138 
PHILOSOPHICAL SOCIETY OP WASHINGTON, 
Page. 
Galen, cited on life. v 51 
Galileo, cited on Saturn’s rings. vi 44 
Gallaudet, E. M.. communication on uncon¬ 
scious cerebration. Title only .li 48 
the international convention of the 
teachers of the deaf and dumb, at 
Milan. Abstract . iv 55 
remarks on gesture language and visible 
speech. -vi 77 
Gamgee, A., cited on muscular contrac¬ 
tion.V 59, 60 
nerve currents. v 62 
Gardner, J. T., communication on the use of 
railroad levellings in determining ele¬ 
vations on the great lakes and rivers 
in the United States and in the Rocky 
Mountains. Abstract and reference...ii 23 
Gases, Theory of.. v 138 
Gauss, cited on computation of tt. i 59 
Gauss’ algorithm. vii 102 
method for computirtg variation of ele¬ 
ments of an orbit. vlii 41 
transformation. vii 110 
Gay-Lussac, Law of. v 139 
Gems, Coloring agent of. ii 31 
General committee rules. See Standing 
Tillies. 
Gentile system of the Omahas. iii 128 
Geographical distribution of mammals. ii 26 
terms and fishery treaties. i 39 
Geography, List of papers on (see also 
Oceanography and Seismology): 
official report of the Yellowstone expedi¬ 
tion of 1870. G. C. Doane. Communi¬ 
cated by S. F. Baird. Reference ....i 21 
[exhibition of map of the headwaters of 
the Yellowstone and Lewis rivers ] M. 
C. Meigs. No abstract .i 21 
[geographical centre of the United States.] 
J. E. Hilgard. Abstract .i 22 
on the results of travels in Alaska and the 
determination of the position of Fort 
Yukon. C. W. Raymond. 'Communi¬ 
cated by T. L. Casey. Reference.... .i 22 
[exhibition of dust from Armenia.] T. 
Antisell. No abstract.. .i 25 
on the relative value of Alaska to the 
United States, as compared with that 
of other territorial acquisitions. W. 
H. Dali. Abstract and reference .i 25 
on the distribution of the population of 
the United States. J. E. Hilgard. Title 
only .i 29 
on observations made on a journey to Cali¬ 
fornia. J. Henry. Title only .i 31 
^ ^ Page. 
Geography, List of papers on—Cont’d. 
on the westward movement of the popula¬ 
tion of the United States. J. E. Hil¬ 
gard. Reference .i 35 
on the misapplication of geographical 
terms, as bearing especially on the 
question of the fishery right treaties. 
R. D. Cutis. Abstract .i 39 
recent explorations in Syria under the 
auspices of the Palestine exploration 
fund. Prof. Porter. Title only .1 54 
^ on certain recent geological and geograph¬ 
ical researches in Arizona and Nevada. 
G. K. Gilbert. Abstract . .i 54 
[a visit to Egypt.] W. T. Sherman. No 
abstract.. .i 63 
on the fluctuations of the river Nile. J. 
Henry. Title only .i 63 
[letter on the Hayden Survey.] J. Curtis. 
Communicated by E. B. Elliott. No ab 
stract .i 63 
on some measurements of heights by a 
pocket aneroid. W. Hark ness. Title 
only .i 64 
[on the Goldschmidt aneroid barometer.] 
J. E. Hilgard. No abstract ..i 65 
[travels in Turkey and the Caucasus.] W. 
T. Sherman. No abstract .i 65 
on the proceedings of the International 
Metrological Commission. J. E. Hil¬ 
gard. Title only .1 68 
on the habitability of the elevated plateaus 
of the West. B. Alvord. Title only...\ 74 
on the use of the canons of the Colorado 
for weighing the earth. G. K. Gilbert. 
Title only .i 88 
on the recent determination of the longi¬ 
tude between Paris and Greenwich. 
J. E. Hilgard. Title only ..i 89 
on some of the results of the Polaris North 
Pole Expedition. E. Bessels. Refer¬ 
ence .T..i 92 
a method of describing and locating with 
ease the approximate positions of geo¬ 
graphical regions. J. M. Toner. Title 
only .i 97 
on two bricks from the great wall of China. 
F. M. Endlich. Title only .i 98 
on the alluvial basin of the Mississippi 
river styled the delta. C. G. Forshey. 
In full ...i 98 (10) 
on the use of railroad levellings in deter¬ 
mining elevations on the great lakes 
and rivers in the United States and in 
the Rocky Mountains. J. T. Gardner. 
Abstract and reference .ii 23 
