Table of contents
March 28, 1891, Volume 64 No 13 pp191-206
About the coverBusiness and Personal
Index
Patent Notes
Top of page
Top of pageArticles
The Celebration of the Beginning of the Second Century of the American Patent System - pp192 - 193
doi:10.1038/scientificamerican03281891-192
Position of the Planets in April - pp193 - 194
doi:10.1038/scientificamerican03281891-193
A Fish Habitation - pp199 - 201
Wm. P. Seal, By
doi:10.1038/scientificamerican03281891-199
Experiment in Specific Gravity of Fluids - p201
doi:10.1038/scientificamerican03281891-201
Experimental Science - p205
Geo. M. Hopkins, By
doi:10.1038/scientificamerican03281891-205a
The Scientific American Publications for 1891 - p205
doi:10.1038/scientificamerican03281891-205b
The Scientific American Established I846 - p206
doi:10.1038/scientificamerican03281891-206