=THE STORY IN FIRECRACKERS AND SKY-ROCKETS= =150=
The Need for Noisemakers, 150. Chinese Firecrackers, 150. Popular ever since the Invention of Gunpowder, 154. Beautiful Displays, 158.
=What makes a Chimney Smoke? 158. What are Dry Docks Like? 161. Why does a Lightning Bug Light Her Light? 161.=
=THE STORY IN THE MAKING OF A PICTURE= =162=
The Image is Upsidedown, 162. Effect of Light on the Film, 163. Early Photographic Efforts, 164. Modern Photography, 168.
=How Deep is the Deepest Part of the Ocean? 169. Why do We say “Get the Sack”? 169. Why do We call them X-Rays? 169. How did the Term “Yankee” Originate? 171. Why do We say “Kick the Bucket”? 171. When does a Tortoise move Quickly? 171.=
Gutenberg’s Press in 1450, 172. Cylinder Presses, 173. Curved Plates, 175. Printing, Folding and Counting 216,000 Papers an Hour, 175. Color Printing, 180.
=What do We Mean by the “Flying Dutchman”? 180. Why does a Duck’s Back Shed Water? 180. Why doesn’t the Sky ever Fall Down? 180. How are Sand-Dunes Formed? 180. What do We Mean by an Eclipse? 181. What are Dreams? 182. What makes Our Teeth Chatter? 182.=
Sixty Thousand Bees in a Hive, 183. Modern Bee-Keeping, 187. Profitable Anywhere, 193.
=Where do Figs Come from? 199. What are Fighting Fish? 199. How is the Exact Color of the Sky Determined? 199. What is a Divining Rod? 199.=
=THE STORY OF ELECTRICITY IN THE HOME= =200=
A Modern Aladdin’s Lamp, 200. Electric Hot Irons the First Appliances, 201. How They are Made, 202. Electric Cooking Appliances, 205. Electric Toaster, 206. Electric Coffee Percolator, 206. Baking and Roasting, 210. Vacuum Cleaners, 212.
=Why is there Always a Soft Spot in a Cocoanut Shell? 214. How does a Gasoline Motor Run an Electric Street Car? 214. How do Carrier Pigeons Carry Messages? 216. What Family has Over 9,000,000 Members? 216.=
Invention, 217. Essential Factor in American Life, 218. America Leads in Telephone Growth, 220. American Telephone Practice Superior, 222. The First Transcontinental Line, 225. Wireless Speech Transmission, 226. The Mobilization of Communication, 228.
=Why do they Call Them “Fiddler-Crabs”? 229. How Far can a Powerful Searchlight Send its Rays? 229. What Started the Habit of Touching Glasses Before Drinking? 231. Why are Windows Broken by Explosions? 231. What does the Expression “Showing the White Feather” come from? 231.=