Chapter XXXVII. Treadles and Water Motors[209]
262. Definition of motor. 263. The treadle. 264. Water motors.265. Selecting a water motor. 266. Two types of watermotors.
Chapter XXXVIII. Engines; Motors and Batteries; Fuels[212]
267. Gasoline engines. 268. Figuring speed of pulleys. 269.Operating the engine. 270. Points in caring for engine. 271.Generating electricity for homes. 272. Batteries. 273. Liquidbatteries. 274. A dry-cell battery. 275. Storage batteries. 276.Some uses for electric motors. 277. Definition tables.
Chapter XXXIX. Gas Plants[220]
278. Gasoline gas plants. 279. Acetylene-gas plant. 280. Directionsfor operating acetylene plant. 281. Cautions to be observedin using acetylene gas. 282. Compressed gases and oils.

PART XI. MEASURING DEVICES

Chapter XL. Scales for Weighing[225]
283. Equal-arm balances. 284. Unequal-arm balances. 285. Springscales.
Chapter XLI. Devices for Measuring Volume[227]
286. Graduate and measuring cup. 287. Tablespoons. 288. Teaspoons.289. Standard measuring spoons. 290. Liquid and cookingmeasures. 291. Dry measures. 292. Cubic, square and linearmeasures.
Chapter XLII. Gas, Water and Electric Meters[230]
293. Different kinds of meters. 294. Construction of a gas meter.295. Reading the gas meter. 296. Water meters. 297. Prepaymentmeters. 298. The electric meter.
Chapter XLIII. Thermometers and Thermostats[233]
299. Mercury thermometers. 300. Oven thermometer. 301. Maximumthermometers. 302. Thermostats.
Chapter XLIV. Hydrometers and Barometers[237]
303. Hydrometer. 304. Hygroscopes. 305. Barometers.

PART I

Cooking Stoves

CHAPTER I

Wood and Coal Stoves

A brief explanation of stoves is given in this chapter to help the woman with a new stove or with an old one which she does not understand so that she may manage it without wasting fuel and nervous energy.