Clinton Group of New York, Trails and Tracks in the Sandstones of. Prof.
James Hall. 256.

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, Experience of, in Regard to Telegraph Operations. S. C. Walker.

Coast Survey, Report of the Select Committee on. 357.

Comets, Connection of, with the Solar System. Prof. B. Peirce. 118.

Comet, Second Recorded, of 1784. B. A. Gould, Jr. 180.

Committee, Select, on the Coast Survey, Report of. 357.

182.

Composition of the Plant by Phytons, and some Applications of Phyllotaxis.

Prof. Gray. 438.

Composita, Plants of the Order of, from the Sandwich Islands. Prof. Gray. 397.
Connection between Cholera and Electricity. Dr. Hare. 201.

of Comets with the Solar System. Prof. B. Peirce. 118.

Connecticut Valley, River Terraces of, and Erosions of the Earth's Surface. Presi-
dent Hitchcock. 148.

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.

Prof. B. Silliman, Jr. 131.

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.
Peirce. 128.

Curves, Natural Classification of. Rev. Thomas Hill. 101.

Cyanea Fulva, New Species of. Prof. Agassiz. 100.

66

Demonstration, New, of the Parallelogram of Forces. Prof. B. Peirce. 221.
New, of the Parallelogram of Forces. J. D. Oliver. 221.
Description of Certain Mineral Localities in Worcester and Franklin Counties in
Massachusetts. Charles Hartwell and Edward Hitchcock, Jr. 159.
Determination of the Water in the Crystallized Sulphate of Quinine, and a Method
of Testing the Purity of the Commercial Article. Dr. C. Linck. 275.
Differences between Progressive, Embryonic, and Prophetic Types, in the Succes-
sion of Organized Beings through the whole Range of Geological Times.
Prof. Agassiz. 432.

Diffusion of Human Knowledge, Plan for. Rev. R. Park. 65.
Dinornis Nova Zealandia, Bones of. Prof. Chase. 267.

Disappearance of Saturn's Rings, Phenomena attending. G. P. Bond. 221.
Discovery of a New Cave in Kentucky. Dr. L. Feuchtwanger. 355.
Distribution of the Testaceous Mollusca of Jamaica. Prof. C. B. Adams. 147.
Drift, Origin of, and of the Lake and River Terraces of the United States and

Europe. Prof. H. D. Rogers. 239.

Duration of Graptolites in Geological Periods, and their Value in the Identification
of Strata. Prof. James Hall. 351.

Duration and Variation of Winds, Instrument for Measuring. Prof. J. H. Coffin.

Earth's Surface, Erosions of. President Hitchcock. 148.

Economic Values of British and American Coals. Prof. W. R. Johnson. 221.
Elastic Curve, Relation to the Motion of the Pendulum. Prof. Peirce. 128.
Electricity and Cholera, Connection between. Dr. Hare. 201.

386.

of a Plate of Zinc buried in the Earth, Experiments on. Prof. Loomis.

Electro-Dynamic Forces. Prof. Lovering. 278.

196.

Elephant, Fossil Remains of, found in Vermont. Prof. Agassiz. 100.
Embryology of Ascidia, and the Characteristics of New Species from the Shores of
Massachusetts. Prof. Agassiz. 157.

Embryology of Cephalopoda. Prof. Agassiz. 409.

Erratic Phenomena of the White Mountains. Prof. Guyot. 308.

of the Central Alps. Prof. Guyot. 311.

Erosions of the Earth's Surface. President Hitchcock. 148.

Establishment of an Astronomical Journal in the United States. Prof. J. S. Hubbard.

Prof. S. S. Haldemann. 426.
Prof. J. D. Dana. 194.

378.

Ethnology, Linguistic, with Illustrations.
Evidence, Fiord's, of a Change of Level.
Examination, Chemical, of Gorgonia Antipathes. Prof. B. Silliman, Jr. 130.
Experiments on the Electricity of a Plate of Zinc buried in the Earth. Prof. Loomis.

196.

Fat, Intestinal, of a Large Sea Turtle, Investigation of. Dr. C. Linck. 384.
Features, Structural, of the Appallachians, compared with those of the Alps.
Prof. H. D. Rogers. 113.

Fibrolite, of Bournon, Identity of with Kyanite. Prof. B. Silliman, Jr. 111.
Fiord's Evidence of a Change of Level.

Fluvicola Herricki, Metamorphosis of.

Prof. J. D. Dana. 194.

Dr. Le Conte. 272.

Fluids, Circulation of, in Insects. Prof. Agassiz. 140.

Forces, Electro-dynamic. Prof. Lovering. 278.

a New Demonstration of the Parallelogram of. Prof. B. Peirce. 221.

a new Demonstration of the Parallelogram of. J. D. Oliver. 221.

Fossil Remains from Broome County, N. Y. W. C. Redfield. 255.

