period which occur in the solar system depend upon these ratios, and they are interwoven with all the most important irregularities of motion of the primary planets. Whence could this extraordinary coincidence have arisen but from the action of a single mind? and what does it indicate but that the same Word which created the planet, is expressed in the plant ? May I close with the remark, that the object of geometry in all its measuring and computing, is to ascertain with exactness the plan of the great Geometer, to penetrate the veil of material forms, and disclose the thoughts which lie beneath them? When our researches are successful, and when a generous and heaven-eyed inspiration has elevated us above humanity, and raised us triumphantly into the very presence, as it were, of the divine intellect, how instantly and entirely are human pride and vanity repressed, and by a single glance at the glories of the infinite mind, we are humbled to the very dust. INDEX. Acoustics, Application of the Principles of to the Construction of Lecture Rooms. Prof. Henry. 432. Action, Volcanic, Isolation of in Hawaii. Prof. J. D. Dana. 95. Alps, Central, Erratic Phenomena of. Prof. Guyot. 311. Structural Features of the Apallachians compared with those of. Prof. H. Altona Observatory, Correspondence in Relation to. 65. American and British Coals, Economic Values of. Prof. W. R. Johnson. 221. Ammonia, Moisture and Organic Matter in the Atmosphere. Prof. Horsford. 124. 235. Amphiumaina, Habits of in a State of Captivity. Dr. J. L. Le Conte. 194. Analogy, Kirkwood's. Dr. B. A. Gould, Jr. 363. 66 in the Periods of Rotation of the Primary Planets. S. C. Walker. 66 207. of the Ribbon Structure of Glaciers to the Slaty Cleavage of Rocks. Prof. H. D. Rogers. 181. of the Morphology of Cells to that of the Ovum. Dr. W. I. Burnett. 261. Prof. B. Silliman, Jr. 134. Analytical Notation, Geometrical Interpretation of. J. Patterson. 369. Animals, Coral, Structure of. Prof. Agassiz. 68. Radiated, Structure and Homologies of, with Reference to the Systematic Animal Morphology. Prof. Agassiz. 414. Anthracite Coal, Soda in the Ashes of. Prof. E. N. Horsford. 233. Appallachians, Structural Features of, compared with those of the Alps. Prof. H. D. Rogers. 113. Apparent Places of the Stars, General Tables for the Reduction of. Prof. Application of the Principles of Acoustics to the Construction of Lecture Rooms. Application of the Magnetic Telegraph to Astronomical Observations, Improve- Application of the Theory of Least Squares, Comparison of the Results obtained in Applications of Phyllotaxis. Prof. Gray. 438. Aqueous Action. Prof. H. D. Rogers. 239. Ascidia, Embryology of, and Characteristics of New Species from the Shores of Ashes of Anthracite Coal, Soda in. Prof. E. N. Horsford. 233. Astronomical Journal, Establishment of in the United States. Prof. J. S. Hubbard. 378. Astronomical Observations, Improvements in the Application of the Magnetic Tele- Atlantic Ocean, Winds and Currents of. Lieut. Maury. 160. Prof. E. N. Horsford. 124. Axis of Subsidence and Trend of Islands in the Pacific. Prof. J. D. Dana. 321. Batrachians, Urodellian. Prof. Baird. 402. Bisilicate of Magnesia of Dr. Thomson, and Boltonite of Shepard. Prof. B. Boltonite, Remarks on. L. Saemann. 105. 66 of Shepard and Bisilicate of Magnesia of Dr. Thomson. Prof. B. Bone Caves of Pennsylvania. Prof. Baird. 352. Bones of the Dinornis Nova Zealandia. Prof. Chase. 267. Bournon, Count, Indianite of, and the American Mineral of the same Name. Prof. B. Silliman, Jr. 131. Brachiopoda of the Silurian Period, particularly the Leptanidæ. Prof. James British and American Coals, Economic Values of. Prof. W. R. Johnson. 221. Bucholzite of Brande, Sillimanite of Bowen, and Fibrolite of Bournon, Identity of Canada, Geology of. T. S. Hunt. 325. Mineral Waters of. T. S. Hunt. 233. Caves, Bone, of Pennsylvania. Prof. Baird. 352. Cave, New, Discovery of in Kentucky. Dr. L. Feuchtwanger. 355. Cephalopoda, Embryology of. Prof. Agassiz. 409. Change of Level, Fiord's Evidence of. Prof. J. D. Dana. 194. Character, Vegetable, of Xanthidium. Prof. Agassiz. 89. 66 Zoological, of Young Mammalia. Prof. Agassiz. 85. Prof. Agassiz. 157. Chemical Examination of Gorgonia Antipathes. Prof. B. Silliman, Jr. 130. Cholera and Electricity, Connection between. Dr. Hare. 201. Circulation of the Fluids in Insects. Prof. Agassiz. 140. Classification, Natural, of Curves. Rev. Thomas Hill. 101. Clinton Group of New York, Trails and Tracks in the Sandstones of. Prof. Coal, Anthracite, Soda in the Ashes of. Prof. E. N. Horsford. 233. Coals, British and American, Economic Values of. Prof. W. R. Johnson. 221. Coast Survey, Report of the Select Committee on. 357. 66 64 of the United States, Progress of. Prof. A. D. Bache. 162. Comets, Connection of, with the Solar System. Prof. B. Peirce. 118. Committee, Select, on the Coast Survey, Report of. 357. 182. Composition of the Plant by Phytons, and some Applications of Phyllotaxis. Prof. Gray. 438. Composite, Plants of the Order of, from the Sandwich Islands. Prof. Gray. 397. 66 of Comets with the Solar System. Prof. B. Peirce. 118. Connecticut Valley, River Terraces of, and Erosions of the Earth's Surface. Presi- Coral Animals, Structure of. Prof. Agassiz. 68. Correspondence in Relation to the Altona Observatory. 65. Cottus, Fresh Water, of North America, Monograph of. Ch. Girard. 412. Count Bournon, Indianite of, and the American Mineral of the same Name. Crinoids, Fossil, of Tennessee. Prof. G. Troost. 59. Curious Phenomena relating to Vision. Prof. Lovering. 369. Curve, Elastic, and the Motion of the Pendulum, Relation between. Prof. B. Curves, Natural Classification of. Rev. Thomas Hill. 101. Cyanea Fulva, New Species of. Prof. Agassiz. 100. Demonstration, New, of the Parallelogram of Forces. Prof. B. Peirce. 221. Diffusion of Human Knowledge, Plan for. Rev. R. Park. 65. Disappearance of Saturn's Rings, Phenomena attending. G. P. Bond. 221. |