Howe, Elias, 218

Hybla, 136

Hydrogen, 114

Hymettus, 136

Ice, 15

Idria, quicksilver mines of, 97

India rubber, 107
or Chinese ink, 76

Indigo, 138

Ink, 74
used by the ancients, 75

Inlaying, 132

Insect, coral, 109-111

Ionians, 60

Iron, 82

Isinglass, 132

Islands, Volcanic, 155

Ivory, 135

Jaca tree, 87

Japanese, 181

Jetties of the Mississippi, 218

Jupiter, 148

Kaleidoscope, 210

Kiln, 73

Lace, 41

Lapis calaminaris, 84

Laudanum, 91

Laws, How made, 148

Lead, 121
black, 122

Leather, 72

Legislative Powers, 147

Lemon, 62

Lenses, 95

Leo the Tenth, 184

Lesseps, Ferd. de, 217

Levant, 75

Libanus, Mount, 90

Licorice, 89

Light, 207
Drummond, 207
Electric, 208, 211
Lime, 207
Magnesium, 208

Lightning, 17
Rod, 215

Lime, a fruit, 63

Lime, an earth, 73, 112
quick, 150

Linen, 32

Liquids, 197, 198

Lithography, 131

Loadstone, 95

Logwood, 139

Lombards, 170

Lucca, 64

Lucullus, 35

Lungs, 89

Lyre, 178

McCormick, Cyrus H., 218

Mace, 51

Magic, 99

Mahogany, 107

Malt, 137

Maltese orange, 62

Mangoes, 85

Manioc plant, 134

Manna, 89, 90

Marble, 116
Parian, 117

Mariners' compass, 95

Marine salt, 78

Marl, 101

Mathematics, 101

Mead, 136

Mechanics, 102

Mediterranean, 171

Megaphone, 206

Melons, 67

Mercury, 97
the god, 178

Metals, primitive, 83

Metallurgy, 123

Microphone, 205

Microscope, 102

Milan, 40

Millet, 50

Mineral oil, 65
tar, 140

Mines, 84
coal, 81

Mint, 166

Mirrors, 54, 55

Mohair, 46

Mahomed, 72

Money, 163

Morphia, 91

Mortar, 148

Morse, S.F.B., 213

Mosque, 72

Mother-of-pearl, 132

Mt. Cenis Tunnel, 216

Muscles, 21

Music, vocal, 176

Musical instruments, 174
boxes, 179

Musk, 141

Myrrh, 141

Nantes, Edict of, 45

Natron, 105

Nature, kingdom of, 197

Navigation, 166-174

Nabuchodonosor, 146

Needles, 57