Volume 44, Issue 4
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Features
Ice Roads and Railways on Ice
Improvements in the Silvering of Mirrors
Pharaoh's Serpents--Are They Dangerous Toys?
Electric Light Good for the Eyes
Electric Illumination at Menlo Park
Should a Baby Be Fat?
The Tehuantepec Ship Railway
Machine for Riveting the Tubes of Galloway Boilers
Tobacco-Leaf Cutting Knife
Improved Bench-Plane
Improved Apparatus for Upward Percolation
Bottle Cock for Effervescing Liquids
Novel Steam Boiler
Mechanical Inventions - January 22, 1881
On Magic Mirrors
Miscellaneous Inventions
Improved Steam Fog Horn
New Radial Drill
Fresh-Water Medusæ
Natural History Notes
Curious Fact in Natural History
Engineering Inventions - January 22, 1881
Transactions of the American Society of Engineers
Decisions Relating to Patents
United States Circuit Court.....