Volume 106, Issue 24
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Features
Prof. Malladra' s Descent into the Crater of Vesuvius
Exploring the Interior of a Volcano Amid Choking Sulphur Fumes Illustrated With Photographs Prof. Alessandro Malladra
How the Germans Utilize Waste—V
Wealth that has been Earned by the Efficient Use of Raw Material
Industrial Uses of the Moving Picture
How and Why Moving Pictures Educate and Advertise
How we can Utilize $250,000,000 Worth of Wasted Timber
The Beginning of a New American Industry
An Industry that Thrives on the Utilization of Waste
What the By-products of the Packing House Mean to this Country
The Dividends That Float Up the Chimney
What Smoke Means in Dollars and Cents
The Enormous Fire Waste of the United States
How One Half a Billion Dollars are Lost Annually Because of Bad Construction