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Features

A New Attachment to Sewing Machines

Engine-Room Skylights

Workshops of Manchester England

By James G. Fletcher

Foreign Intelligence

Notes on New Discoveries and New Applications of Science

Recent Improvements in Marine Engineering

New Publications

Markets for the Month

To Turn an Elbow

To Preserve Iron Ships from Rust

Tubular Boilers

What to Send to the French Exhibition

Patent Claims

To Our Readers

New Rates of Advertising

Mechanics

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March 10, 1866

Beyond XX and XY

Biology. Identity. Equality.