346

71. Tail of a Comet directed from the Sun 363

72. Bredichin's Theory of Comets' Tails 366

73. Tails of the Comet of 1858 367

74. The Comet of 1744 368

75. The Path of the Fireball of November 6, 1869 375

76. The Orbit of a Shoal of Meteors 378

77. Radiant Point of Shooting Stars 381

78. The History of the Leonids 385

79. Section of the Chaco Meteorite 398

80. The Great Bear and Pole Star 410

81. The Great Bear and Cassiopeia 411

82. The Great Square of Pegasus 413

83. Perseus and its Neighbouring Stars 415

84. The Pleiades 416

85. Orion, Sirius, and Neighbouring Stars 417

86. Castor and Pollux 418

87. The Great Bear and the Lion 419

88. Booetes and the Crown 420

89. Virgo and Neighbouring Constellations 421

90. The Constellation of Lyra 422

91. Vega, the Swan, and the Eagle 423

92. The Orbit of Sirius 426

93. The Parallactic Ellipse 444

94. 61 Cygni and the Comparison Stars 447

95. Parallax in Declination of 61 Cygni 450

96. Globular Cluster in Hercules 463

97. Position of the Great Nebula in Orion 466

98. The Multiple Star th Orionis 467

99. The Nebula N.G.C. 1499 471

100. Star-Map, showing Precessional Movement 493

101. Illustration of the Motion of Precession 495

THE

STORY OF THE HEAVENS.

"The Story of the Heave