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Improved Rotary Stone-Cutting Machine.—Fig. 1 - pp249 - 250
doi:10.1038/scientificamerican04241852-249d
Woodworth's and Parker's Renewal of Patents - p251
doi:10.1038/scientificamerican04241852-251a
The Municipal Telegraph—Who was the First Inventor - p251
doi:10.1038/scientificamerican04241852-251b
Russia Iron—Patents for Introducing Inventions - p253
doi:10.1038/scientificamerican04241852-253
No Extension of Patents—Reform the Patent Laws - p253
doi:10.1038/scientificamerican04241852-253a
Page's Electro-Magnetic Engine—A Misrepresentation - p253
doi:10.1038/scientificamerican04241852-253f
Atomic Number and Equivalent in Chemistry - p256
doi:10.1038/scientificamerican04241852-256f
Exploration of the Sources of the Red River - p256
doi:10.1038/scientificamerican04241852-256h
