The Rock-removing Machinery of the Suez Canal, Largest Embankment in Germany and more

Soil Analysis and Seed Selection

A New Problem in Agriculture

Increasing the Food Supply of a Nation

How Intensive Farming is Practiced in Germany

Economies of the Farm Tractor

The New Way of Tilling the Soil and What it Means

X-ray Pictures of Micro-organisms

The Fourth Award of the Scientific American Medal

An Oxygen Fed and Driven Device for Artificial Respiration

Gasoline and Oil Power on the Farm

How Engines Have Lightened Farm Work

Success of the County Agriculturist Plan, The Green Tarnish on Lead Pipes

Coming Army Aeroplanes, Agriculture at Columbia University and more

Clarifying Beer by Gelatinous Silica, The Mississippi as a Conveyer of Material