The Bebmoth or Waxwokm 



Table 27.— Results of fumifiating infested combs with carbon' bisulphide. 



37 



Stage of 

 bcemotti. 



Moth. 

 Moth. 



Moth. 



Moth. . 

 Pupae. 

 Pupae. 

 Pupae. 

 Pupae. 



Larvae 



(in cocoons) 

 Larvae 



(in cocoons) 

 Larvae . 



(in cocoons) 

 Larvae . 



(exposed)* 

 Larvae 



(exposed)* 

 Larvae 



(exposed)* 

 Larvae 



(exposed)* 

 Larvae 



(exposed)* 

 Larvae 



(exposed) * 



Larvae 



. (exposed) * 

 Larvae 



(exposed) * 

 Larvae 



(exposed)* 

 Larvae 



(exposed)* 

 Larvae 



Larvae 



(exposed) ♦ 



Amount of liquid 



carbon bisulphide 



used per cu. ft. 



One-hnif ounce. 

 Two-thirds oune 



Thiec-oisliths ,ounoo 



One-fourth ounne. . . 

 One-sixth ounce. . . . 

 One-fourth ounce. . . 

 Three-eighth.s ounce 



One-half ounce 



One-eighth ounce. . . 

 One-fourth ounce. . . 

 Five-eighths ounce. . 

 One-sixth ounce. . . . 

 One-eighth ounce. . . 

 One-eighth ounce. . . 

 One-foiirth ounce. , . 

 One-fourth ounce. . . 

 One-fourth ounce. . . 



One-half ounce 



Three-fourths ounce 

 Three-fourths ounce 



One ounce 



One ounce 



One ounce 



rime of 

 ■niilint'mcnL. 



15 iTiiniites. , 

 20 minutes. 



20 minutes. . 



'20 minutes.. 

 24 hours. . . . 

 24 hours ... , 

 24 hours. . . . 

 24 hours. . . , 



24 hours 



24 hours 



24 hours ... 

 24 hours. . . 

 24 hours . . . 

 24 hours . . . 

 24 hours . . . 

 4 hours. . . 

 24 hours .. . 

 24 hours . . . 

 24 hours . . . 

 24 hours. . . 

 24 hours. . . 

 24 hours... 

 24 hours . . . 



EffocI 



Killed 

 Killed 



Killed 



Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 

 Killed 



Remarks. 



The moth was unable to walk with- 

 in 10 minutes after being con- 

 fined. 



The moth was unable to walk with- 

 in 10 minutes. Not all the bi- 

 sulphide evaporated. 



The moth was dead before all the 

 bisulphide evaporated. 



Several larvae in cocoons were also 

 killed. 



Several larvae in cocoons were also 

 killed. 



Several larvae in cocoons were also 

 killed. 



Several larvae in cocoons were also 

 killed. 



Some died in one hour in cocoon. 



Some died in one and one-half 

 hours in cocoon. 



Larvae 10 days old an(J well pro- 

 tected. 



These larvae were live days old 

 and well protected in webs. 



Larvae were 25 days old, and pro- 

 tected. 



These were 20 days old and fairly 

 well protected. 



These were 20 days old and ex- 

 posed. 



These were 12 days old and ex- 

 posed. 



These were 15 days old and fairly 

 well protected. 



Eggs were present which hatched 

 afterward. 



Eggs were present; hatched after- 

 ward. 



Eggs were present, hatched after- 

 ward. 



Eggs were present; hatched after- 

 ward. 



♦These larvae were feeding in enipty combs. 



In all the experiments conducted, the eggs of the beemoth were nn- 

 injured by the fumes of carbon bisulphide. It is possible that in cases 

 of extremely large doses the eggs may be injured. 



A number of experiments -were conducted to determine the efEect of 

 the fumes of carbon bisulphide upon the larvae. Comb containing 

 larvae of various ages and different degrees of protection was fumi- 

 gated. Many experiments were made with the larvae in cocoons, and 

 these showed that the carbon bisulphide was very effective. The larvae 

 which are hardest to kill are those about three-fourths grown and well 

 protected in a mass of webs and refuse. Ordinarily the larvae succumb 

 to the average dose of carbon bisulphide in a comparatively short time. 

 The outcome of the experiments demonstrated the effectiveness of carbon 

 bisulphide for the destruction of the larvae. 



Several experiments were conducted to determine the effect of carbon 



