Footnote 837:
_Sidereal Messenger_, vol. ix. p. 47.
Footnote 838:
_Astr. Nach._ No. 2918; _Astr. and Astrophysics_, vol. xiii. p. 178.
Footnote 839:
_Ibid._ p. 643.
Footnote 840:
Gore, _Knowledge_, vol. xxii. p. 201.
Footnote 841:
_Abhandl. der kön. Sächs. Ges._ Bd. xv. Th. i. 1889.
Footnote 842:
Reproduced in _Knowledge_, vol. xix. p. 109.
Footnote 843:
_Astr. and Astrophysics_, vol. xiii. p. 642.
Footnote 844:
_Astr. and Astrophysics_, vol. xiii. pp. 180, 182.
Footnote 845:
_Publ. Lick Observatory_, vol. iii. p. 202.
Footnote 846:
_Cape Results_, p. 115.
Footnote 847:
See _Knowledge_, vol. xxi. p. 279.
Footnote 848:
Bailey, _Astr. and Astrophysics_, vol. xii. p. 689.
Footnote 849:
Pickering, _Harvard Annals_, vol. xxvi. p. 218.
Footnote 850:
_Ibid._ p. 221.
Footnote 851:
_Ibid._ p. 220.
Footnote 852:
_Phil. Trans._ vol. cli. p. 732.
Footnote 853:
_Publ. Pacific Society_, vol. iii. p. 375.
Footnote 854:
_Ibid._ No. 70, p. 201.
Footnote 855:
_Astroph. Journ._ vol. x. p. 246.
Footnote 856:
_Astroph. Journ._ vol. xii. p. 181.
Footnote 857:
_Abhandl. der Kön. Preuss. Akad._ 1892, Anhang.
Footnote 858:
J. Herschel, _Cape Results_, pp. 23, 113, Plate vi. Fig. 14.
Footnote 859:
_Engl. Mechanic_, vol. li. p. 378; _Sidereal Messenger_, vols. ix. p. 380; x. p. 107.
Footnote 860:
_Monthly Notices_, vol. 1. p. 517.
Footnote 861:
_Astroph. Journ._ vol. ii. p. 321; _Harvard Annals_, vol. xxxviii., contains a complete discussion of these variables by Bailey.
Footnote 862:
_Address on Astronomical Photography_, p. 26; _Knowledge_, vol. xxi. p. 280 (Clerke).
Footnote 863:
_Harvard Circular_, No. 33.
Footnote 864:
_Astroph. Journ._ vol. x. p. 255.
Footnote 865:
_Publ. Pacific Society_, No. 70, p. 210.
Footnote 866:
_Astr. Nach._ No. 3519.
Footnote 867:
Parkhurst, _Astr. Journ._ No. 482.
Footnote 868:
_Trans. Royal Dublin Society_, vol. ii. p. 132.
Footnote 869:
Bélopolsky, _Astr. Nach._ No. 3338.
Footnote 870:
_Celestial Photographs_, vol. i. p. 119.
Footnote 871:
Secchi, _Atti dell’ Accad. Pont._ t. vii. p. 90, 1853.
Footnote 872:
_Harvard Circular_, No. 33.
Footnote 873:
_Harvard Annals_, vol. xxxviii. p. 234.
Footnote 874:
_Astroph. Journ._ vol. x. p. 263.
Footnote 875:
_Harvard Annals_, vol. xxvi. p. 247.
Footnote 876:
_General Astronomy_, section 891.
Footnote 877:
_Astr. Nach._ 3549; _Astroph. Journ._ vol. ix. p. 149.
Footnote 878:
_Atlas of Stellar Spectra_, p. 125.
Footnote 879:
_Celestial Photographs_, vol. ii. p. 63.
Footnote 880:
Scheiner, _Photographie der Gestirne_, p. 332.
Footnote 881:
This is denied by M. Antoniadi, on the strength of an observation with the giant siderostat of Paris, 1st Sept. 1900 (_Knowledge_, vol. xxiii. p. 251).
Footnote 882:
Swift, _Pop. Astr._ vol. i. p. 112.
