Scientific American Magazine

Provide Reservations, Stop Useless Swamp Drainage, Game Conservation Has Wide-Spread Effects, Value to Communities and Individuals

Record Flights Point the Way to Scheduled Operation, Prove Correctness of Designs, Test Equipment, Provide an Index of Performance

Only 300 Species Out of 500,000 Are Man's Enemies, No Insects--No Silk Stockings, No Fruit, Even the Hated Housefly Now Useful

Resists Temperature Changes, Can Be Twisted or Bent, Stronger Than Ordinary Glass, Clear or Colored

Caissons Constructed Upside Down on Ways, Launched, Built Up, Turned Over, Sunk in Clay, Workmen Inside Excavate Water Bed

Once Believed to Be Light of Extremely High Frequency, Cosmic Rays Are Now Thought to be Mainly, or Largely, Charged Particles, But the Final Answer Still Remains a Mystery

Scientific Materials, For Insulation, Durability, Permanence, Easier Application, Slow Growth Explained, What The Future Holds

When Hard Times Come It Is the Logical Time to Increase, Not Cut, the Funds for Research, Research Millions Are the Seeds of Billions

Used by Cellini and Before, Finest Work Possible, How It Is Done