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Features

Improved Stump Extractor, The "Instrument Room" of the Electric Telegraph, of London, and more

Inaugural Address of the President, Thomas H. Huxley, LL.D., F.R.S., Etc., Before the British Association for the Advancement of Science

Costume and Art

New Capitol for the State of New York

Design Patents- October 8, 1870

How Railroads are Made

By Jacob Abbott

Improved Hand-Drilling Machine

History of Chloroform

The Gatling Battery Gun in England

Woodbury's Photo-Relief Process

Central Park. New York--Report of the Commissioners

Fair of the American Institute- October 15, 1870

Comparative Accuracy of Mercurial and Aneroid Barometers

What a Contrast

Letters from the South, Etc.

Recent American and Foreign Patents- October 15, 1870

Answers to Correspondents- October 15, 1870

Official List of Patents- October 15, 1870

Applications for the Extension of Patents- October 15, 1870

Departments

  • Letters

    Correspondence- October 15, 1870

  • Departments

    Business and Personal- October 15, 1870

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October 15, 1870

Beyond XX and XY

Biology. Identity. Equality.