Evolution in Shipbuilding—I
The Wonderful Progress of the Past Century
Volume 81, Issue 2095supp
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Features
Non-Porous Alloy Castings
Recent Studies of Pasteurized and Boiled Milk
Aerial Torpedoes
Old Devices That Have Been Revived During the Present War
The Spiders in Flowers
Hints on Judging Diamonds
A Chimney Periscope
School-Spread of Contagious Disease
A Source of Epidemics That is Neglected by Officials and Physicians
The Periscope of the Submarine
Some Noted Zoological Parks
The Zoological Gardens of Melbourne
Coke as a Boiler Fuel
The Chinese Calendar
Explosives
Interesting Facts Relating to Their History and Nature
The Early Days of the Railroad
Protecting Motors Against Dust
Temperature Inversions in Relation to Frost
Methods for Anticipating Critical Periods and Protecting Crops
Metallographic Description of Ancient Peruvian Bronzes
Studies That Throw Light on Methods of Manufacture