Volume 14, Issue 25
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Features
Utilization of Refuse Matter
Miscellaneous Summary
Bridge Building--The Bridge of the Hart Ford, Springfield and New Haven Railroad over the Connecticut
Nitro-Glycerin Again--How to Make it Safe
Jacob's Safety Gas Valve
Cipher Writing
Gleanings Form the Polytechnic Association
Jones's Bench Vise
Special Notices
New Publications
End of Volume XIV
Adoption of the Metric System
System a Means of Economy
Patent Claims
Issued from the U. S. Patent Office