A New and Beautiful Alloy of Metal. To Fix Drawings in Chalk and Crayons. useful Problems. Another Cholera Cure. Zinc Palls for Milk. To Destroy Cockroaches. ToEoll Potatoes. History of the Rotary Engine. HOOVER'S ROTARY ENGINE. To Correct Sourness in Milk Cream and Bread. Headache. INVENTOR'S ALMANAC For 1850. SCIENTIFIC AMERICAN! 500 MECHANICAL ENGRAVINGS! HE BEST Mechanical Paper, 1849-05-26
A New and Beautiful Alloy of Metal. To Fix Drawings in Chalk and Crayons. useful Problems. Another Cholera Cure. Zinc Palls for Milk. To Destroy Cockroaches. ToEoll Potatoes. History of the Rotary Engine. HOOVER'S ROTARY ENGINE. To Correct Sourness in Milk Cream and Bread. Headache. INVENTOR'S ALMANAC For 1850. SCIENTIFIC AMERICAN! 500 MECHANICAL ENGRAVINGS! HE BEST Mechanical Paper, 1849-05-26
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