CONTENTS. XI 



Lesson. Page. 



69. Falling Stars, Water Spouts, and Northern Lights, 154 



70. Galvanism. Voltaic Battery, - - - 157 



71. Galvanism (continued.) Prof. Hare's New De- 



flagrator, - _ . ., 159 



72. Magnetism. Variation of the Needle, - •» 162 



73. Magnetical Experiments. Amusing Deceptions, 164 



74. Aerostation. Air Balloons. Parachute. Death 



ofRozier, _ _ _ - 166 



75. Natural History, — its Objects, - - - 169 



76. Mineralogy. Characters of Minerals, - - 172 



77. Classification of Minerals. The Diamond, - 174 



78. Gold, — its remarkable ductility, . ^ - 176 



79. Silver and Mercury. Plating with Silver. Quick- 



silver Mine, - - - - _ 178 



80. Copper and Lead. Brass. White Lead, - 180 



81. Iron and Tin. Importance of Iron. Use of Tin. 



Pewter, - - - - - 182 



82. Zinc, Manganese, and Antimony, their Uses, 183 



83. Study of Geology, — its objects and uses, - 185 



84. Geology. Stratification. Sacred History confirmed, 186 



85. Relative Situation of Rocks. Decomposition of 



Rocks, - - - ^ - 189 



86. Biographical Sketch of Linna}us, - - - 191 



87. Study of Botany, a Source of Mental Improve- 



ment, - . - _ - 194 



SS. Texture of Vegetables. Bark. Wood. Pith. Age 



of Trees, - - - - - 196 



89. Sap and Secretions, Flowing of the Sap. Sugar, 198 



90. Process of Vegetation, - - - 200 



91. Roots, Stems, Buds, and Leaves. Effect of Light 



upon Plants, ^ . - . 202 



92. Flower and Fruit, , - - - 205 



93. Classification of Vegetables,its Importance and Use, 207 



94. Flowers. Insects in Flowers, - - 210 



95. Animal Kingdom. Study of Zoology advanta-r 



geous to the Young, - ? •? - 212 



96. First Class of Animals (Mammalia,) Orders of, 213 



97. Birds,— their Division into Orders. Moulting, 217 



98. Reptiles and Fishes. Electrical Fishes, - 219 



99. Structure and Transformation of Insects, - 221 

 100. Orders of Insects. The Gossamer, - - 225 