Footnote 883:
Rabourdin, _Cosmos_, 19 Fevrier 1898, p. 232.
Footnote 884:
_Cape Results_, p. 53.
Footnote 885:
_Knowledge_, vol. xxiii. p. 132.
Footnote 886:
_Trans. Royal Dublin Society_, vol. ii. p. 79.
Footnote 887:
_Engl. Mechanic_, vol. xlii. p. 311.
Footnote 888:
_Celestial Photographs_, vol. i. p. 78.
Footnote 889:
_Astr. Nach._ No. 3601.
Footnote 890:
_Astroph. Journ._ vol. xi. p. 3.
Footnote 891:
_Astronomical and Physical Researches at Daramona_, Appended Illustrations.
Footnote 892:
_Astroph. Journ._ vol. xiv. p. 34.
Footnote 893:
_Trans. Royal Dublin Society_, vol. ii. p. 135.
Footnote 894:
_Trans. Royal Dublin Society_, vol. ii. p. 50.
Footnote 895:
_Observatory_, vol. xii. p. 84.
Footnote 896:
_Cape Results_, pp. 20, 94.
Footnote 897:
Rosse, _Trans. Royal Dublin Society_, vol. ii. p. 19.
Footnote 898:
_Ibid._ p. 57.
Footnote 899:
They seem to have been depicted two months earlier by Max Wolf. See _Astr. Nach._ Nos. 3214, 3217.
Footnote 900:
_Astr. and Astrophysics_, vol. xiii. p. 183.
Footnote 901:
_Celestial Photographs_, vol. ii. p. 159.
Footnote 902:
_Ibid._ vol. i. p. 41.
Footnote 903:
_Astroph. Journ._ vol. xi. p. 4.
Footnote 904:
_Celestial Photographs_, vol. ii. p. 135.
Footnote 905:
_Sitzungsberichte der kgl. bayer. Akad. der Wissenschaften_, Bd. xxxi. Heft ii. p. 111 (1901).
Footnote 906:
_Astr. and Astrophysics_, vol. xii. p. 300.
Footnote 907:
Published as an “Inaugural Dissertation” at Berlin in 1892.
Footnote 908:
_Astroph. Journ._ vol. xi. p. 347.
Footnote 909:
_Gen. Cat._ Nos. 3572, 3574; _Phil. Trans._ vol. cxxiii. p. 496.
Footnote 910:
_Monthly Notices_, vol. lii. p. 458.
Footnote 911:
_Monthly Notices_, vol. lii. p. 453.
Footnote 912:
_Sterngruppen und Nebelmassen_, p. 33.
Footnote 913:
_Phil. Trans._ vol. cxl. p. 512, plate xxxvii. fig. 6.
Footnote 914:
_Memoirs Royal Astr. Society_, vol. xxiii. p. 62.
Footnote 915:
_Monthly Notices_, vol. xlvii. p. 416.
Footnote 916:
_Copernicus_, vol. i. p. 50.
Footnote 917:
_Popular Astronomy_, vol. i. p. 370.
Footnote 918:
_Trans. Royal Dublin Society_, vol. ii. p. 97.
Footnote 919:
_Astr. Nach._ No. 3517.
Footnote 920:
_Monthly Notices_, vol. xlviii. p. 331.
Footnote 921:
_Celestial Photographs_, vol. i. p. 131.
Footnote 922:
_Astr. Nach._ No. 3168.
Footnote 923:
J. Herschel, _Phil. Trans._ vol. cxxiii. p. 403; Rosse, _Trans. Royal Dublin Soc._ vol. ii. p. 95; Spitaler, _Astr. Nach._ No. 3168.
Footnote 924:
See a photograph by Roberts, _Celestial Photographs_, vol. ii. p. 135.
Footnote 925:
_Lick Publications_, vol. iii. p. 204.
Footnote 926:
_Cape Results_, p. 20.
Footnote 927:
_Trans. Royal Dublin Society_, vol. ii. p. 118.
Footnote 928:
_Astr. Nach._ No. 3517.
