162 
PHILOSOPHICAL SOCIETY-OF WASHINGTON. 
Page. 
Optics, List of papers on—Cont’d. 
why the eyes of animals shine in the dark. 
S. M. Burnett. Abstract and reference, 
vii 13 
the Javal and Schiotz ophthalmometer. 
S. M. Burnett. Title only .viii 11 
on a device for viewing the sun by light 
of any desired wave length. W. Hark- 
ness. Abstract .x 13 
Orange Mountain, N. J.viii 19 
Orbit of comet, Correction of.ii 22 
Hyperion.x 90,104 
Swift’s comet.iv 59 
Orbits illustrated by models.x 28 
of Titan and Hyperion.iii 26, 40 
Special case in elliptic.vii 122 
Ore deposition by replacement.vi 32 
Organization of the Society.i v, 19, 20, 21 
Orthocenter.viii 47 
Osborne, J. A., cited on the pupation of the 
Nymphalidge.iii 41 
Osborne, J. W., communication on a new 
meteorological instrument. Abstract, 
ii 63 
the study of meteorology in regard to 
the causes of yellow fever. Title only, 
iii 21, 27 
a curious manifestation of force by the 
wind. Title only .iii 27 
a ease of peculiar corrosive action on 
metallic tin. Title only .iii 44 
remarks on auroras.iv 22 
Otis, G. A., Biographical sketch of.iv 171 
Bibliography of..iv 181 
communication on fractures of the inner 
table of the cranium. Title only .i 73 
a new spirometer. Title only .i 94 
Death of..iv 120 
Resolutions on the death of.iv 134 
Ox-eye daisy as an insecticide.....vii 12 
Pacific Ocean, Temperatures and currents 
of.ii 192 
Painting with dry colors.viii 14 
Paleontology. (See Zoology and Botany.) 
Palaeotherium, Structure and shape of..i 99 
Pamphlets, Care of.viii 29 
Papers read to the Society. (See Acoustics, 
Anatomy, Anthropology, Archaeology, 
Astronomy, Biography, Biology, Botany, 
Calendars, Chemistry, Electricity, Geog¬ 
raphy, Geology, Mathematics, Meteor¬ 
ology, Microscopy, Mineralogy, Miscella¬ 
neous, Oceanography, Optics, Physics, 
Political Economy, Psychology, Seis- 
Page. 
mology, Social Science, Thermometry, 
Zoology.) 
Statistics of the Society’s.x 32 
Papyrus Ebers.ii 64 - 
Parallax of a Tauri.x 91 
Methods of measuring . v 39 
Parker, Peter, communication on the me¬ 
teor of December 24, 1873. No ab¬ 
stract . i 94 
Joseph Henry. In full . ii 368 
remarks on Chinese vocabularies... ii 28 
calendars. ii 30 
electrical treatment. ii 40 
origin of the American Indians. ii 94 
report of the committee to collect infor¬ 
mation relative to the meteor of De¬ 
cember 24th, 1873. In full. Map and 
2. figures . ii 139 
resolutions on the death of Salmon P. 
Chase. .. t . i 87 
Patterson, H. N., cited on the flora of Illi¬ 
nois. iv 99 
Paucker, Prof. M. G., cited on Malfatti’s 
problem. ii 116 
Paul, H. M., communication on earth trem¬ 
ors as shown by astronomical observa¬ 
tions. Abstract . iii 120 
problems connected with the physics of 
the earth’s crust. Title only . viii 17,18 
the Flood Rock explosion. Title only, 
viii 28 
the Charleston earthquake. Abstract..i.-x. 41 
remarks on sun glows. vii 35 
earthquakes. vii 73, ix 42 
the topophone. viii 13 
dry painting by the Japanese. viii 16 
time determinations. viii 58 
graphics. x 5 
Pavements, Failure of w-ooden. ii 26 
Peale, T. R., Death of.. viii 10 
Peirce, Benjamin, cited on curves similar 
to their evolutes. vii 87 
communication on the heat of the sun. 
Abstract . i 31 
the theories of the nature of comet’s 
tails. Reference . i 74 
Death of.. iv 21, 23 
Remarks commemorative of... iv 23 
Resolutions on death of.. iv 23 
Peirce, C. S., cited on verification of predic¬ 
tions. vii 124 
communication on the appearance of 
Encke’s comet as seen at Harvard Col¬ 
lege Observatory. Reference .i 35 
stellar photometry. Reference. .i 63 
