Table of contents
April 30, 1870, Volume 22 No 18 pp279-292
About the coverBusiness and Personal
Books
Top of page
Top of pageArticles
Improved Stall Floor for Horses, To Prevent Decay of Shingles, and more - p279
doi:10.1038/scientificamerican04301870-279
Light and Vision—More Especially How Light Is Converted Into Thought - pp280 - 281
H. Knapp, M. D.
doi:10.1038/scientificamerican04301870-280
Dugdale's Universal Clothes Washer - pp282 - 284
doi:10.1038/scientificamerican04301870-282
Safety vs. Economy in the Construction of Steam Boilers - p287
doi:10.1038/scientificamerican04301870-287
The Increased Use of Cold-Rolled Shafting - p288
doi:10.1038/scientificamerican04301870-288
Morin's Experiments upon the Punching of Metals - p288
doi:10.1038/scientificamerican04301870-288b
The Great Union Depot on Fourth Avenue, New York - pp288 - 289
doi:10.1038/scientificamerican04301870-288c
Bill to Amend the Patent Laws Now Pending before Congress - p289
doi:10.1038/scientificamerican04301870-289
Instrument for Measuring the Deflection of Girders - pp289 - 290
doi:10.1038/scientificamerican04301870-289b
Recent American and Foreign Patents - pp290 - 291
doi:10.1038/scientificamerican04301870-290c
