First care, 307 Strong Stocks disposed to plunder, 307 Bees Changeable, 308 Requisites for good Stocks, 308 Great disadvantage of killing the Bees, 309 Section of country may make a difference in what poor stocks need, 309 When Bees are needed, 310 Caution, 311 Principal Difficulty, 311 How Avoided, 311 Advantages of making one good stock from two poor ones, 312 Two families together will not consume as much as if separate, 312 An Experiment, 312 Season for operating, 313 The Fumigator, 314 Directions for uniting two families, 315 Uniting with Tobacco Smoke, 317 Condition of Stocks in 1851, 318 How they were managed, 318 Cause of their superior Thrift, 319 Swarms partly filled pay better than to cut out the honey, 320 Advantages in transferring, 320 Another method of uniting two families, 321 Uniting Comb and Honey as well as Bees, 322 When feeding should be done for Stock Hives, 323 CHAPTER XXII. WINTERING BEES.