INDEX TO VOLUMES I-X. 
Page. 
Peirce, C. S., communication on—Cont’d. 
the coincidence of the geographical dis- 
tribution of rain fall and illiteracy, as 
shown by the statistical maps of the 
ninth census reports. Abstract...... wok 68 
logical algebra. Reference... aA 88 
quaternions, as developed from the gen- 
eral theory of the logic of relatives. 
Title Only........c00c00 Reeentinnchtnaccacesceasenes i 94 
various hypotheses in reference to 
BAGO. LUE ONUY-ceancancecaesuccseiscencojcncues i 97 
Peirce’s criterion........ facaaten SeNagnaadsasaderasees wi 155 
Pendulum formule ............222eeeeseeeeeee: vii 89, 101 
Perception of color, form, and light......... vil 72 
Periodic integrals......... essere sped stesnacssi LOO 
law of the amical elements. een Wad 15 
Permian formation of North Miiorica, sua 67, 104 
PACU STATE CHL OTG AI necsgavnroxveasades abaesesvosen scien ii 38 
Perturbations of moon’s motion, Computa- 
tion of..... sess WA 136 
Polyhymnia by Jupiter...........ssecsee vili 54 
Peru, Meteorology Of..........s++ apsacedncaaendncnee di 35 
Peters, Prof. C. H. F., cited on supposed 
trans-Neptunian planet...........0.00- iii 20 
letter on transit of Venus, 1874. Commu- 
nicated by A. Hall. Abstract... .s000 ii 31 
Petrographic methods...........+ ceeuerececehense vil 36 
Phenomena, Physical basis Of.............00008 vii 40 
Philosophical Society of Washington.....wiil xlv 
BERS HUO Rtctacissssdesstess-ssccccsaceescsacsecsensece x 47 
why this name was Chosen......00.e000 iv,x45 
Peel DRUG Eacccvaceraceecseccsiscsesenesecsiecsecs ix 17 
Phosphorescent clocks....... aohtantcocte ecard iii 33 
Phosphorus and cerebral activity......... coos tO 
PHOtO-ENYraAviNg.......0sseeesseees crecett bere mcocaedy SAD: 
Photographie panorama......... Reeeeenes parenausara v 21 
Photographing the sun’s corona........... sseeddd 117 
transit of Venus, 1882............ Bape dtsaneabse vi 21 
Photographs of transit of Venus, 1874........ ii 31 
Photography as an aid to astronomy...........4 28 
ATIC LO LOSCATCH....c-cosursscusseventesnesen ee eal 
COMPOSIEC. 0.0. ccrreeseecsece 25 
Photometry, Stellar 63 
PAU MOUOsstansascveces tcoasaccnashacscaasstateccenescas iv 143 
PTT SIS pespuynesucednewseresecenssos's stecuatateprentenateasss ii 124 
Physical geography. 
Geology.) 
Physical-geographical divisions of the south- 
eastern portion of the United States, 
ix 22 
Physical investigations by Joseph Henry..ii 271 
method in intellectual sciences...........wid 18 
Physics, List of papers on (see also Acous- 
tics, Optics, Electricity) : 
on the nature and origin of force. W. B. 
Taylor. Abstract and referencés...00ved 27 
(See Geography and 
163 
Page. 
Physics, List of papers on—Cont’d. 
on the fatigue of metals. Major King. 
STN iE OT escecusesunshedsesisiascesaseonsiacsasss accent i 53 
on waves, molecules, and atoms. W. B 
PRA VIO AASCE CCl aroccssedecusesacesccavacconses i 66 
on the rectilinear motion of a particle 
toward an attracting centre. A. Hall. 
BefErence.re...00000 ainaatosctenckacearparcen ators i 88 
on the motion of a particle sony an at- 
tracting centre. H. H. Bates. Title 
ON Y..0.canceoeee aungsenpeuneateaueeintcenede auseers sae i 89 
on the nature of the force of gravitation. 
R. Keith. Title only........0.000 Seeeweaovesne i 89 
on a method of developing magneti-m in 
bars of steel. J. Henry. Title only, 
i 97 
on the movement of a particle attracted 
towards a point. H. H. Bates. Ab- 
SUP CU tence stave cscs erccccweusedarcecnscenanayeachave ii 19 
a method of determining a definite inter- 
val of time, and its application to meas- 
uring the number of vibrations of solid 
bodies. A.M. Mayer. Title only......i1 64 
Crookes’ radiometers. J. Henry. ,Ab- 
Str ACT. ...000. Seca seareesucdl) OO 
forceand momentum. E.B. Elliott. Title 
OTUs cccasncosensasae Guvpsscesancscesescquscesdeudsacs ii 84 
a thermodynamic theory of the spectrum. 
S. Newcomb. Title only........... .-» Adi 41, 43 
vortex motion in ordinary fluids. T. 
CEAIS POPES CMRCEcccaveedcececectucverssaaeces tii 143 
curious fallacy as to the theory of gravita- 
tion. B. Alvord. Jn full....sccscccscevsees ve 85 
on physics and occult qualities. W. B. 
Taylor. Presidential address. In full, 
v 125, 126 
J. W. 
In full, 
vi xxvii, 110 
H. H. Bates. Ref- 
se ccareerecesesesresceeseses 
the three methods of evolution. 
Powell. Presidential address. 
the nature of matter. 
OT ENLCEs accsevacesucetssunossdtcacsssahes oacuveceveves wi 5 
substance, matter, motion, and force. M. 
H. Doolittle. Title only..........0.00seeeee vi 14 
the atomic philosophy, physical and meta- 
physical. J. C. Welling. Presidential 
address. In full....... Panta soe Wii XXix, 81 
music and the chemical elements. M. H. 
Doolittle. Abstract ....csc.s.ss00s00es Wid 26, 27 
review of the theoretical discussion in 
Prof. P. G. Tait’s ‘‘ Encyclopsedia Brit- 
annica” article on mechanics. 4H. 
Farquhar. <Abstract...........s000 ccorece WAR 29 
the physical basis of phenomena. H. H. 
Bates) av fist cac.coceaceuerccessensecesucevs vii 40 
a formula for the length of a seconds- 
pendulum. G.W. Hill. Reference..vii 101 
