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ILLUSTRATIONS IN VOLUME XVIII. COLORED PLATES Facing Page Shobe-Bibds 114 Signal Code, International 158 Snails, North American 272 Serpents, Foreign Venomous • 274 Spectrum 426 Spectrum 428 MAPS Siam 126 ■ South Carolina 366 South Dakota 372 Spain 382 Stars — Celestial Charts 502 Sweden . 740 Switzerland 758 ENGRAVINGS Seville 14 Shakespeare 40 Sharks, Great 54 Shasta, Mount 58 Sheep 64 Sheep, Wild, and Musk Ox 66 Shintoism 88 Ship 90 Ship, Armored 94 Shipbuilding 100 Silk . 166 Silkworm 170 Skeleton 212 Snakes, American Harmless ................. 274 Snow 280
