D.

De Beaumont's theory of the elevation of mountain chains, 355.

Decease of Fellows, Associate Fellows, and Foreign Honorary Mem-

bers, 38, 40, 61, 131, 163, 164, 195, 224, 256, 347.

Diclidocarpus, 48.

Dighton rock, the removing of, 322.

Donation, 26, 168.

Draytonia, 49.

DURKEE, SILAS. On Culex pipiens, 168.

E.

Ear, on the voluntary motion of, in man, 355.

Echinocactus, 271.

bicolor, 277.

brevi-hamatus, 271.

cylindraceus, 275.

Emoryi, 275.

flexispinus, 273.

hamatocanthus, 273.

hamatus, 272.

horizonthalonius, 276.

ingens, 275.

intertextus, 277.

Lecontei, 274.

Lindheimeri, 276.

longehamatus, 273.

Muhlenpfordtii, 272.

Parryi, 276.-

pectinatus, 279.

polyancistrus, 272.

polycephalus, 276.

Scheerii, 271.

setispinus, 272.

sinuatus, 273.

Texensis, 276.

Treculianus, 273.

uncinatus, 272.

unguispinus, 278.

viridescens, 275.

Whipplei, 271.

Wislizeni, 274.

Echinocereus radians, 280.

Effluvia, ashes, &c., emitted by volcanoes, nature of, 337.

Elastic sacs, the forms assumed by, 8, 10.

Electrical currents, the induction of, 198.

Ellipse, the property of, 10.

ENGELMANN, GEORGE. Synopsis of the Cactace of the United States,
259. Geography of the Cactus region of the United States, 311.
Epidemics, cause of, 35.

Equation, personal, on the means of diminishing the, 47.

Ericsson engine, on the, 28, 31, 33.

EUSTIS, H. L. On the property of the ellipse, 10. Formula for the
measure of the solidity of a prismoid, 22. On a case of warped
surfaces, 251.

EVERETT, EDWARD. Changes in the locality of the solfa-taras, 337.

F.

Fall of Troy, two distinct dates of, 382.
Families, similarity of form essential, 379.
FARRAR, JOHN, decease of, 38.

FELLOWS elected.

Adams, Charles Francis, 356.

Arnold, Albert N., 205.

Boutwell, George S., 356.

Brewer, Thomas M., 167.

Cary, Thomas G., 257.
Child, Francis J., 205.
Choate, Rufus, 167.
Clark, Henry James, 326.

Cooke, Josiah Parsons, 32.
Cotting, Benjamin E., 59.
Curtis, B. R., 167.

Dexter, William P., 24.

Durkee, Silas, 167.

Ellis, George E., 257.

Frothingham, N. L., 335.
Gould, Benjamin A., 335.
Gray, John C., 205.

Greenough, Richard, 205.
Henck, John B., 257.
Hill, Thomas, 48.

Lee, William Raymond, 42.
Livermore, George, 185.

Lowell, James Russell, 205.
Motley, J. Lothrop, 356.

Parker, Joel, 32.

Parkman, Francis, 195.

Parkman, Samuel, 59.
Peabody, Ephraim, 167.
Peters, C. H. F., 326.
Sophocles, E. A., 335.
Sprague, Charles James, 257.

Stearns, William A., 205.
Torrey, Henry W., 335.
Ware, Charles E., 167.
Winlock, Joseph, 48.
FELLOWS, Associate, elected.

Bryant, William C., 212.

Crawford, Thomas, 212.

Curtis, Moses A., 212.

Dalton, J. C., Jr., 212.

Hayes, Isaac, 346.

Hickok, Laurens P., 346.

Irving, Washington, 212.
Kirtland, J. P., 212.
Mahan, Dennis H., 212.

Powers, Hiram, 212.

Short, Charles W., 212.

Wood, George B., 346.

FELTON, C. C. The present aspect of Greece, 173. On the Pnyx

and Bema at Athens, 210. On silver coins of Athens, 215. Me-
nander in New York, 371.

Fishes, cartilaginous, living and fossil, 63.

Foetal child, transformation of, into phosphorus, 321.

Food, on the value of different kinds of prepared vegetable, 109.

arrowroot, 116.

corn-starch, 112, 113.

farina, 123.

maccaroni, 121.

prepared potato, 122.

rice flour, 120.

sago, 117.

tapioca, 114.

wheat-starch, 119.

Footprints of birds, 193.

Force, on the measure of, 91.

Fossil bones, 109.

Fossil bones of birds, 9.

Fossil fruits and seeds, 3.

Fossils, new species of, 204.
Fusel-oil compound, 11.

G.

GAUSS, C. F., decease of, 195.

Gentianaceæ, on the placentation of, 258.

Glanis, 325.

Gold, at Bridgewater, Vt., 162.

GOULD, A. A. On fossil bones, 109. Ejection of living animals from
the human stomach, 253.

GOULD, B. A., Jr. On personal equation, 47. On error in transit

observations, 48. Misapplication of remarks on record at a previ-
ous meeting, 131. Elements of the fourth comet of 1854, 167.
GRAY, ASA. On Trichomanes, 34. Characters of some new genera
of plants collected in the exploring expedition under Captain Wilkes,
48, 127. Spongilla, 90. California Coniferous tree, 94. Charac-
ters of some new genera and species of plants in a collection, made
chiefly in New Mexico, Southwest California, and Sonora, by George
Thurber, 159. Note on the characters and affinities of Vavæa, 166.
Placentation of certain Gentianaceæ, 258.

Gutta percha, on rendering it elastic, 88.

H.

HALL, JAMES. Fossils, new species of, 204.

Haplopetalon, 53.

HARRIS, DR. THADDEUS WILLIAM, decease of, 224.
HAYES, A. A. On the disappearance of marsh gas, 85. On pho-
tometer, 92. On a patent process for the preservation of the juice
of the India-rubber-tree from decomposition, 108. New process of
coating iron with copper, 162. Change in Cochituate water, 173.
A new species of wax, 190. On hydro-electric currents, 198. On
a specimen of native iron from Liberia, 199. On aluminium, 221.
Change of position among the particles of metal induced by the
percussion of the masses they form, 322. Nature of effluvia and
ashes emitted by volcanoes, 336. On some points of chemical
interest, connected with the manufacture of ductile iron, 341.
Telegraph cable, 355. Carbonaceous deposit, 379.
HAYWARD, GEORGE. Hydrophobia, 60.

Hedgcock's quadrant, 378. Report on, 384.

HENRY, JOSEPH.

On the induction of electrical currents, 198.

Heterandria, 43.
HITCHCOCK, PRESIDENT.

Fossil fruits and seeds, 3.

HOLMES, O. W. On the microscope, 5. On the voluntary motion of
the ear in man, 355. Stand for a microscope, 385.

HORSFORD, E. N. Leprosy, 34. On rendering gutta percha elastic,
88. On the nutritive value of amylaceous articles of food, 89.
Incrustation of Cochituate water-pipes, 89. On the value of differ-
ent kinds of prepared vegetable food, 109. Aluminum, 127.
Transformation of a fœtal child into phosphorus, 321. The value
of saltpetre for the manufacture of nitric acid, 354.
Hydrophobia, 60.

I.

Incrustation, ferruginous, of the Cochituate water-pipes, 89.
Indian arrow-heads, 322.

India-rubber, on the preservation of, 108.

Inscription, Runic, 319.

Invitation from the Committee on the Inauguration of the Statue of

Franklin, 320.

Iron from Liberia, 199.