Value of Rare Earths for Electrical Purposes

Large Powder Chambers and Gun Erosion

Perhydrase Milk-A New Sterilized Milk

Climate: Past and Present

Recent Performances of the French Airship "Patrie"

By the Paris Correspondent of the Scientific American

The Yawning Cure for Throat Diseases

Facts about Black Lead Pencils

The Current Supplement

Recent Progress in Wireless Telephony

The Launch of the "Satsuma"

A Machine that Predicts Tides

Opening of Electric Service on the New York Central and the New Haven Railroads

Some Facts about Tea

Snow Shoes for Wagons

Patent Department

An Improved Self-Oiling Roller Bearing

Umbrella Frame with Detachable Ribs

A Handy Portable Crane and Hoist

An Improved Receiver for Telephones

Liquid Soap Holder