backs in the cell, and the head points upward. The color gradually 

 changes from light yellow to brown after the larva dies. There is no 

 ropiness, and the only odor is that of sour decaying matter, not at all 

 like that of American foul brood. In case the larvae are capped over, 

 the cappings do not become dark, as in the case of the contagious 

 diseases, but they may be punctured. So far no cause can be given 

 for this disease, and whether or not it is contagious is a disputed point. 

 Usually no treatment is necessary beyond feeding during a dearth of 

 honey, but in very rare cases when the majority of larvae in a comb are 

 dead from this cause the frame should be removed and a clean comb 

 put in its place to make it unnecessary for the bees to clean out so 

 much dead brood. 



CHILLED, OVERHEATED, AND STARVED BROOD. 



Many different external factors may cause brood to die. Such dead 

 brood is frequently mistaken, by persons unfamiliar with the brood dis- 

 eases, for one or the other of them. Careful examination will soon 

 determine whether dead brood is the result of disease or merely some 

 outside change. If brood dies from chilling or some other such cause, 

 it is usually soon carried out by the workers, and the trouble disappears. 

 No treatment is necessary. Brood which dies from external causes 

 often produces a strong odor in the colony, but wholly unlike that of 

 American foul brood, merely that of decaying matter. The color of 

 such brood varies, but the characteristic colors of the infectious diseases 

 are usually absent, the ordinary color of dead brood being more nearly 

 gray. 



Approved : 



James Wilson, 



Secretary of Agriculture. 



Washington, D. C, October 3, 1906. 



O 



