164 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Page. 
Physics, List of papers on—Cont’d. 
a slight modification of the Newtonian 
formula of gravitation. W. B. Taylor. 
Abstract . viii 39 
Can the attraction of a finite mass be infi¬ 
nite? C. H. Kummell. In full . viii 58 
Newton’s vis. M. H. Doolittle. Title only, 
X 38 
the free cooling of a homogeneous sphere 
initially heated to a uniform tempera¬ 
ture. R. S. Woodward. Reference .x 90 
the conditioned cooling of a homogeneous 
sphere. R. S. Woodward. Reference..^. 103 
Physics of the Mississippi river. i (13) 
Piedmont region. ix 24 
Pile of balls. iii 76 
Piles bored by teredo. v 98 
Pisciculture. x 55 
Plains, Artesian wells on the. v 101 
Plane curves, Contact of. vi 157 
Planet, Centre of apparent disk of. ii 181 
search for intra-Mercurial. li 85 
supposed discovery of a trans-Neptunian, 
iii 20 
Planetary mass determined from two satel¬ 
lites. vi 132 
motion as .affected by meteoric matter, 
ii 188, 189, 190 
motions.. iii 26, vi 41 
perturbations of the moon. vi 136 
Planets, Theory of. iv 57 
Plants, Climate of.. ii 183 
on Roan Mountain.. . iv 63 
Plateau region. i 55, vii 76 
Plato cited on philosophy. vii xxxvi 
Plethysmographs. v 77 
Pleurotomaria, Notch in shell of.. iii 76 
Plover Bay, Alaska. iv 124 
Plucker, Prof. J.,cited on Malfatti’s problem 
ii 118 
Plumb-line deflection. ..ii 82, vii 92,101, ix 15, 53 
Poggendorf corrections in thermometrv...ix 29 
Poinsot, Louis, cited on impact of inelastic 
bodies. v 131 
Poisoned arrows. ii 180, 182 
Poisson cited on temperature of space. ii 73 
Polar expedition. ii 8;) 
Polaris expedition...... i 92 
Polarization of light by a narrow slit.iii 119,124 
Pole, Shifting of the earth’s. viii 10 
Political Economy, List of papers on ; 
on the statistics of the borrowing power of 
the United States. E. B. Elliott. Title 
only .i 29 
on international coinage. E. B. Elliott. 
TW^nnly . .. i 75 
Page, 
Political Economy, List of p.apers on— 
Cont’d. 
[change in value of dollar.] E. B. Elliott. 
No abstract .i 91 
on the credit of the United States, as 
shown by the value of its securities. 
E. B. Elliott. Title only .i 109 
on the transition in Germany, and the 
Scandinavian nations of Sweden, Nor¬ 
way, and Denmark, from the silver 
standard of coin,age and money of ac¬ 
count to a gold standard. E. B. Elli¬ 
ott. ii 25 
the mutual relations as to price of gold, 
silver bullion, silver coin, and green¬ 
backs. E. B. Elliott. Title only .ii 50 
mutual relation as to price of gold, green¬ 
backs, silver bullion, and silver coin. 
E. B. Elliott. In full . .' .ii 52 
two propositions, now before Congress, for 
changing the coin of the United States. 
E. B. Elliott. Title only .ii 68 
monetary standards. E. B. Elliott. Title 
only .ii 85 
mutual relations of gold and silver, and of 
prices of commodities. E. B. Elliott. 
Abstract ..ii 87 
optional monetary standards. E. B. Elli¬ 
ott. Title only .ii 135 
the progress of international coinage in 
France and America. E. B. Elliott. 
Title only .iii 27 
the subject of international coinage. E. 
B. Elliott. Abstract .iii 38 
the silver question. C. E. Dutton. In 
full .iii 78 
the , silver question. Symposium. Ab¬ 
stract .iii 107 
the construction of the Government sink¬ 
ing fund. E. B. Elliott. Abstract...xli. 113 
the principles of taxation. S. Newcomb. 
Title only .iii 119 
the distribution of loans in the Bank of 
France, the national banks of the 
United States, and the Imperial Bank 
of Germany. J. J. Knox. Abstract, 
iv 31 
[bi-metallism.] E. B. Elliott. Abstract, 
iv 141 
accrued interest on Government securi¬ 
ties. E. B. Elliott. Title only .v 21 
on the credit of the United States, past, 
present and prospective. E. B. Elliott. 
Title only .v 102 
on some formulae relating to Government 
securities. E. B. Elliott. Title only.,.-v 106 
