APIS MELLIFICA. 189 



of the sting, which will remain caught in the leather. Observe 

 the spasmodic contractions of the poison sac. See how long 

 and how energetically the movements are continued and how 

 deep the sting is worked in. This should remind you that a 

 sting should be removed immediately, and that it should not be 

 pulled out, as grasping the poison sac will aid in injecting the 

 poison, but scraped off with a finger-nail or rubbed off. 



A drawing showing the mechanism of the sting is desirable. 



Field: A Study of an Ant. Proc. Acad. Nat. Sci., Philadelphia, 1901. 

 Philips: A Review of Parthenogenesis. Proc. Am. Phil. Soc., 42, 1903. 

 Root: A, B, C and X, Y, Z of Bee Culture. 



