Table of contents
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Motive Agents.—Hot Air—A Singular Coincidence - p185
doi:10.1038/scientificamerican02231856-185
Proposed Enlargement of the City Hall - p186
doi:10.1038/scientificamerican02231856-186a
Report of the Commissioner of Patents for the Year 1855 - p187
doi:10.1038/scientificamerican02231856-187
Captain Whitaker's Improvement in Propulsion - p188
doi:10.1038/scientificamerican02231856-188
Incrustations in Steam Boilers; and Hydraulics and Power of Water - p188
doi:10.1038/scientificamerican02231856-188d
The Patent Laws—Their Defects and Remedies— Highly Important Reforms Proposed - p189
doi:10.1038/scientificamerican02231856-189
To Amend the Several Acts now in Force in Relation to the Patent Office - p189
doi:10.1038/scientificamerican02231856-189a
Report of the Commissioner of Patents - p189
doi:10.1038/scientificamerican02231856-189b
The Cotton Culture of Europe, Africa, and America - p190
doi:10.1038/scientificamerican02231856-190a
