an extinct Genus of tridactyle Struthious Birds, with descriptions of portions of the Skeleton of five Species which formerly existed in New Zealand. (Part I)" On Divers Arts: The Treatise of Theophilus On Education in the Principles of Art "On Electrical Currents circulating near the Earth's Surface, and their connection with the Phenomena of the Aurora Borealis" On Encke's Comet. Encke's Dissertation contained in no. CCX and CCXI of the 'Astronomische Nachrichten'. Translated from the German "On English Amber, and amber generally" "On Evaporation from a Circular Water Surface" On Eye-pieces for Telescopes and Microscopes On Facility of Intercourse "On five hitherto unrecovered copies of Jean Rey's "Essays" of 1630" On Forgotten Sources in the History of Science "On Graphical Methods of determining the Local or Greenwich Time of Sunset at different places within a given region" On Great Telescopes of the Future On Hypsometrical Measurements by means of the Barometer and the Boiling-Point Thermometer, ... "On Improvement in Meteorological Registration" "On John Rowley's Orrery" On Laboratory Arts On M. Hansteen's recent Magnetic Observations in Siberia. In a Letter to Professor Renwick of New York On Magnetism, Voltaic Electricity, and Electro-Dynamics. For the Use of Beginners "On making Telescope Tubes in the 17th Century (An Anonymous Italian Manuscript)" On Microscopes and Optics On Microscopical Manipulation, Being the Subject-Matter of a Course of Lectures Delivered before the Quekett Microscopical Club, January-April 1869 On my friend Mr. Silvanus Morgan, his Book of Dialling On Necessary and Contingent Truth: Considered in regard to some Primary Principles of Mathematical and Mechanical Science On New Tables of the Moon's Parallax to be substituted for those of Burckhardt On Occulting micrometers and their Value as applied to Exact Astronomical Measurements "On Optical Apparatus Used in Lighthouses" "On Period Relations in Babylonian Astronomy" "On Period-relations in Babylonian Astronomy" "On Plimpton 322. Pythagorean Numbers in Babylonian Mathematics" On pocket sundials : 2 entries On Poisons in relation to Medical Jurisprudence and Medicine On Polishing the Specula of Reflecting Telescopes "On Problems, Tasks and Working Aids in Solar Research" "On Raising Water for the Purposes of Irrigation in the Colonies" On repulsion resulting from radiation. Preliminary note on the Otheoscope "On resistances with current and potential terminals" On Rotatory Stability; and its Applications to Astronomical Observations on board Ships "On Science and Social Change" On Shooting Stars On Some Applications of the Method of Mechanical Quadratures On Some Aspects of the Scientific Method "On some Hybrid Bovine Animals bred in the Society's Garden" "On some New Phenomena of Chemical Changes produced by Electricity, particularly the Decomposition of the Fixed Alkalies and the exhibition of the new Substances which Constitute their bases; and on the general nature of Alkaline bodies" On Some of the Methods at present in Use in Pure Geometry : 2 entries "On Some points in the Meteorology of Bombay" "On some pre-publication copies of Lavoisier's "Traite" (1789)" "On some properties in achromatic object-glasses applicable to the improvement of the microscope" On Some Recent Improvements made in the Mountings of the Telescopes at Birr Castle. "On Some Recent Improvements made in the Mountings of the Telescopes at Birr Castle" "On Some Results of the Magnetic Survey of Scotland in the Years 1857 and 1858, undertaken, at the request of the British Association, by the late John Welsh, Esq., F.R.S." On Spectrum Analysis as Applied to Microscopical Observation: The subject of a lecture delivered at the South London Microscopical and Natural History Club, April 9, 1872 : 2 entries On Spectrum Analysis as applied to Microscopical Observation : 2 entries On Superstitions connected with the History and Practice of Medicine and Surgery "On Surface Energy and Surface Entropy" On Surgery and Instruments "On the "Hyperbola" Method for the Measurement of Surface Tensions" "On the 100th Anniversary of the Birthday of Friedrich Paschen and Pieter Zeeman" "On the Abbe Theory (1873)" "On the Action of Electricity on Gases. II On the Electric Decomposition of Carbonic-acid Gas" "On the action of Light upon Plants, and of Plants upon the Atmosphere" "On the Adaptation of the Structure of the Sloths to their peculiar Mode of Life" On the Adaption of External Nature to the Physical Condition of Man: principally with reference to the supply of his wants and the exercise of his intellectual faculties On the Adaption of External Nature to the Physical Condition of Man Principally with Reference to the Supply of His Wants and the Exercise of His Intellectual Faculties "On the Adjustment of the Transit Circle and Equatorial" "On the Advantage of a Collection of Numbers, to be entitled the Constants of Nature and Art" "On the Advantages to be attained by a Revision and Re-arrangement of the Constellations, with especial Reference to those of the Southern Hemisphere, and on the Principles on which such Re-arrangement ought to be Conducted" "On the Advantages to be derived from the Use of Metallic Reflectors for Sextants and other Reflecting Instruments; and on Methods of directly determining the Errors in Mirrors and Sun-Shades used in Reflecting Instruments" On the Advisability of Training the Youth of Britain to Military Exercises, as productive of National Safety "On the Agreement with Experiment of the Dilution Formula Deduced from the Debye-Huckel Theory" "On the Aims and Methods of Biological History and Biography with some notes for the collaborators of the Index Botanicorum" "On the Amount of the Radiation of Heat, at Night, from the Earth, and from various bodies placed on or near the Surface of the Earth" On the Ampitheatre at Pola in Istria "On the Ancient Weights of Britain" "On the Angle of Dock Gates and the Bee's Cell" "On the Angular Disturbances of Ships, the Measurement of the Amount, and the Elimination of the Effects in Certain Cases" "On the Annelida obtained during the Cruise of H.M.S. "Valorous" to Davis Strait in 1875" "On the apparent change in weight during Chemical Reaction" : 5 entries "On the Apparent Place of the Pole-Star at the Time of its Upper Culmination for the Years 1820, 1821, 1822." "On the Apparent Place of the Pole-Star at the Time of its Upper Culmination for the Years 1820, 1821, 1822" "On the Application of a Differential Densimeter to the Study of some Mediterranean Waters" : 3 entries "On the Application of Manley's Differential Densimeter to the Study of Sea-waters on board Ship" : 3 entries On the Application of the Method of Least Squares to the Determination of the most probable Errors of Observation in a Portion of the Ordnance Survey of England "On the application of the microscope to scientific purposes" "On the Approximate Estimation of the Critical Constants of Unassociated Substances" On the Arenarius of Archimedes On the Astrolabe "On the Astronomical Observations Recorded in the Nihongi, the Ancient Chronicle of Japan." "On the Astronomical Tables of the Islamic Middle Ages" "On the Atomic Weight of Glucinum (Beryllium)" "On the Atomic Weight of Graphite" "On the Babylonian Origin of some Hipparchian Parameters" "On the Balance Magnetometer, and its Temperature Corrections" On the Baramikas On the Bearings of the Study of Natural Science, and of the Contemplation of the Discoveries to which that Study Leads, on our Religious Ideas On the Boyle: a newsletter of work in progress on Robert Boyle (1627-91) "On the Cause of Storms, Waterspouts, etc." On the Causes of the Phenomena of Terrestrial Magnetism, and on some Electro-mechanism for Exhibiting the Secular changes in its Horizontal and Vertical Components "On the Change of Temperature in Europe, and the Variation of the Magnetic Needle"
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