Table of contents
May 18, 1861, Volume 4 No 20 (New Series) pp305-320
About the coverNotes and Queries
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Top of pageArticles
American Machines and Implements for England - p313
doi:10.1038/scientificamerican05181861-313b
Determining Distances by Light, Angles, Sound and Walking - p314
doi:10.1038/scientificamerican05181861-314
Letter from our Washington House - pp316 - 317
doi:10.1038/scientificamerican05181861-316
