=How are Artificial Precious Stones Made? 361. What is a Mexican Bull-Fight Like? 363. What is the Difference between “Alternating” and “Direct” Current? 363. What was the “Court of Love”? 363.=
Birth of Mechanical Addressing, 364. The First Addressograph, 364. Greater Speed, 366. A Card Index that Addresses Itself, 367.
=What is Dry Farming? 372. What is a Drying Machine Like? 372. How does the New York Stock Exchange Operate? 374. How did the term “Cowboys” Originate? 374.=
=THE STORY IN A CHEMICAL FIRE EXTINGUISHER= =375=
Smothering Fire with a Gas Blanket, 375. The Soda and Acid Extinguisher, 376.
=How is Gold Leaf Made? 377. What is the Natural Color of Goldfish? 377. When was “Liquid Fire” first used in Warfare? 377. How did the Greyhound get his Name? 377. Why is It Called “Battery Park”? 379. How do we Know that the Earth is Round? 379. What were “Ducking Stools?” 379.=
Pictures are the Universal Language, 380. What a Halftone is, 380. Line Engravings, 381. Color Engraving, 382.
=Where are Milk-Pails Filled from Trees? 383. How did the Wearing of a Crown Originate? 384. Why do Lobsters change Color? 384. How do Fishes Swim? 384. Where do Pearls Come from? 385. What is Cork? 385.=
Origin of the Cannon, 386. Modern Cannon, 392. How Cannon are Now Made, 393. Built-Up and Wire-Wound Guns, 394. Feats of Modern Guns, 406.
=What is a Deep-Sea Diver’s Dress Like? 411. Why do We Smile when We are Pleased? 412. Why do Some of Us have Freckles? 412.=
=PICTORIAL STORY OF THE STEEL INDUSTRY= =413=
Mining Ore, 413. Open-Hearth Furnaces, 416. Blast Furnaces, 417. A 15,000 Ton Forge, 418. Oil-Tempering, 420. Bending Armor Plate, 422. Largest Steel Casting in the World, 424. Casting Steel, 431. Rolling Rails, 432.
=What do We Mean by “Deviation of the Compass?” 435.=
=THE STORY IN THE MAKING OF A PAIR OF SHOES= =436=
Shoemaking by Machine, 436. Cross-Section of a Shoe, 437. Lasting Machine, 440. Details of the Process, 442. Evolution of a Shoe, 447.
=What is Standard Gold? 448. What are Cyclones? 450. What Metals can be Drawn into Wire Best? 450. How are Cocoanuts Used to Help our Warships? 450. How did the Dollar Sign Originate? 450.=
=PICTORIAL STORY OF FIRE APPARATUS= =451=
Aerial Truck, 451. Motor Fire Engine, 451. Old-time Apparatus, 452. Chemical Engine, 455.