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Condensing and Molding Mill for the Manufacture of Peat Fuel, The Physics of Absorption

Some Steps in Engineering Progress

Health and How to Keep It

Polytechnic Association of the American Institute

New Publications

Carvalho's Apparatus for Super-Heating Steam

Koch's Boring Tool

The Foot Lathe

Markets for the Month

Miscellaneous Summary

Doyle's Beefsteak Crusher

Livermore's Fishhook

Fowler & Morgan's Packing for Oil Wells

Gould's Mist Forge

One Thing About Heat

The Theoretical and Actual Power of a Pound of Coal

Probable Adoption by the Present Congress of the French System of Weights and Measures

Hours of Labor in English Factories

Report of the Internal Revenue Commission

Death of Dr. Nott

Patent Claims

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February 10, 1866

Beyond XX and XY

Biology. Identity. Equality.