Footnote 929:
J. Herschel, _Phil. Trans._ vol. cxxiii. p. 431.
Footnote 930:
_Ibid._ vol. cxl. p. 512.
Footnote 931:
J. Herschel, _Cape Results_, p. 22.
Footnote 932:
_Astr. Nach._ No. 2755.
Footnote 933:
Pickering, _Harvard Circular_, No. 12.
Footnote 934:
_Popular Astronomy_, vol. i. p. 370.
Footnote 935:
_Astr. Nach._ No. 3704.
Footnote 936:
_Sitzungsberichte_, Munich, 23rd March 1901, p. 111.
Footnote 937:
_Astr. Nach._ No. 3517.
Footnote 938:
_Phil. Trans._ vol. lxxxi. p. 71.
Footnote 939:
_Leipzig Abhandl._ Bd. iii. p. 314.
Footnote 940:
_Trans. Royal Dublin Society_, vol. ii. p. 40; _Phil. Trans._ vol. cli. p. 714.
Footnote 941:
_Lick Publications_, vol. ii. p. 161.
Footnote 942:
_Astr. Nach._ No. 3111.
Footnote 943:
Since the above words were written it has been applied. Professor Frost examined, in September 1902, a spectrograph of S.D. −10° 4713 taken by Mr. Ellerman in 1899, and finds it to bear authentic marks of the helium type.
Footnote 944:
_Sidereal Messenger_, vol. iv. p. 39.
Footnote 945:
_Astr. and Astrophysics_, vol. xiii. p. 177.
Footnote 946:
_Ibid._ p. 181.
Footnote 947:
_Astr. Nach._ No. 2683.
Footnote 948:
_Ibid._ No. 3111.
Footnote 949:
_Ibid._ No. 3101.
Footnote 950:
_Monthly Notices_, vol. lii. p. 442.
Footnote 951:
_Ibid._ p. 454.
Footnote 952:
_Publications of the Yerkes Observatory_, vol. i. p. 75.
Footnote 953:
_Knowledge_, vol. xvii. p. 17; _Astr. Journ._ No. 447.
Footnote 954:
_Publications of the Yerkes Observatory_, vol. i. p. 227.
Footnote 955:
_Celestial Cycle_, p. 152 (ed. 1881).
Footnote 956:
_Phil. Trans._ vol. cxxiii. p. 380.
Footnote 957:
_Ibid._ vol. cxl. p. 514, fig. 16; _Trans. Royal Dublin Society_, vol. ii. p. 50.
Footnote 958:
_Phil. Trans._ vol. cxci. p. 129.
Footnote 959:
W. H. Pickering, _Harvard Annals_, vol. xxxii. p. 66.
Footnote 960:
_Knowledge_, vol. xvii. p. 17.
Footnote 961:
_Astr. Nach._ No. 2707.
Footnote 962:
_Monthly Notices_, vol. xlix. p. 363.
Footnote 963:
Ingall, _ibid._ p. 420.
Footnote 964:
_Popular Astronomy_, Sept. 1897, pp. 229, 232.
Footnote 965:
_Phil. Trans._ vol. cliv. p. 442.
Footnote 966:
_Astr. Nach._ No. 1613.
Footnote 967:
_Monthly Notices_, vol. xlii. p. 446.
Footnote 968:
_Comptes Rendus_, t. xc. p. 837.
Footnote 969:
_Monthly Notices_, vol. xlii. p. 446.
Footnote 970:
_Publ. Lick Observatory_, vol. iii. p. 203.
Footnote 971:
Cf. J. H. Jeans, “On the Stability of a Spherical Nebula,” _Phil. Trans._ vol. cxcix. A, p. 1.
Footnote 972:
Ginzel, _Astr. Nach._ No. 2829.
Footnote 973:
_Lick Publications_, vol. iii. p. 209.
Footnote 974:
_System of the Stars_, p. 256, Fig. 35.
Footnote 975:
_Publ. Lick Observatory_, vol. iii. p. 212.
Footnote 976:
_Phil. Trans._ vol. xcii. p. 522.
Footnote 977:
_Trans. Royal Dublin Society_, vol. ii. p. 93.
