166 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Page. 
Prognostication for the winter of 1882-83.... v 122 
Proorthode. vi 123 
Protagon. v 75 
Protoplasm, Possibilities of. v 102 
Psychical research.x 8 
Psychology. v 72 
Psycliology, List of papers on : 
on logical algebra. C. S. Peirce. Refer¬ 
ence . i 88 
on the number of words used in speaking 
and writing. E. S. Holden. In full, 
ii 28, (16) 
unconscious cerebration. E, M.Gallaudet. 
Title only . ii 48 
dreams in their rel.ation with psychology. 
E. J. Farquhar. Abstract . vi 37 
the atomic philosophy, physical and meta¬ 
physical. J. C. Welling. Presidential 
address. In full . vii xxix, 81 
the application of physical methods to in¬ 
tellectual science. R. D. Mussey. Ab¬ 
stract . vii 18 
Are there separate centers for light-, form-, 
and color-perception? S. M. Burnett. 
Abstract and reference . vii 72 
recent experiments on reaction time and 
the time sense. G. S. Hall. Title 
only . viii 4 
modern ideas of brain mechanism. F. 
Baker. Title only . viii 17 
anthropometric and reaction-time appa¬ 
ratus. J. S. Billings and W. Matthews. 
Abstract .. viii 25 
an attempt at a theory of odor. F. W. 
Clarke. Abstract . viii 27 
the frequency of coincidences. L. F. 
Ward. Abstract .x 8 
Psychrometer, Sling. viii 25 
Publication of mathematical papers. ..vi 115, 135 
1 of bulletin. See Bulletin. 
Publications of scientific societies. ..viii xxxvii 
the Philosophical Society.x 114 
Pumpelly, Prof. R., Researches on sewage in 
soils by. iv 38 
Pupation of the Nymphalidae. iii 41 
Pyrethrum powder.... vii 10 
Pythagorean philosophy. vii xxxiii 
Q,uadrature of circle. i 57 
Quadratures, Approximate. ii 48 
Quadric transformation of elliptic integrals, 
vii 102 
Quaternary climate of the Great Basin. v 21 
deposits of western Iowa and eastern Ne¬ 
braska. iv 120 
of the middle Atlantic slope.x 16 
Page. 
Quimby, Prof., cited on the aurora of Feb. 
14,1872.i 48 
Quotients of space-directed lines.x 105,106 
RadclifFe, C. B., cited on muscular contrac¬ 
tion .V 59, 61 
Radiometer.ii 80 
Radiophony.iv 143, 183 
Railroad levellings and their hypsometric 
value.ii 23 
trains. Resistance of. iii 20 
Rain-fall and illiteracy.i 68 
Rain-gauges at different elevations.ii 49 
Rainier and its glaciers... x 10 
Ramsey,-, letter on the tides of the Bay 
ofFundy. Communicated by J. J. Wood¬ 
ward. Title only .i 94 
Rankine, W. J. M., cited on reconcentration 
of energy.v 172 
Ratio of circumference to diameter.i 57 
Raven6, Gustave, communication on the as¬ 
teroids. Title only .viii 18, 54 
the theory of Mercury. Abstract .viii 41 
Rayleigh, Lord, cited on sound produced by 
heat.iv 150,183 
Raymond, C. W., communication on the re¬ 
sults of travels in Alaska and the de¬ 
termination of the position of Fort 
Yukon. Communicated by T. L. Casey. 
Reference . i 22 
letter on transit of Venus, 1874. Commu¬ 
nicated by A. Hall. Abstract .ii 31 
Reaumur cited on the pupation of the Nym- 
phalidse.iii 41 
Reed, Henry, communication on the phy.'si- 
ology of civilization. Title only .iii 20 
Reference indexing.x 38 
Refraction in the principal meridians of a 
triaxial ellipsoid.vi 4 
of sound.ii 57, 167 (48), v 35, 39, 44 
Uncertainty of correction for atmos¬ 
pheric .i 60 
Rejection of doubtful observations.vi 152 
Religion and science.ii 16, 224 
Removal of place of meeting.x xxxi, 10, 31 
Remsen,Prof. Ira, Researches on impure air 
by. iv 37 
Report of committee to collect information 
relative to the meteor of December 
24th, 1873.ii 130 
Representation of comet orbits by models, 
X 28 
Research, Endowment of..viii xli 
Method of.i’i 163, iv 40, vii li, x 4 
Resistance of railway trains.iii 20 
Resisting medium in space.i 34, 30 
