464 ENEMIES OF BEES. 



ten or eleven days ; and they often spin so late in the Fall, 

 as not to emerge until the ensuing Spring. 



810. In Northern latitudes where the thermometer 

 ranges for days and weeks below 10'' the bee-moth-worm 

 can winter only in the hive near the bee-cluster. It is a 

 fact worth}' of notice that Apiaries that are wintered in the 

 cellar are more annoyed by the moth during the following 

 Summer than those that are wintered out of doors, because 

 none of the larvfe of the moth perish. 



Dr. Donhoff says that the larvae become motionless at a 

 temperature of 38'' to 40°, and entirely torpid at a lower 

 temperature. A number, which he left all Winter in his 

 summer-house, revived in the Spring, and passed through 

 their natural changes. This was in Germany where the 

 Winters are milder than in our Northern and Middle 

 States. 



"If, when the thermometer stood at 10°, I dissected a chrysalis, 

 it was not frozen, but congealed immediately afterwards. This 

 shows that, at so low a temperature, the vital force is sufficient to 

 resist frost. In the hive, the chrysallds and larvaa, in various 

 stages of development, pass the Winter in a state of torpor, in cor- 

 ners and crevices, and among the waste on the bottom-boards. In 

 March or April, they revive, and the bees of strong colonies com- 

 mence operations for dislodging them." — Donhoff. 



Some larvae which Mr. Langstroth exposed to a tempera- 

 ture of 6° below zero, froze solid, and never revived. Others, 

 after remaining for eight hours in a temperature of about 

 12', seemed, after reviving, to remain for weeks in a crippled 

 condition. 



" The eggs of the bee-moth are perfectly round, and very small, 

 being only about one-eighth of a line in diameter. In the ducts of 

 the ovarium, they are ranged together in the form of a rosary. 

 They are not developed consecutively, like those of the queen bee, 

 but are found in the ducts, fuUy and perfectly formed, a few days 

 after the female moth emerges from the cocoon. She deposits them, 

 usually, in little clusters on the combs. If we wish to witness the 



