CONTENTS. 



PAGE 



The Small Water-Flea 68 



The Vaulter 69 



The Larva of a small Boat-Fly 



The Larva of a species of Water-Beetle. 70 



The Lurco, or Glutton 72 



Eels in Paste 73 



The Vinegar Eel 74 



CHAPTER IV. 



OF THE STRUCTURE OF WOOD AND 

 HERBS. 



Woody Portion. 76 



Arrangement 77 



Cellular Tissue 78 



Pith 79 



Wood and Woody Texture 79 



Bark 80 



The Mode of Growth in the Trunk and 



Branches of Trees 81 



SECTIONS OF WOOD 83 



Pear Tree 83 



The Hazel 83 



English Oak 83 



White Oak 84 



Elm.. 86 



English Walnut 86 



Ash Branch 86 



Maple 87 



Dogwood 87 



White Pine 88 



Mallaca 91 



Whitewood 92 



Sumach 92 



Wormwood 93 



Root of Wormwood 93 



FOSSIL WOODS AND PLANTS 94 



Coal 96 



CHAPTER V. 



CRYSTALLIZATIONS. 



Nitrate of Potash, or Saltpetre. 

 Flowerg of Benzoin. . . 



99 

 100 



PAGE 



Sulphate of Iron, or Copperas 101 



Camphor 101 



Sal Ammoniac, or Muriate of Ammonia. 1 02 



Muriate of Barytes 102 



Bichromate of Potassa 103 



Sulphate of Soda, or Glauber Salts. . . 104 



Verdigris 105 



Sulphate of Magnesia, or Epsom Salts. 105 



Sulphate of Copper 106 



Alum 107 



Salt, or Chloride of Sodium 107 



Snow 107 



ON CRYSTALS FOUND IN PLANTS. . . .109 



CHAPTER VI. 



PARTS OF INSECTS AND MISCELLANE- 

 OUS OBJECTS. 



Eyes 114 



Reticulated Eyes 115 



Wings 118 



Hemerobius Perla 120 



Feathers of Moths and Butterflies 120 



Eggs 1 23 



Hairs 123 



The Proboscis of the Ox-Fly 125 



The Sucker of the Gnat 125 



The Proboscis of the Bee 126 



Sting of the Wild Bee 128 



Feet 128 



Antennas 130 



Scales of Fishes 131 



The Internal Organs of Respiration of 



the Silk-Worm 134 



Magnified Flea 136 



A Mite Magnified 138 



Globules of Blood 138 



The Web of the Frog's Foot 140 



Pollen 141 



Indian Corn 142 



Fuchsia 143 



Sweet Pea 143 



FernSeed 143 



