| | PAGE |
| ARTICLE I. | Introduction. Pp. 16. | |
| Advertisement | iii |
| List of Officers of the Smithsonian Institution | ix |
| ARTICLE II. | Discussion of the Magnetic and Meteorological Observations made atthe Girard College Observatory, Philadelphia, in 1840, 1841, 1842,1843, 1844, and 1845. Third Section, comprising Parts VII, VIII,AND IX. Vertical Force. Investigation of the Eleven (or Ten)Year Period and of the Disturbances of the Vertical Component ofthe Magnetic Force, and Appendix on the Magnetic Effect of theAurora Borealis; with an Investigation of the Solar DiurnalVariation, and of the Annual Inequality of the Vertical Force;and of the Lunar Effect or the Vertical Force, the inclination, andTotal Force. By A. D. Bache, LL. D., F. R. S., Mem. Corr. Acad.Sc. Paris; Prest. Nat. Acad. Sciences; Superintendent U. S. Coast Survey.Pp. 72. (Published May, 1864.) |
| ARTICLE III. | Discussion of the Magnetic and Meteorological Observations made atthe Girard College Observatory, Philadelphia, in 1840, 1841, 1842,1843, 1844, and 1845. Fourth Section, comprising Parts X, XI, ANDXII. Dip and Total Force. Analysis of the Disturbances of theDip and Total Force; Discussion of the Solar Diurnal Variationand Annual Inequality of the Dip and Total Force; and Discussionof the Absolute Dip, with the Final Values for Declination, Dipand Force between 1841 and 1845. By A. D. Bache, LL. D., F. R. S.,Mem. Corr. Acad. Sc. Paris; Prest. Nat. Acad. Sciences; SuperintendentU. S. Coast Survey. Pp. 44. (Published January, 1865.) |
| ARTICLE IV. | On the Construction of a Silvered Glass Telescope, fifteen and a halfinches in Aperture, and its Use in Celestial Photography. ByHenry Draper, M. D., Professor of Natural Science in the University ofNew York. Pp. 60. (Published July, 1864.) |
| §1. Grinding and Polishing the Mirrors | 2 |
| §2. The Telescope Mounting | 27 |
| §3. The Clock Movement | 38 |
| §4. The Observatory | 41 |
| §5. The Photographic Laboratory | 46 |
| §6. The Photographic Enlarger | 51 |
| ARTICLE V. | Palæontology of the Upper Missouri: A Report upon Collections madeprincipally by the Expeditions under command of Lieut. G. K. Warren,U. S. Top. Engrs., in 1855 and 1856. Invertebrates. By F. B.Meek and F. V. Hayden, M. D. Part I. Pp. 158, and five Plates.(Published April, 1865.) |
| Introductory Remarks | vii |
| I. | Silurian Age. Potsdam Period | 1 |
| II. | Carboniferous Age. Carboniferous Period | 11 |
| III. | Carboniferous Age. Permian Period | 48 |
| IV. | Reptilian Age. Jurassic Period | 66 |
| Index | 129 |
| Explanations of Plates. |
| ARTICLE VI. | Cretaceous Reptiles of the United States. By Joseph Leidy, M. D.,Professor of Anatomy in the University of Pennsylvania, Curator of theAcademy of Natural Sciences of Philadelphia. Pp. 140 and twenty plates.(Published May, 1865.) |
| Introduction | 1 |
| Sauria | 5 |
| Chelonia | 104 |
| A Synopsis, in which an attempt is made to define more closely the Generaand Species of Reptiles whose remains are described in the preceding pages | 115 |
| Index | 121 |
| References to the Plates | 123 |