THE MOON. 



Popular Interest attached to the Moon. Its Distance. Its Rotation. Same Face always tow ard 

 the Earth. Its Phases Its changes of Position with regard to the Sun. Has it an Atmoxphcre ? 

 Optical Test to determine it. Physical dualities of Moonlight. Is Moonlight Warm or Cold ? 

 Does Water exist on the Moon ? Does the Moon influence the Weather? Mode of determining 

 this. Physical condition of the Lunar Surface. Absence of Air and Gases. A bsencc of Liquids. 

 Appearance of the Earth as seen from the Moon. Prevalence of Mountains upon it. Their gen- 

 eral Volcanic Character. Appearance of the Mountain Tycho. Heights of Lunar Mountains aud 

 Depths of Ravines. Telescopic Views of the Moon by Beer and Madler. Detached Views of 

 the Lunar Surface. Condition of a Lunar Crater deducud from Analogy. 



