COTTON CHOPPER. PULS' COTTON CHOPPER. TELEPHONE TRANSMITTER. IMPROVED SUGAR MACHINERY. MERCURY BUBBLES. COILDINED HOOK AND BUCKLE. 1 ' BLOWING MERCURY BUBBLES—MERCURY, scientific american, 1886-12-25

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COTTON CHOPPER. PULS' COTTON CHOPPER. TELEPHONE TRANSMITTER. IMPROVED SUGAR MACHINERY. MERCURY BUBBLES. COILDINED HOOK AND BUCKLE. 1 ' BLOWING MERCURY BUBBLES—MERCURY, scientific american, 1886-12-25

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