160. Kinds of washing machines. 161. Suction machines. 162. Cylinder washers. 163. Rotary washers. 164. Machine with an oscillating washing device. 165. Oscillating washers. 166. Locomotive washer. 167. Centrifugal washer. 168. Care of washers. CHAPTER XXIV. WRINGERS 138 169. Roller wringer. 170. Care of wringers. 171. Centrifugal wringer or drier. 172. Care of the machine. 173. Combination washer and wringer. CHAPTER XXV. MANGLES AND IRONS 141 174. Construction of mangles. 175. Cold mangles. 176. Heated mangles. 177. Care and use of mangles. 178. Flat, or sadirons. 179. Charcoal irons. 180. Electric irons. 181. Gas irons. 182. Acetylene irons. 183. Alcohol irons. 184. Gasoline irons. PART VII. HOUSE-CLEANING EQUIPMENT CHAPTER XXVI. VACUUM CLEANERS AND CLEANING TOOLS 147 185. Principle upon which vacuum cleaners work. 186. Different kinds of vacuum cleaners. 187. Nozzle of vacuum cleaner. 188. Cautions in using vacuum cleaners. 189. Difference between hand and power cleaners. 190. Carpet sweeper. 191. Mop wringers. PART VIII. DEVICES FOR PREPARATION AND CONSERVATION OF FOOD CHAPTER XXVII. POTS, PANS AND OTHER DEVICES 155 192. Materials from which Utensils are made. 193. Aluminum alloy. 194. Cast-iron utensils. 195. Earthenware. 196. Aluminum and graniteware. 197. Mixing spoons. CHAPTER XXVIII. PARERS, SEEDERS, GRINDERS, SLICERS, ETC. 159 198. Fruit and vegetable parers and knives. 199. Parers which grate off skins. 200. Seeders and Stoners. 201. Cherry stoner. 202. Grinders. 203. Choppers or meat grinders. 204. Choppers. 205. Slicers. 206. Lard and fruit presses, sausage stuffers. CHAPTER XXIX. MIXERS, BEATERS AND CHURNS; COFFEE POTS 165 207. Use of mixers, beaters and churns. 208. Care of these devices. 209. Freezers. 210. Care of freezers. 211. Churns. 212. Drip coffee pots. 213. Percolator coffee pots. CHAPTER XXX. DISH-WASHERS, CANNERS AND DRYERS 170 214. Dish dryer. 215. Cleaning silver. 216. Canners. 217. Water seal. 218. Pressure canners. 219. Use of the canner. 220. Dryers. 221. Care of dryers. CHAPTER XXXI. SEPARATORS AND EMULSIFIERS 178 222. Cream separators. 223. Different types of separators. 224. Washing the machine. 225. Oiling. 226. Whey separator. 227. Emulsifier. PART IX. SUNDRY DEVICES CHAPTER XXXII. DUMBWAITERS AND OTHER HOUSE FURNISHINGS 183 228. Dumbwaiters and window adjustments. 229. Check valves. 230. Door fastener. 231. Window shades. 232. Hinges. 233. Sliding doors. CHAPTER XXXIII. SEWING MACHINES 186