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Features

Evaporation

Physical Changes and Personal Identity

Chemical, Natural, and Physical Magic

America Helping England

Sawdust Timber

Cotton's Preserve Can

Phelps' Water Cooler

New Smut Machine

The Commissioner's Report

Annual Report

Patent Lobbying in Congress

Sources of Nitric Acid

Personal

Commissioner Holt's Decision

Removal

Departments

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    Notes and Queries

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February 26, 1859

Beyond XX and XY

Biology. Identity. Equality.