Table of contents
April 12, 1862, Volume 6 No 15 (New Series) pp225-240
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Manufacture of Puddled Wrought-Iron Direct from the Ore—A New Process - pp225 - 226
doi:10.1038/scientificamerican04121862-225a
Polytechnic Association of the American Institute - pp228 - 229
doi:10.1038/scientificamerican04121862-228
Chemical and Physical Modifications of the Atmosphere Consequent on Habitation - pp231 - 232
doi:10.1038/scientificamerican04121862-231
Neill's Combined Knife, Fork and Spoon for the Army - p232
doi:10.1038/scientificamerican04121862-232
What Can be done for Inventors—Advice Gratis and Advice for Pay - p233
doi:10.1038/scientificamerican04121862-233
A New Leaf Turned Over in the Polytechnic Association - p233
doi:10.1038/scientificamerican04121862-233b
The Reason Why the Artillery was not in the Battle of Newbern—Improvement in Signals Suggested - p233
doi:10.1038/scientificamerican04121862-233c
Recent Progress of the Photographic Art - p234
doi:10.1038/scientificamerican04121862-234
Dialysis Applied to the Arts—Silica in Tanning and Preserving Stone Buildings - pp234 - 235
doi:10.1038/scientificamerican04121862-234a
