Belching Cauldrons of the Earth
Awe Inspiring to an Infinite Degree Are the Titanic Eruptions of Great Volcanoes
Features
From the Scrap-book of Science, January 1929
What is Life?
Fascinating Pseudo-cells Which Display the Non-Living Features of Protoplasm May be Made by the Amateur With a Few Chemicals
Where to Put It?
Few Realize How Many Factors Will Have to be Considered in Selecting Scientifically the Best Site for the New 200-Inch Telescope
Railroads Turn to the Highways
To Protect Revenues and Give Better Service, Steam Railroads Adopt Motor Buses
Robots for Salesmen
Big Business Lays the Foundation for the Age of Mechanical Distribution of Merchandise
Wood Gases for Motors
Gazogene, France's New Gas, Promises to Replace Gasoline As Fuel
Do the Records of Science Face Ruin?
The Wide-spread Use of Groundwood Pulp for Paper Has Endangered Many Records Which Should Be Preserved for Posterity
The Mystery of the Green Line
The Aurora Borealis Has Long Provided Science With One of Its Most Difficult Puzzles. This Problem is Now Giving Way Before Intensive Research
The Month in Medical Science, January 1929
A Review and Commentary on Progress in the Medical and Surgical Fields
Adventurous Archeology
Naval Adequacy--V
Personnel Is a Primary Element of Naval Strength. In This, the Final Article of This Discussion, the Author Points Out Our Need for More Men
Saving the Scraps
Cast-Iron Chips and Borings Briquetted For More Efficient Re-melting
Your Next Automobile
Few Mechanical Improvements But a Wide Variety of Body Designs and Colors Are Features for 1929
Wheels--III
Steering Wheel Linkages, Castor Settings of Wheels, and Reasons for Wheel Wobble Are Discussed In This Installment
Noise Exclusion
Sound Waves From Noisy Streets Deflected by New Ventilator Which Admits Silent, Fresh Air
Long Bridge Shortens Coastal Route
Niagara Should be Saved
To Preserve Scenic Beauty of the Falls, Simple Remedial Measures Are Recommended by Special Board
The Origin of Petroleum
Modern Scientists Incline Strongly Toward the Theory That Petroleum Is a Product of Once Living Matter
Departments
- Departments
Our Point of View, January 1929
Ice Cream Delivery Truck, Fender Repairer and More
A Pin at a Time, Rapid Staplers and More
Dress Envelope, Egg Kettle and More
A Pleasure-Car Snow-Plow, Cage Experiment Proves Borer Can be Controlled and more
Model Aircraft, Aviation in Central America
By-Product Process Has Almost Supplanted Beehive Coke Ovens, Methane as Successor to Present Manufactured Gas and more
Current Bulletin Briefs, January 1929
The Back Yard Astronomer, January 1929
The Heavens in January 1929
Ideas Are Not Patentable, Profits in Cinders and more
