CONTENTS. ix 



CHAPTER XXX. ORGANIC CHEMISTRY. ,. AGE 



Radicals Acids Bases Neutrals 410 



CHAPTER XXXI. MINERALOGY AND CRYSTALLOGRAPHY. 

 The Minerals Characteristics Crystals and their Forms Descriptions of Minerals 424 



CHAPTER XXXII. NEW LOCOMOTIVE APPLIANCES. 

 The Kite The Aerophane Ice Yachts Sailing Trucks Water Velocipedes 448 



CHAPTER XXXIII. ASTRONOMY. 

 Introductory History of Astronomy Nomenclature 466 



CHAPTER XXXIV. ANGLES AND MEASUREMENT OF ANGLES. 

 The Quadrant Transit Instrument Clocks Stellar Time Solar Time "Mean 



Time" 474 



CHAPTER XXXV. THE SOLAR SYSTEM. 

 Gravitation The Planets Size and Measurement of the Planets Satellites Falling 



Stars Comets Aerolites 4$6 



CHAPTER XXXVI. THE SUN. 

 Motion of the Sun The Seasons Character of the Sun Sun-Spots Zodiacal Light 496 



CHAPTER XXXVII. THE EARTH. 

 Form of the Earth Motion of the Globe Rate and Manner of Progression Latitude 



and Longitude The Seasons 54 



CHAPTER XXXVIII. THE MOON. 

 What is it Like? Moon Superstitions Description of the Moon Phases Tides 



Eclipses 510 



CHAPTER XXXIX. THE STARS. 

 The Planets and Asteroids 521 



CHAPTER XL. THE FIXED STARS. 



Fixed Stars Magnitude of the Stars Constellations Descriptions of the Zodiacal 



Constellations Northern and Southern Star Groups Distance of Stars ... 535 



CHAPTER XLI. THE STARS (Continued'] . 



Double and Multiple Stars Coloured and Variable Stars Clusters, Groups, and 



Nebulae The Galaxy, or Milky Way How to Find out the Principal Stars ... 546 



CHAPTER XLII. -NEW ASTRONOMICAL APPLIANCES. 

 A Celestial Indicator Astronomical or Cosmographical Clock A Simple Globe A 



Solar Chronometer ... ... ... ... ... ... ... ... ... ... 557 



CHAPTER XLIIL PHYSICAL GEOGRAPHY AND GEOLOGY. 



Geography and Geology The Earth's Crust Origin of the Earth Denudation and 



Excavation by Water Rocks, Gravel, and Sand Classes of Rocks 564 



CHAPTER XLIV. GEOLOGY. 



Crust of the Earth Geological Systems Eozoic, Primary, Secondary, Tertiary, Pre- 



Historic Formations 5/3 



CHAPTER XLV. GEOLOGY (Continued}. 



The Mesozoic System The Triassic, Oolitic, and Cretaceous Formations The 



Eocene, Miocene, and Pliocene The Glacial Period Pre-Historic Man ... 584 



CHAPTER XLVI. PHYSICAL GEOGRAPHY. 



Igneous Rocks Land and Water Springs, Wells, and Geysers Snow and Ice 

 Their Effects.., .. 601 



