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Improvement in Wood-working Machinery, Grape Shot
Scientific Observations on the Supply and Outflow of the Northwestern Lakes--The Meter and Method of Using it--Results of the Observations
The Manufacture of Arms in Persia
A New Toy for Young and Old
The Lenox Top
The Indians--General Sherman's Official Report
Protection of Sheep from Dogs
Exhibition Exchange for Patentees
The Parsons Steel Lined Gun
Recent American and Foreign patents
Answers to Correspondents
Cheap Ice Houses--A Good Plan
A Gas Inimical to Animal Life
What an American has Done Abroad
Natural Gas--The Earth a Gasometer
Our Plans for 1869
The Social Science Congress in England
Reminiscences of Travel in Spain
The Engines of the Wampanoag
A Significant Fact
Patents and Claims
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December 09, 1868
Beyond XX and XY
Biology. Identity. Equality.