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Departments

Correspondence

Correspondence pp68 - 69

doi:10.1038/scientificamerican07301870-68


Business and Personal

Business and Personal p74

doi:10.1038/scientificamerican07301870-74b


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Articles

Improved Engraving Machine pp63 - 64

doi:10.1038/scientificamerican07301870-63


Richard Trevithick Inventor of the Locomotive pp64 - 65

doi:10.1038/scientificamerican07301870-64


Of Thought without Language pp65 - 66

George S. Burleigh

doi:10.1038/scientificamerican07301870-65


Scientific Intelligence p66

doi:10.1038/scientificamerican07301870-66


The Hymenopters pp67 - 68

Edward C.H. Day

doi:10.1038/scientificamerican07301870-67


Experiments with Hydrate of Chloral p69

F. A. Howig, DR.

doi:10.1038/scientificamerican07301870-69


A New Dodge in Hair Dyes pp69 - 70

doi:10.1038/scientificamerican07301870-69a


Alexander's Safety-Cap for Molasses, Varnish, and Oil Cans p70

doi:10.1038/scientificamerican07301870-70


Duckham's Hydrostatic Weighing Machine p70

doi:10.1038/scientificamerican07301870-70a


Floato-Static Breakwater p70

doi:10.1038/scientificamerican07301870-70b


Bessemer Steel—American Improvements p71

doi:10.1038/scientificamerican07301870-71


New Mechanical Movements p71

doi:10.1038/scientificamerican07301870-71a


A New Bleaching Agent p71

doi:10.1038/scientificamerican07301870-71b


Can Mineral Matter be Assimilated in the Animal Economy? pp71 - 72

doi:10.1038/scientificamerican07301870-71c


Progress of Invention Abroad p72

doi:10.1038/scientificamerican07301870-72


Liebig's Extract of Meat p72

doi:10.1038/scientificamerican07301870-72a


Our Correspondence pp72 - 73

doi:10.1038/scientificamerican07301870-72b


How Inventors are Appreciated in Congress p73

doi:10.1038/scientificamerican07301870-73


Action of Sea Water on the Metallic Fastenings of Ships p73

doi:10.1038/scientificamerican07301870-73a


Public Parks and Floral Decorations pp73 - 74

doi:10.1038/scientificamerican07301870-73b


Rogers' Patent Price Current Books p74

doi:10.1038/scientificamerican07301870-74


Applications for the Extension of Patents p74

doi:10.1038/scientificamerican07301870-74a


Answers to Correspondents p74

doi:10.1038/scientificamerican07301870-74c


Recent American and Foreign Patents pp74 - 75

doi:10.1038/scientificamerican07301870-74d


Official List of Patents pp75 - 76

doi:10.1038/scientificamerican07301870-75


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