Footnote 978:
_Celestial Photographs_, vol. ii. p. 127.
Footnote 979:
_Phil. Trans._ vol. cxxiii. p. 402.
Footnote 980:
_Ibid._ vol. cxl. plate xxxvii. fig. 11, p. 513.
Footnote 981:
_Phil. Trans._ vol. cli. p. 721.
Footnote 982:
_Publ. Lick Observatory_, vol. iii. p. 203.
Footnote 983:
_Monthly Notices_, vol. lvi. p. 379.
Footnote 984:
_Astr. Journ._ vol. ii. p. 141.
Footnote 985:
_Publ. Lick Observatory_, vol. ii. p. 159.
Footnote 986:
_Astr. Nach._ No. 3017; Burnham, _Monthly Notices_, vol. lii. pp. 33, 449.
Footnote 987:
_Ibid._ vol. xlviii. p. 388.
Footnote 988:
_Monthly Notices_, vol. lii. p. 40; _Publ. Lick Observatory_, vol. ii. p. 165.
Footnote 989:
_Ibid._ vol. iii. p. 217.
Footnote 990:
_Astr. Nach._ No. 1885.
Footnote 991:
_Publ. Lick Observatory_, vol. iii. pp. 212, 217 (Keeler).
Footnote 992:
This assertion must be qualified if Miss Cannon’s observation of the line λ 5007 in certain members of the Wolf-Rayet family be substantiated. _Harvard Annals_, vol. xxviii. p. 141.
Footnote 993:
Wilsing and Scheiner, _Astr. Nach._ No. 3805.
Footnote 994:
Campbell, _Astr. and Astrophysics_, vol. xiii. p. 494.
Footnote 995:
A formula connecting these three lines into a series has been published by Mr. E. F. J. Love (_Monthly Notices_ vol. lxii. p. 524), but their conformity to it may be purely accidental.
Footnote 996:
Ferry’s experiments at Upsala in 1898 went to show that C gains in relative strength with _diminishing_ pressure (_Physical Review_, vol. vii. p. 6).
Footnote 997:
Campbell, _Astr. and Astrophysics_, vol. xiii. p. 496.
Footnote 998:
_Publ. Lick Observatory_, vol. iii. p. 209.
Footnote 999:
_Astr. and Astrophysics_, vol. xiii. p. 495.
Footnote 1000:
_Ibid._ vol. xii. pp. 52, 55.
Footnote 1001:
_Astr. Nach._ Nos. 2292, 2293, 2309.
Footnote 1002:
_Publ. Lick Observatory_, vol. iii. p. 214.
Footnote 1003:
_Astr. and Astrophysics_, vol. xiii. p. 498.
Footnote 1004:
_Ibid._ vol. xii. p. 55.
Footnote 1005:
_Astr. Nach._ No. 2353; _Copernicus_, vol. i. p. 2.
Footnote 1006:
_Monthly Notices_, vol. xxxiv. p. 71.
Footnote 1007:
Keeler, _Publ. Lick Observatory_, vol. iii. p. 214.
Footnote 1008:
_Monthly Notices_, vol. lii. pp. 45, 46.
Footnote 1009:
_Memoirs Royal Astr. Society_, vol. xxiii. p. 61.
Footnote 1010:
_Monthly Notices_, vol. lii. p. 31.
Footnote 1011:
_Publ. Lick Observatory_, vol. iii. p. 211.
Footnote 1012:
_Astr. and Astrophysics_, vol. xii. p. 52.
Footnote 1013:
_Observatory_, vol. v. p. 26.
Footnote 1014:
D’Arrest, _Leipzig Abhandl._ Bd. iii. p. 308, 1857.
Footnote 1015:
Wilsing, _Astr. Nach._ Nos. 3190, 3261.
Footnote 1016:
Kleiber, _Astr. Nach._ No. 3037.
Footnote 1017:
_Astroph. Journ._ vol. x. p. 197.
Footnote 1018:
_Astr. Jahrbuch_, 1788, p. 242; _Phil. Trans._ vol. lxxv. p. 263.
Footnote 1019:
_Monthly Notices_, vol. xxxvi. p. 66.
