13G 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Page. 
Endlich, F. M., communication on—Cont’d. 
two bricks from the great wall of China. 
Title only .i 98 
specimens of meteoric iron from Chi¬ 
huahua, Mexico, and the structure of 
meteorites in general. Title only .1 98 
the occurrence of pure tellurium in cer¬ 
tain gold mines of Colorado. Title 
only . i 101 
the coloring agent of gems. Abstract, 
ii 31 
some interesting cases of metamor¬ 
phism. Title only . iii 27 
remarks on the glacial period.li 36 
Endowment of research.•viil xli 
Energy.vii G1 
Conservation and dissipation of.i 27 
Engelman, Dr. G., cited on Quercus.iv 110 
English sparrow question.x 16 
Entomology. See Zoology. 
Eotvos, cited on sounds produced by me¬ 
teors.ii l‘)7 
Epicurus cited on philosophy.vii xxx 
Erie, Altitude of Lake.ii 23 
Erosion as related to displacement.ii 75 
by drifting sand.... . i 57 
Errata.ii p. 4 of cover, iii 148, vi 162, x 114 
Errors, Composition of.v 106 
respecting the North American Indians..!! 175 
Theory of.vi 138,152 
Eruption, Latest, in Northern California, 
ix 46 
Theories of.vi 87 
Eskimo shell heaps.. ii 65 
Estimation of manganese as pyrophosphate, 
ii 132 
Ether, Hypothesis of an.vi xxix 
Ethnology. See Anthropology. 
Eucalyptus on the Roman campagna.vi 36 
Euler ignored by Am. Phil. Soc.viii xxxvii 
Euler’s theorem.x 101 
Eulogy on A. D. Rache.i 35 
A. A. Humphreys.vii 4 
Evolutes.vii 87 
Evolution and phthisis.ii 125 
Methods of.vi xxvii 
of the bow and arrow. ix 44 
elements.vii 16 
Expansion and buckling of ice fields.li (22) 
Experimentation.li 163, vii li 
Explosion at Flood Rock,„.viii 28 
“ Explosion” of meteor explained.;.ii 143 
Exposure of thermometers.vi 46, vii 80 
Eye, Optical defects of.... i 22 
Eyes, Apparatus for testing....iii 53 
shining in the dark.vii 13 
Page. 
Palconidse, Natural arrangement of.ii 41 
Fall line.ix 23 
Fallacies concerning the deaf.vi 48 
Fallacy as to the theory of gravitation.v 85 
Faraday, cited on matter.vii 48 
Farquhar, Edward, cited on personal vocab¬ 
ulary.ii (18) 
communication on certain remarkable 
effects of lightning. Read by Joseph 
Henry. Title only .i 42 
dreams in their relation with psychol¬ 
ogy. Abstract .vi 37 
remarks on the aurora.iv 22 
tornadoes.vii 3 
thunder storms.viii 11 
determining the direction of sound..viii 13 
Farquhar, Henry, communication on exper¬ 
iments in binary arithmetic. Abstract, 
V 125, vi 3 
further experiments in binary arith¬ 
metic. Abstract .vi 38 
form of least-square computation. In 
fall .vi 150 
the problem discussed bi' Mr. Alvord. 
Abstract .vi 152 
the theoretical discussion in Prof. P. G. 
Tait’s “Encyclopedia Britannica” 
article on mechanics. Abstract .vii 29 
empirical formulae for the diminution 
of amplitude of a freely-oscillating 
pendulum. Abstract .vii 89 
a Fonetic ^Ifabet. Abstract .ix 17 
a comparison of the Boss and Auwers 
declination standards. Abstract and 
reference .ix 53 
a problem in probabilities. Abstract...'s. 88 
a solution and generalization of a prob¬ 
lem requiring the division of a rec¬ 
tangle into parts which form a square. 
No abstract . x 96 
remarks on standard time.v 114 
infinitesimals.vi 135 
drifting buoys.vii 15 
earth tremors.viii 28 
Fault at the base of the Wasatch Moun¬ 
tains.ii 103 
near Harper’s Ferry.vi 30 
scarps.ii 195 
Faults, Geologic.ii 75, 76 
in the Sierra Nevada......ix 4, 5 
of the Great Basin.ix 5 
Ferguson, J., observation of supposed trans- 
Neptunian planet.iii 20 
Ferrel, William, cited on deflection of rivers 
by rotation.vii 22 
law of storms.i lOO 
