INDEX TO VOLUMES I-X. 
Page. 
Todd, J. E., remarks on charcoal in the 
drift...... Manqantenarenelcasaeu tena aseecece aeneanas fv 122 
Toner, J. M, communication on a method 
of describing aud locating with ease 
the approximate positions of geo- 
graphical regions. Title only........ sooeek 97 
the burning of theatresand public halls. 
PEPOPEM CILGn seessentercssuces are Srecvewecestescxall GO 
amalformed dog. Wo abstract............ 41185 
earth vibrations at Niagara Falls. Ab- 
RAM a TG ietue ten ab eecstshinsaasnancncssnawdneneeceauae iv 186 
coins and medals. Abséract......... scrcnane Wi 2 
remarks on care of pamphlets............ viii 29 
Tonto Sandstone, Age Of ............c00 ducedsaseuuee i 109 
Topaz from Stoneham, Me..... we With 5 
Topographic map defined.............. eck) Tt 
types in the southeastern States......... ix 22 
Topography and geology of the Cross Tim- 
bers of Texas......... eohaeheusel sasaurunes assess > 
ANA StTUCTULC......000 ceeeee Subsosnene Sense enatuks > ae 
COANE. serccsseiscessss Baaeakasest! Saseseanthnenaancsse x 14 
Topophone.............. avdcaves maseonidanc samedects we Whit 12 
Tornado at Rochester, Minn..........0..ses00eWiil 
Torreya in Southern States and Japan......id 42 
Townley, &., cited on transmission of sound, 
: wv 42 
PUPATIS TG LO XELLOS casi scessonsqcosaececacesasse eokeeasgWAlh, (27 
Meridian........ CeAerECEELS Reativeeescastuesves verse will 55 
of Mercury....... eeaGhinanesucqsidesvcactovessecerceve ii 199 
Mercury, May, 1878..... lid 43 
WenS) 1874, .0. ot tecccsscvecens i 63, ii 31, 33, iw 168 
MS ites arccavcesarxccelescsarcactersuossncnce vi 21 
Trap of Orange Mt., N. J........ Rebs sa seseuative -viii 24 
Treasurer’s report.....v 176, 180, vi xii, vii xxiv, 
viii xxviii, ix xxx, x xxxiv 
Tremors detected by astronomical observa- 
TIGIS ssn ccesassee peteepenaae toxin snasanscnack basses iii 120 
Triangle, Formule for the area of.........wiil 37 
Problem concerning...........0+ Biaecteecerspre Rhy 700 
Trisection Of angles...........sscecceseesseeseses sesame 90 
Trouvelot, L., Drawings of nebule by........ pt eal 
Tucker, R., Solution of a geometrical prob- 
PGNEM UD Vraesctsuastenndvucentuaxacevscsnccestesneses iil 65 
Tupman, —, letter on solar eclipse. Com- 
municated by W. Harkness. No ab- 
Sill Cbreccssecrodseccnatessne Rearenusetsegucdassossacad A 56 
winin es |W. diy DAL) Ofsic..cceasresseedeoveesecee's v 102 
Tyndall, John, cited on photophonie experi- 
MENIS...inoces reecceo Sassebalehadtatas ass pedenen iv 152 
sound anomalies.......... dechcadesaceceoaccess -v 33, 41 
heat absorption by the air..............6 -v 94, 96 
Introduction of........ snore toneenn thc ret eer i 65 
letter on fog signals. Communicated by 
ereLenTy. TINO GOSE CCL. .2.-.ccccscesesacseesse i 91 
Uinta Mountains, Permian rocks of.........44 106 
Uniforniitarianianisss.i.sscsaveteactetecccccccecWiil 6 
United States, Centre of population of....... s£) 35 
Geographic centre Of............se000 acacecseee i 22 
Wrara.:.. <b. madendertera Gace pereesaer eccane w= Oe 
Uranometria Argentina....... iii 122 
Uranus, Satellites Of ......ssscssse-cocscsseseeeessel (30) 
Utah, Glacial epoch in................ bade sapitexcivshes i 84 
Permian formation of........ week Add 68, 105 
Ute languages...cccicisescccesses Rendesavesarees senses 28 
Vacant offices, Filling of.. .....41 84, 141 53, -v 112, 
vi 41, vii 36 
Valentin, cited on mineralogy....... “ceetneatas boa i 
Valleys; Classification: Of:....cc.n.cstesesccnsanseseee i 49 
Values at different times...... ra Seaesave Ai 87 
Relative, of gold, greenbacks, and silver, 
fi 52 
Van Sant, ——, communication on a method 
of lighting gas-jets by electricity. Wo 
COBEN DCbwccocecversveceaicdescess ee cveasvaceusen lla O03 
Variations of latitude 10 
Vauquelin, cited on mineralogy......... ..... -4i 78 
Velocity of earth tremors.......... elascoteces ee viii 28 
Carthquake WAVEeS......cc0secseeseceee ix 41, x 17, 28 
Venom of serpents........ Wesaduasucwoadsconararecnecs vi 38 
Ventilation of the House of Representatives, 
v 99 
Venus, Transit of, 1874.........1 63, 1131, 33, iw 168 
ASSZicchcesouns arouser) vacccesens ae sAcenNaldtenes sem apenas wi 21 
Verification of weather predictions........ vii 122, 
viii 8, x 83, 94 
Werteprss,|Cepnalic:sccaicc.ccsccsssuresoscccsnsecsnecers i 26 
Virginia, Fossil plants from..............s0eee00 ii (26) 
Apparatus for testing............cssecsseeeceeees iii 53 
Vital principle........... adaencen eeaurda seer 4 27, v 50, 102 
statistics of the tenth U.S. census ...... viii 4 
Vocabulary of an individual..............000 ii 28, (16) 
WOIt-MICHOI: ie sncsonseeccosvececccess ScebeEcco ee sactcce vill 26 
Volcanic dust in the Great Basin.......... vii 18 
LOGICS faves oe tensnnacscnnctuteceseUeectunsesvecpsteace vii 78 
problem, The............00. inesesecabasedasansencened vi 87 
BHM SLi cocvccasccostcasé socees sevens ctavecestectebeneos vii 33 
Voleano, Latest, in northern California.....4x 46 
Volcanoes of New MeXiCO........cesecsceseseeas -vii 76 
Von Cronstedt, cited on mineralogy...........4 78 
Von Jherling, Dr. H., cited on the Chito- ; 
THVCLEG.b cceue stpsatenvacsceosatnecatanwunrcuboctestrent ii 193 
Vortex motion............ a haaasuenedssccucaceseeesaeh fii 143 
Wiuleany Search fore. -ccet scccassecacuentsecetonceriacs li 85 
Wagner, cited on the sun’s diameter.........1 (4) 
Waite, Chief Justice M. R., letter announcing 
the death of Joseph Henry...............44 196 
