ILLUSTRATIONS
| The Zodiacal Light | [Frontispiece] | |
| Chart of the Northern Constellations | Opposite p. | [73] |
| Belt and Sword of Orion | ” | [121] |
| Nebula in the Constellation Cygnus | ” | [169] |
| Sun’s Surface and Sun Spot | ” | [217] |
| Portion of the Moon’s Disk | ” | [265] |
| Nine Views of the Hour-Glass Sea on Mars | ” | [313] |
| Twelve Views of Jupiter | ” | [361] |
| Three Views of Saturn | ” | [409] |