Footnote 1020:
_Ibid._ vol. xlviii. p. 387.
Footnote 1021:
_Phil. Trans._ vol. cxxxiv. plate xix. fig. 29.
Footnote 1022:
_Nature_, vol. xliii. p. 420.
Footnote 1023:
_Astr. Jahrbuch_, 1803, p. 106.
Footnote 1024:
_Trans. Royal Dublin Society_, vol. ii. p. 152.
Footnote 1025:
_Astr. Nach._ No. 1018.
Footnote 1026:
_Nova Acta Societatis R. Upsaliensis_, ser. iii. vol. ix. p. 99, 1874.
Footnote 1027:
_Astr. Nach._ No. 2186.
Footnote 1028:
_Astr. Journ._ No. 200.
Footnote 1029:
_Potsdam Publ._ No. 14, p. 35.
Footnote 1030:
_Astr. Nach._ No. 2800.
Footnote 1031:
_Astroph. Journ._ vol. x. p. 199.
Footnote 1032:
_Astr. Nach._ No. 3200.
Footnote 1033:
_Monthly Notices_, vol. lx. p. 245.
Footnote 1034:
_Ibid._ p. 257.
Footnote 1035:
_Astr. and Astrophysics_, vol. xii. pp. 52, 55.
Footnote 1036:
_Ibid._ vol. xiii. p. 497.
Footnote 1037:
_Trans. Royal Dublin Society_, vol. ii. p. 156.
Footnote 1038:
_Monthly Notices_, vol. lii. p. 44.
Footnote 1039:
_Celestial Photographs_, vol. ii. p. 133.
Footnote 1040:
_Publ. Pacific Society_, vol. xi. p. 180.
Footnote 1041:
_Knowledge_, vol. xxiii. p. 250.
Footnote 1042:
_Memoirs Royal Astr. Society_, vol. xxxvi. p. 47.
Footnote 1043:
_Monthly Notices_, vol. lii. p. 38.
Footnote 1044:
_Cape Results_, p. 114.
Footnote 1045:
Swift, _Pop. Ast._ December 1897, p. 426.
Footnote 1046:
_Phil. Trans._ vols. cxl. p. 513; cli. p. 716.
Footnote 1047:
_Memoirs Royal Astr. Society_, vol. xxiii. p. 60.
Footnote 1048:
_Celestial Photographs_, vol. ii. p. 35.
Footnote 1049:
_Cape Results_, p. 90, plate vi. fig. 7.
Footnote 1050:
_Potsdam Publ._ No. 14, p. 37.
Footnote 1051:
_Phil. Trans._ vol. cli. plate xxx. fig. 40.
Footnote 1052:
_Monthly Notices_, vol. lii. p. 46.
Footnote 1053:
_Publ. Lick Observatory_, vol. iii. p. 215.
Footnote 1054:
_Astr. and Astrophysics_, vol. xiii. p. 499.
Footnote 1055:
_English Mechanic_, vol. xlii. p. 311.
Footnote 1056:
_Harvard Annals_, vol. xxxiii. p. 146.
Footnote 1057:
_Publ. Pacific Society_, No. 70, p. 201, 1899.
Footnote 1058:
Scheiner, _Astr. Nach._ No. 3086; Wilsing, _ibid._ No. 3261.
Footnote 1059:
_Monthly Notices_, vol. xlviii. p. 393.
Footnote 1060:
_Knowledge_, vol. xv. p. 149.
Footnote 1061:
_Potsdam Publ._ No. 14, p. 38.
Footnote 1062:
_Publ. Lick Observatory_, vol. iii. p. 213; _Astroph. Journ._ vol. x. p. 195.
Footnote 1063:
_Astr. Nach._ No. 3086.
Footnote 1064:
_Phil. Trans._ vol. cxl. p. 514, fig. 15.
Footnote 1065:
_Abhandl. Leipziger Akad._ Bd. iii. p. 321; _Astr. Nach._ No. 1885.
Footnote 1066:
_Memoirs Royal Astr. Society_, vol. xxiii. p. 61.
