Volume 15, Issue 10
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Features
A Week on Oil Creek
The Pen--Its Construction and Use
Manufacture of White Lead
The Manufacture of Lead Pencils
Salt--Its Uses and Production
“Well-Rotted Manure”
Chemical Notes
Miscellaneous Summary
New Publications
Special Notices
Becker's Metallic Roofing
Mechanical Nonsense
Breathing--out of Doors and in the House
The Inflammability of Petroleum
Patent Claims
Issued from the U. S. Patent Office