66

Myliobates, New Species of, from the Eocene of South Carolina. Dr. R.
W. Gibbes. 193.

Fossil Crinoids of Tennessee. Prof. G. Troost. 59.

66

Remains of an Elephant found in Vermont. Prof. Agassiz. 100.

Fossils, New, from the Cretaceous, Eocene, and Pliocene, of South Carolina, Ala-
bama, and Mississippi. Dr. R. W. Gibbes. 193.

Fractions which occur in Phyllotaxis, Mathematical Investigation of. Prof. B.

Fresh-water Cottus of North America, Monograph of. Ch. Girard. 412.
Fused Sulphur, the Color of. Prof. E. N. Horsford. 234.

Gadolonite in New York. Prof. B. Silliman, Jr. 134.

Gaussian Tables. Dr. B. A. Gould, Jr. 362.

General Tables for the Reduction of the Apparent Places of Stars. Prof. Hub-
bard. 274.

Geodesy, Results obtained in, by the Application of the Theory of Least Squares.

Prof. A. D. Bache. 102.

Geological Periods, Duration of Graptolites in, and their Value in the Identification
of Strata. Prof. James Hall.

351.

Geological Structure of Keweenaw Point. Dr. C. T. Jackson. 288.
Geology of Canada. T. S. Hunt. 325.

Dr. C. T. Jackson. 283.
J. Patterson. 369.

Geometrical Interpretation of Analytical Notation.

Glaciers, Analogy of the Ribbon Structure of, to the Slaty Cleavage of Rocks.

Prof. H. D. Rogers. 181.

Gorgonia Antipathes, Chemical Examination of. Prof. B. Silliman, Jr. 130.
Graptolites, their Duration in Geological Periods, and their Value in the Identifica.
tion of Strata. Prof. James Hall.

351.

Green Picrolite and Slaty Serpentine, from Lancaster County, Pa., Analysis of.
Prof. B. Silliman, Jr. 134.

Habits of the Amphiumaina in a State of Captivity. Dr. J. L. Le Conte. 194.
Curious, of a Species of Asilus. Dr. J. L. Le Conte. 195.

Hawaii, Isolation of Volcanic Action in. Prof. J. D. Dana. 95.

History of Phalangopsis, a Genus of Orthoptera, with three New Species, two of
which form a New Sub-genus. Prof. S. S. Haldeman. 346.

Hydroid Polypi, Structure and Homologies of the Radiated Animals with Refer-
ence to the Systematic Position of. Prof. Agassiz. 389.

Identity of Sillimanite of Bowen, of Bucholzite of Brande, and of Fibrolite of
Bournon, with the Species Kyanite. 111.

Improvements in the Application of the Magnetic Telegraph to Astronomical
Observations. Prof. Mitchell. 274.

Indianite of Bournon, and the American Mineral of the Same Name. Prof. B.
Silliman, Jr. 131.

Infusoria, Process for Detecting the Remains of, in Sedimentary Deposits. Prof.
J. W. Bailey. 409.

Insects, Circulation of Fluids in. Prof. Agassiz. 140.

Instrument for Determining the Variation and Duration of Winds. Prof. J. H. Coffin.

Instruments, Meteorological. Prof. Guyot. 274.

Instrument for Determining the Quantity of Ozone. Prof. Horsford. 127.

Interpretation, Geometrical, of Analytical Notation. J. Patterson. 369.

386.

Intestinal Fat of a Large Sea Turtle, Investigation of. Dr. C. Linck. 384.
Investigation, Mathematical, of the Fractions which occur in Phyllotaxis. Prof. B.

Peirce. 444.

Investigation of the Intestinal Fat of a Large Sea-Turtle. Dr. C. Linck. 384.
Islands, Trend of, in the Pacific. Prof. J. D. Dana. 321.

Islands, Sandwich, Plants of the Order Compositæ from. Prof. Gray. 397.
Isolation of Volcanic Action in Hawaii. Prof. J. D. Dana, 95.

Jamaica, Distribution of the Testaceous Mollusca in. Prof. C. B. Adams. 147.
Journal, Astronomical, Establishment of in the United States.

Hubbard. 378.

Jura, Upheaval of. Prof. Guyot. 115.

Dr. C. T. Jackson. 288.

Kentucky, Discovery of a New Cave in. Dr. L. Feuchtwanger. 355.
Keweenaw Point, Geological Structure of.
Kirkwood's Analogy. Dr. B. A. Gould, Jr. 363.

Knowledge, Plan for the Diffusion of. Rev. R. Park. 65.

Lake Superior, Mirage on. Dr. C. T. Jackson. 143.

66

Prof. J. S.

Geology, Mineralogy, and Mines of. Dr. C. T. Jackson. 283.

แ Mineral Region of. James S. Hodges. 301.

Lake and River Terraces of the United States and Europe, Origin of. Prof. H.