Footnote 1067:
_Les Étoiles_, t. ii. p. 16.
Footnote 1068:
_Monthly Notices_, vol. xxviii. p. 154.
Footnote 1069:
_Ibid._ vol. lii. p. 35.
Footnote 1070:
_Ibid._ vol. lx. p. 256.
Footnote 1071:
Comas Solà, _Astr. Nach._ No. 3751.
Footnote 1072:
_Knowledge_, vol. xii. p. 147.
Footnote 1073:
_Ibid._ vol. xx. p. 193.
Footnote 1074:
_Astr. Nach._ No. 3027.
Footnote 1075:
_Harvard Annals_, vol. xxxii. p. 66.
Footnote 1076:
_Astr. and Astrophysics_, vol. xiii. p. 813.
Footnote 1077:
_Harvard Annals_, vol. xxxii. p. 77.
Footnote 1078:
_Astr. Nach._ No. 3513.
Footnote 1079:
_Jahrbuch der Erfindungen_, 1898, p. 101; _Potsdam Publ._ Bd. xi.
Footnote 1080:
_Harvard Annals_, vol. xxxii. p. 80.
Footnote 1081:
Vogel, _Sitzungsberichte_, Berlin, 13 März 1902.
Footnote 1082:
_Astroph. Journ._ vol. x. p. 29.
Footnote 1083:
_Astr. Nach._ No. 3476.
Footnote 1084:
_Publ. Lick Observatory_, vol. iii. p. 224.
Footnote 1085:
_Astroph. Journ._ vol. ix. p. 312.
Footnote 1086:
_Astroph. Journ._ vol. viii. p. 32; _Astr. Nach._ No. 3471.
Footnote 1087:
_Astroph. Journ._ vol. ix. p. 133.
Footnote 1088:
_Ibid._ p. 140.
Footnote 1089:
_Publ. Pacific Society_, vol. v. p. 207.
Footnote 1090:
_Astr. Nach._ No. 3476.
Footnote 1091:
_Proc. Royal Society_, vol. lviii. p. 255.
Footnote 1092:
_Proc. Royal Society_, vol. xlvi. p. 41.
Footnote 1093:
_Astr. and Astrophysics_, vol. xiii. p. 478.
Footnote 1094:
_Washington Observations_, 1878, App. i.
Footnote 1095:
_Publ. Leander M‘Cormick Observatory_, vol. i. pt. vii. p. 274.
Footnote 1096:
_Mémoires de l’Acad. de St. Pétersbourg_, t. v. No. 4, p. 115.
Footnote 1097:
_Publ. Leander M‘Cormick Observatory_, vol. i. p. 333.
Footnote 1098:
_Knowledge_, vol. xvii. p. 133.
Footnote 1099:
Copied in _Knowledge_, vol. xvi. p. 69.
Footnote 1100:
_Phil. Trans._ 1786, p. 494; 1789, p. 247; 1811, p. 289; quoted by Holden, _American Journ. of Science_, vol. xiv. p. 434, 1877.
Footnote 1101:
_Memoirs Royal Astr. Society_, vol. iii. p. 63.
Footnote 1102:
Reproduced in _Astroph. Journ._ vol. xi. p. 325.
Footnote 1103:
_Popular Astronomy_, vol. i. p. 251.
Footnote 1104:
_Publ. Lick Observatory_, vol. iii. p. 205.
Footnote 1105:
_Astroph. Journ._ vol. ii. p. 162.
Footnote 1106:
_Phil. Trans._ vol. cxxiii. p. 461.
Footnote 1107:
_Cape Results_, p. 10.
Footnote 1108:
_Sidereal Messenger_, vol. iv. p. 38.
Footnote 1109:
_Celestial Photographs_, vol. i. p. 101.
Footnote 1110:
_Amer. Journ. of Science_, vol. xi. p. 341, third series.
Footnote 1111:
_Monthly Notices_, vol. xlvii. p. 420.
Footnote 1112:
_Forty-Seventh Annual Report._
Footnote 1113:
_Harvard Annals_, vol. xxvi. p. 206.
Footnote 1114:
_Astroph. Journ._ vol. ii. p. 350.
