170 
Page. 
Social Science and Statistics, List of 
papers on—Cont’d. 
statistics of the Philosophical Society from 
its foundation. G. K. Gilbert. Ab- 
Stract. 00 PisTechantactusscpsess eossuerecthpeaesessseeLeO 
the progress of science as exemplified in 
the art of weighing and measuring. 
W. Harkness. In full.........0+ X XxXvii, 39 
association ratios. M. H. Doolittle. Ab- 
GUVUCUslcascstsvocuenceestace aac Reelaeuannarbnalisievinn x 8&3 
association ratios. M. H. Doolittle. Ab- 
GUITICE. nauavuccsedcustcnciacabassessunrdecanbeann ascents x 94 
Societies, American scientific... viii xxxiii 
ICTON ELGG cc ccssssnccssnacnpevcuiseup aveneveveanecasesekus i vi 
SUNG PYOLESROL BAIN satsctsaccesssssascnevacessce x 45 
SURLISHICS) Of casuscacseclcareestuscrecuses uapauvenabvecess x, 29 
OWS ANG SCWALC. avadversnescncsecen secon svcosesssrss iv 38 
OMA COLOUG siareccccoscactactsnscusscsceasde 131, 141 116, 121 
eclipse, Jan. 11, 1880.........ccc.csccscesescesceses fii 121 
Uri 20S TS ce cenesttocssersereee Ad 202, dif 116 
heat variations and climate.............s0+ vi 10 
parallax derived from transit of Venus, 
MEthOS.........sesa000s Shasusassateckaacestassetetes v 39 
Solid, liquid, and gas defined.............2eee000 v 136 
SOMOF ’s THEOTEM........seerccscereccrersscoese Sapecey ix 54 
Sondhauss, cited on refraction of sound....4i 57 
BOrehi SUA. cts ecerecekcncecncnseasssncscsrevectar iii 140 
OU liscenstatravechasacsccbasseasssnsnsedsvassessaccmascnsednsce v 103 
Sound, Abnormal phenomena Of......... seers ii 37 
and fog man irate ii 57, 60, (45), iw 135, wv 23, 39 
DC Aiccsssasevsarsasns Fhoosierenc es neencete Av 143, 183 
TUTE eecccnsesveneccunetetens taneuasamtocesececssas faced iv 143 
Determination of direction of. li 69, Vili 12 
TEOMT CWO SYTOUS: .cccsscescscecccencsnecdsnsese acne Ai 85 
Joseph Henry’s researches ON......s00..e0e di 344 
Refraction Of...........66 41 57, 167, (48), wv 35, 39, 44 
velocity and air temperature.............-00 vi 47 
waves and earthquake Waves...........0+ ix 42, 43 
(See also Acoustics.) 
Sounds accompanying and following meteor 
of December 24, 1873. 
South! Mountain fhUUtiiessavsasenca-nosxs-cn caensene 
ECO rececipauncsssesroccacsess ccvessy ates 
Resisting Medium in..........ccceccseserscsceees 
Temperature Of.......csscccssee eksahpowananevaeierate ii 73 
Space-directed lines......cssecsecseseeseeeeeeeeX 105, 106 
Sparrows, 10} ota) ha ee eae aes aah ae ah a x) 16 
Specific gravity method.............ccssccseccceee vi 26 
SPECULOPNOMO sucess yataadencarccccasavaxcressreas iv 143, 161 
Spectrum of Encke's COMEL......ccccessseeecceres i 34 
COLON A cr eeacaracencavaneussnencesseecaVarereneseonstst 4i1 117 - 
Speech, Visible iv 55, vi 60 
Speed of propagation of the Charleston 
earthquake...........+ neent oneonesany Monadaeeess Vl 15/20 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Page 
Spencer, Herbert, cited on ceremonies....4x 20 
growth Of crystals.d.........00sscccssseses vaaset ON 
MIOTION sschesmsssceued semandoanesnauatee 
NLOTVE CUITEDES, cioccersdcccces ecccpecnscnacusunseus vi 62 
THO WIG: sc vear csaseacasaeexs a aacapots «ee W 164, 166 
Spheres, Problem concerning capussnas LOT 
Spheroid, Distances on any............. Spied 
Spofford, A. R., communication on proposed 
reforms in spelling the English lan- 
Title only... ossus sunaadenceNeunncee ii 42 
.-Al 109,» 64, 103 
score) (22 
guage. 
Spontaneous generation......... 
Standard for MicrOMEtry......ccccseceeeees 
Standard time.......scccssesssenssnccess 
adopted by the society .............. seaman 
A system of......... Seasasteeeaerere panana 
Standards of declination...........ccceeee 
LENS UH iseseneasspoescecs speesecechack psopenssneetneeee Lee 
VEAL Oi vucenvctucarccouss cedseasdonwace Rercsitecto ili 78, 107 
Standing rules of the General Committee, a 
xvii, if vi, iit vi, 149, iv 11, v 11, vi xii, 
wii xii, viii xii, ix xii, x xii 
Standing rules of the Mathematical Section, 
vi 115, vii 85, vili 35, ix 51,x 81 
Standing rules of the Society..4 xvi, if iv, iff 
iv, 149, iw 7, 30, 38, v 7, vi ix, vil ix, 
viii ix, ix ix, x ix 
Star catalogue Sere at U. S. Naval Ob- 
SOLVALOLY: sc ccscctasss| ce acvecsoncsseaeduessutennnnnt i 74 
New..... mateeren aves vaeensave teas yesetpenaeneal ix 14 
Stars, Aenean Of ccccssee-sussacevuuspseecsrnanh Am mmrny 
TMB LES “OL. a cecseonssnssn crnecnetcnet serene veAX 15 
Station Crrors....0..seeeee ison Nenany ane esnoscce eekh 82 
Statistics. (See Social Science.) 
Steam as a disinfectant........eceeeee ccc cscassuekRn Oe 
Steiner, Prof. J., cited on Malfatti’s problem, 
fi (115 
on Feuerbach’s Circle....,....0+++++ sseeeee Wild 46 
Stellar photometry.......... agree oqueccce\ssnanseee wane 
Steno, cited on crystallography................+. 2 ey i 
Sternberg, Dr. G. M., Researches on Bacillus 
TUSIATIES seasncccnnseconccenecss ssoasevaeeenae sisause iv 39 
Stokes, Professor, cited on refraction of 
AOUNGs: sseccssncccssns nena desopenennee 41 58, (47), v 40 
Stone, Ormond, communication on the de- 
termination of the errors of a pro- 
visory catalogue of fundamental stars. 
TUGLE: OFU1Y aves sessntenenaseusdonsvaunden cane aeeakRtd i 62 
the correction of a comet’s orbit. Refer- 
OTIC .onceannscacéeanedeavasexsleeesaetenneeaaeaeenm Ah 22 
a problem in probabilities. Abstract....x 89 
the orbit of Hyperion. Abstract and ref- 
CLENCE, s.gaccocesnesreceseses an scisuookecaseneey asebece x 104 
Stoneham, Me., Topaz from.........sececseeeee wili 5 
Stoney, cited on the radiometer... ii 81 
Storage of electric CNETYY.....MWerereeeeerereeeW 46 
Storm centres, Movement of....... ecavagkesaachsnee meet 
