Features
Is the Ether Matter?
The Physical Forces are Modes of Ether Pressure
The Woodbury Patent
The Cultivation of Oysters
The Commissioner of Patents on the Patent Office Tea Set
The Morgan Hospital School, Dundee, Scotland
British Naval Guns
Portable Steam Winch
Improved Horse Detacher
Shade Attachment for Plows
Improved Grubbing Machine
The Great Well at Prospect Park, Brooklyn
Sir Samuel Baker's Expedition
Ocean Telegraphy
NUMBER I
The Constitution of the Sun
NUMBER III-CONCLUSION
Recent American and Foreign Patents - January 9, 1875
Communications Received - January 9, 1875
Canadian Patents - January 9, 1875
Departments
- Letters
Correspondence - January 9, 1875
- Departments
Business and Personal - January 9, 1875
Notes and Queries - January 9, 1875
Index of Inventions - January 9, 1875