Footnote 1115:
_Astr. Nach._ No. 3082.
Footnote 1116:
_Ibid._ No. 3157.
Footnote 1117:
_Ibid._ No. 3301; _Knowledge_, vol. xix. p. 205.
Footnote 1118:
_Knowledge_, vol. xvii. p. 17.
Footnote 1119:
_Ibid._ vol. xiv. pp. 188, 230; _Observatory_, vol. xiv. p. 301; _Astr. Nach._ No. 3048.
Footnote 1120:
_Knowledge_, vol. xxii. p. 132.
Footnote 1121:
_Astr. and Astrophysics_, vol. xi. p. 528; Wolf, _Astr. Nach._ No. 3130.
Footnote 1122:
_Celestial Photographs_, vol. i. p. 113.
Footnote 1123:
_Astr. Nach._ No. 3738.
Footnote 1124:
_Cape Results_, p. 20.
Footnote 1125:
_Ibid._ p. 24.
Footnote 1126:
_Conn. des Temps pour 1784_, p. 229.
Footnote 1127:
Smyth, _Celestial Cycle_, p. 145 (ed. 1881).
Footnote 1128:
_Phil. Trans._ vols. cxxxiv. p. 322, cli. p. 715; _Trans. Royal Dublin Soc._ vol. ii. p. 47.
Footnote 1129:
_Celestial Photographs_, vol. i. p. 52.
Footnote 1130:
_Harvard Annals_, vol. xiii. pp. 64, 66.
Footnote 1131:
_Phil. Trans._ vol. cli. p. 713, plate xxv. fig. 6.
Footnote 1132:
_Comptes Rendus_, t. cxxvi. p. 1191.
Footnote 1133:
_Phil. Trans._ vol. cli. p. 713; _Trans. Royal Dublin Society_, vol. ii. p. 32.
Footnote 1134:
Webb, _Celestial Objects_, vol. ii. p. 188 (5th edition).
Footnote 1135:
_Trans. Royal Dublin Society_, vol. ii. p. 51.
Footnote 1136:
_Knowledge_, vol. xviii. p. 253.
Footnote 1137:
Smyth, _Celestial Cycle_, p. 361.
Footnote 1138:
_Harvard Annals_, vol. xxxiii. p. 144.
Footnote 1139:
J. Herschel, _Phil. Trans._ vol. cxxiii. p. 434; Rosse, _Trans. Royal Dublin Society_, vol. ii. p. 122.
Footnote 1140:
_Celestial Photographs_, vol. i. p. 81.
Footnote 1141:
Smyth, _Celestial Cycle_, p. 472; Webb, _Celestial Objects_, vol. ii. p. 137.
Footnote 1142:
_Phil. Trans._ vol. clvi. p. 390; _Harvard Annals_, vol. xxxiii. p. 144.
Footnote 1143:
_Trans. Royal Dublin Society_, vol. ii. p. 150.
Footnote 1144:
_Ibid._ p. 123.
Footnote 1145:
_Celestial Photographs_, vol. ii. p. 129.
Footnote 1146:
_Sidereal Messenger_, vol. iv. p. 4.
Footnote 1147:
Dreyer, _Memoirs Royal Astr. Society_, vol. xlix. p. 215.
Footnote 1148:
_Monthly Notices_, vol. lii. p. 455.
Footnote 1149:
_Astr. Nach._ No. 1391.
Footnote 1150:
_Ibid._ No. 1366.
Footnote 1151:
_Lick Publications_, vol. ii. p. 176.
Footnote 1152:
_Monthly Notices_, vol. lvi. p. 66.
Footnote 1153:
_Monthly Notices_, vol. lix. p. 372.
Footnote 1154:
_Ibid._ vol. lx. p. 424.
Footnote 1155:
_Astr. Nach._ No. 1689; Barnard, _Monthly Notices_, vol. lv. p. 442.
Footnote 1156:
_Monthly Notices_, vol. l. p. 440.
Footnote 1157:
_Astr. Nach._ No. 2212.
Footnote 1158:
_Monthly Notices_, vol. lv. p. 451.