D. Rogers. 239.

Larva of Physocalus Inflatus. Prof. S. S. Haldeman 347.

Least Squares, Results obtained in Geodesy by the Application of the Theory of.

Lecture-Rooms, Application of the Principles of Acoustics to the Construction of.
Prof. Henry. 432.

Leptanida of the Silurian Period. Prof. James Hall. 347.

Leucine and its Homologous Relations.
Leuciscus Pulchellus, Observations on.
Level, Fiord's Evidence of a Change of.
Linguistic Ethnology, with Illustrations.
Localities, Mineral, in Worcester and

T. S. Hunt. 231.
W. O. Ayres. 402.

Prof. J. D. Dana. 194.
Prof. S. S. Haldeman. 426.

Franklin Counties, Mass., Description of.

Charles Hartwell and Edward Hitchcock, Jr. 159.

Magnesia, Bisilicate of, of Dr. Thomson. Prof. B. Silliman, Jr. 109.

Magnesium, Ammonio-chloride of. Dr. C. Linck. 235.

Magnetic Telegraphs, Improvement in the Application of, to Astronomical Obser-
vations. Prof. Mitchell. 274.

Mammalia, Young, Zoological Character of. Prof. Agassiz. 85.

Mastodon Angustidens. Dr. John C. Warren. 93.

Mathematical Investigation of the Fractions which occur in Phyllotaxis. Prof. B.

Peirce. 444.

Medical Geology. I. A. Lapham. 406.

Meridian, Prime. Lieut. C. H. Davis. 78.

66 American Prime. Prof. I. F. Holton.
Memphis, Observations on the Mississippi River at.
Metamorphosis of Fluvicola Herricki. Dr. Le Conte.
Meteorological Instruments. Prof. Guyot. 274.

381.

R. A. Marr, U. S. N. 335.
272.

Method of Testing the Purity of the Commercial Article of Quinine. Dr. C. Linck.

Mica, Optical Properties of. Prof. B. Silliman, Jr. 133.
Mineral Waters of Canada. T. S. Hunt. 233.

275.

66 Localities in Worcester and Franklin Counties, Mass.
and Edward Hitchcock, Jr. 159.

Charles Hartwell

Mineral Region of Lake Superior. James S. Hodge. 301.
Mirage on Lake Superior. Dr. C. T. Jackson. 143.
Mississippi River, Sediment of. 334.

66

66

66

Rapidity of. R. A. Marr, U. S. N. 336.

Observations on, at the Navy Yard at Memphis. R. A. Marr,
U. S. N. 335.

Moisture, Ammonia, and Organic Matter of the Atmosphere. Prof. E. N. Horsford.

Mollusca, Testaceous, Distribution of, in Jamaica. Prof. C. B. Adams. 147.
Monograph of the Fresh-water Cottus of North America. Ch. Girard. 412.
Morphia, Valerianate of. Dr. M. Wyman and Prof. E. N. Horsford. 92.
Morphology, Animal. Prof. Agassiz. 414.

261.

124.

Dr. R. W. Gibbes. 77.

Morphology of Cells, New Points in. Dr. W. I. Burnett.
Mosasaurus and other Allied Genera in the United States.
Motion of the Pendulum, Relation of, to the Elastic Curve. Prof. B. Peirce. 128.
Myliobates Fossil, New Species of, from the Eocene of South Carolina. Dr. R. W.

Natural Classification of Curves. Rev. Thomas Hill. 101.

New Cave, Discovery of, in Kentucky. Dr. L. Feuchtwanger. 355.

Fossils from the Cretaceous, Eocene, and Pliocene, of South Carolina, Alabama,
and Mississippi. Dr. R. W. Gibbes. 193.

New Points in the Morphology of Cells. Dr. W. I. Burnett. 261.

Demonstration of the Parallelogram of Forces. Prof. B. Peirce. 221.

Species of Fossil Myliobates from the Eocene of South Carolina. Dr. R. W.

Gibbes. 193.

New York, Gadolonite in. Prof. B. Silliman, Jr. 134.

Notation, Analytical, Geometrical Interpretation of. J. Patterson. 369.

North America, Monograph of the Fresh-water Cottus of. Ch. Girard. 412.

Observations on Leuciscus Pulchellus. W. O. Ayres. 402.

66

on the Mississippi River at the Navy Yard at Memphis. R. A. Marr,
U. S. N. 335.

Observatory, Altona, Correspondence in Relation to. 65.

Ocean, Atlantic, Winds and Currents of. Lieut. Maury. 160.

Operations, Telegraphic, Experience of the Coast Survey with. S. C. Walker.

Optical Properties of Mica. Prof. B. Silliman, Jr. 133.

182.

Origin of the Drift, and of the Lake and River Terraces of the United States and

Europe. Prof. H. D. Rogers. 239.

Organic Matter in the Atmosphere. Prof. E. N. Horsford. 124.