Testimonial to the late Commissioner of Patents. Death of an Inventor. Reaping Machine Trials. Mowing Machines—Disputed Points. Big Spring Fair. Beautiful Lithographic Work. How to Increase the Speed of Steam Vessels. The Water of Albany. Exhibition of the Maryland Mechanic Institute., scientific american, 1855-07-28

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Testimonial to the late Commissioner of Patents. Death of an Inventor. Reaping Machine Trials. Mowing Machines—Disputed Points. Big Spring Fair. Beautiful Lithographic Work. How to Increase the Speed of Steam Vessels. The Water of Albany. Exhibition of the Maryland Mechanic Institute., scientific american, 1855-07-28

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