346 INDEX. 



CHAPTER IV. 



EGGS LARViE — TIME TO DEVELOP, ETC. 



Drone-eggs, when laid, 69. Royal cells constructed simultaneously 

 with drone-egg laying, 70. The operation of laying described, 71. 

 Time that eggs remain in the cells, 72. Larvffi, how long fed, when 

 sealed over, etc., 72. Period of development, etc., 73. Number of 

 bees in a hive, 73. Relative proportion of drones, 75. Young queens 

 produce few or no drone-brood, 76. Position of eggs and larvae, 76. 



CHAPTER V. 



DIVISION OF LABOR OF BEES. 



Division of labor proved, 79. Pollen and propolis gatherers, etc., 81. 

 Bees gather from one kind of flower only during the same excursion, 

 81. Sentinels, 81. The wonderful operations of ventilating bees ! 83. 



CHAPTER VI. 



BLACK BEES. 



CHAPTER VII. 



POLLEN, OR BEE-BREAD. , 



Bee-bread injurious when stored in surplus quantities, 87. Color of 

 bee-bread, different colors kept distinct, 87. How fed to larrse, 89. 

 Cells only partly filled with pollen, 88. 



CHAPTER Vin. 



WATER AND ITS USES. 



How furnished to bees, 90. Experimental evidence of the use of 

 water, 91. Singular discovery in regard to the use of water on very 

 windy and wet days, 91. The use that bees make of water, 92. Water 

 used in wet weather abundantly, 93. Decrease and final termination 

 of the use of water, 94. A close fence around the apiary necessary in 

 certain cases, 95. 



CHAPTER IX. 



SALT HOW TO BE USED. 



Salt put under the edges of hives, 96. Salt necessary for bees, 98. 

 CHAPTER X. 



PROPOLIS. 



Ruber's opinion on propolis, 100. Propolis an elaborated substance, 

 101. 



