Sting of Bees. 131 
This organ inthe worker bee is straight, and not curved 
as is the sting of the queen. The poison which is emitted 
in stinging, and which causes the severe pain, is an acid 
fluid, which is secreted by a double tubular gland, (Fig. 23, 
Fic. 51. 
Sting with Lancets drawn one side, cross-section of Sting, and a Lancet, much 
magnified, 
C Poison sac. M Tube from sac to reservoir. _ S Reservoir. 
A Awl. B, B Lancets. E, E Valves. 
U, U Barbs. O, O Openings from hollow in # Hollow in awl. 
4, Z Hollows in lancets. lancets, T, T Ridges in awl. 
Groove in Jancet. 
p, £), and stored in a sac (Fig. 51, c, and 23, p,c,) which is 
about the size of a flax seed. ‘This sac is connected by a 
tube ( Fig. 51, 47) with the reservoir of the sting. The sting 
is a triple organ consisting of three sharp hollow spears, 
which are very smooth and of exquisite polish. If we mag- 