Footnote 1159:
Quoted by Bigourdan, _Comptes Rendus_, t. cxii. p. 471.
Footnote 1160:
_Astr. Nach._ Nos. 3030, 3167, 3168.
Footnote 1161:
_Publications of the Lick Observatory_, vol. ii. p. 172.
Footnote 1162:
_Astr. Nach._ No. 3097; _Monthly Notices_, vol. lv. p. 452.
Footnote 1163:
_Astr. Nach._ No. 3097.
Footnote 1164:
_Observatory_, vol. xv. p. 104.
Footnote 1165:
Denning, _Astr. Nach._ No. 3111.
Footnote 1166:
_Astr. and Astrophysics_, vol. xi. p. 566.
Footnote 1167:
_Monthly Notices_, vol. xxxviii. p. 104; _Astr. Nach._ No. 2293; _V. J. S. Astr. Ges._ Jahrgang xiv. p. 167.
Footnote 1168:
_Publ. Lick Observatory_, vol. ii. p. 172.
Footnote 1169:
_Memoirs Royal Astr. Society_, vol. xlix. p. 213.
Footnote 1170:
_Publ. Lick Observatory_, vol. ii. p. 176.
Footnote 1171:
Ranyard, _Knowledge_, vol. xv. p. 132.
Footnote 1172:
_Knowledge_, vol. xv. p. 191.
Footnote 1173:
_Phil. Trans._ vol. clviii. p. 72.
Footnote 1174:
_Knowledge_, vol. xix. p. 39.
Footnote 1175:
Clerk Maxwell, _Theory of Heat_, 10th ed. p. 245.
Footnote 1176:
_Cardiff Address_, p. 21.
Footnote 1177:
E. S. Ferry, _Physical Review_, vol. vii. p. 6; Lewis, _Astroph. Journ._ vol. x. p. 141.
Footnote 1178:
Maunder, _Knowledge_, vol. xix. p. 286.
Footnote 1179:
Barnard, _Monthly Notices_, vol. l. p. 310.
Footnote 1180:
_Ibid._ p. 314; _Astr. and Astrophysics_, vol. xiii. p. 179.
Footnote 1181:
_Astroph. Journ._, vol. ix. p. 157.
Footnote 1182:
Ranyard, _Knowledge_, vol. xiv. p. 112.
Footnote 1183:
Barnard, _Report Harvard Conference_, Aug. 1898, p. 19.
Footnote 1184:
Burns, _Knowledge_, vol. xxii. p. 227.
Footnote 1185:
_Ibid._ vol. xix. p. 205.
Footnote 1186:
_Annals of Cape Observatory_, vol. iii. p. 22 (Introduction).
Footnote 1187:
_Knowledge_, vol. xiv. p. 51.
BY THE SAME AUTHOR
A HISTORY OF ASTRONOMY DURING THE NINETEENTH CENTURY
_Fourth Edition, Revised and Enlarged._ _Demy 8vo. Cloth, containing 7 page illustrations. Price 15s. net._
“A very interesting and valuable book. The book, which is a history and not a treatise, has been entirely revised and brought down to date. It contains several plates.”—_Westminster Gazette._
“Her book is, in short, for all popular purposes, exhaustive, and will do much to direct into the right paths the reviving interest in astronomy, which is one of the most curious intellectual revolutions of late years.”—_Daily Chronicle._
... “A book whose charm of style is only equalled by its evidence of erudition and the value of its contents....”—_The Observatory._
“Miss Clerke’s absorbingly interesting book.”—_The Outlook._
AGENTS IN AMERICA THE MACMILLAN COMPANY 66 FIFTH AVENUE, NEW YORK
TRANSCRIBER’S NOTES
● Fixed typos; non-standard spelling and dialect retained. ● Renumbered footnotes and moved them all to the end of the final chapter. ● Enclosed italics font in _underscores_. ● The caret (^) is used to indicate superscript, whether applied to a single character (as in 2^d) or to an entire expression (as in 1^{st}). ● Subscripts are shown using an underscore (_) with curly braces { }, as in H_{2}O.