132 A Philosophical Problem. Why Mountains are Colder than Valleys. To Restore The Hair. Velocities. A A New Plan for Preparing Bird Skins. A Tool Below the Centers. AO VIP Fence-makers Take Notice. Fruit Drier. The Way Tubes for Artist's Colors are Made. To Glue Manufacturers. A Mechanical Problem. scientific american, 1865-08-26

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132 A Philosophical Problem. Why Mountains are Colder than Valleys. To Restore The Hair. Velocities. A A New Plan for Preparing Bird Skins. A Tool Below the Centers. AO VIP Fence-makers Take Notice. Fruit Drier. The Way Tubes for Artist's Colors are Made. To Glue Manufacturers. A Mechanical Problem. scientific american, 1865-08-26

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