Table of contents
May 15, 1869, Volume 20 No 20 pp305-318
About the coverBusiness and Personal
Top of page
Top of pageArticles
Improvement in Machine for Thrashing and Winnowing - p305
doi:10.1038/scientificamerican05151869-305
How Engineering Difficulties are Overcome - pp305 - 306
doi:10.1038/scientificamerican05151869-305a
Explosive Compounds for Engineering Purposes - pp307 - 308
doi:10.1038/scientificamerican05151869-307
The Sale of Gas by Quality as Well as Quantity - p313
doi:10.1038/scientificamerican05151869-313a
Eating Considered as Not a Fine Art - pp313 - 314
doi:10.1038/scientificamerican05151869-313c
Manufacturing, Mining, and Railroad Items - p315
doi:10.1038/scientificamerican05151869-315a
Applications for the Extension of Patents - p316
doi:10.1038/scientificamerican05151869-316b
