296 APPENDIX. 



The more numerous the bees in a hive, the more heat is 

 developed ; and hence strong hives can resist the most 

 intense cold. It once happened that I forgot to remove 

 from the door, which was unusually large, of a hive in 

 winter, a perforated plate of tinned iron, which I had 

 fastened over the opening to diminish the heat in July ; 

 and yet this hive came well through the winter, although 

 th cold was very severe, having been for several days 

 so low as 0. But I had added to this hive the bees of 

 two other hives ! When the cold is very intense, the 

 bees begin to hum. By this means respiration is accele- 

 rated and the development of heat increased. If, in 

 summer, bees without a queen are shut up in a glass box, 

 they become uneasy and begin to hum. So much heat is 

 by this means developed, that the plates of glass become 

 quite hot. If the door be not opened in this case, or if 

 air be not admitted, and if the glass be not cooled by the 

 aid of water, the bees are soon suffocated. 



XX. COMPOSITION OF BEES' WAX. 



Guy Lussac De Saus- Calculated 



and Th6nard.a sure.6 Oppermann.c Killing. d Hess.e ConHonO. 



Carbon 81-784 81-607 81-291 81-15 81-52 81-39 



Hydrogen 12-672 13 859 14-073 13-75 13 23 13 29 



Oxygen 5-544 4-534* 4-636 5-09 5-25 5-32 



a Traite de Chimie, par Thenard, 6me. e d., IV., 477. 



b Ann. de Ch. et de Phys , XIII., 310. 



c Ibid., XLIX., 224. 



d Annal. der Pharm., II., 267. 



e Ibid., XXVII., 6. 



