62 PREDATORY PLANTS. [CHAP. 
with a small knob or gland. These glands secrete a 
viscid fluid, which, glistening in the sun, add not a 
little to the general prettiness of the plant. The whole 
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Fic. 73- 
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leaf bears somewhat the appearance of a flower, and 
there is little doubt that insects often come to it under 
that idea, but the delusion proves fatal. Mere con- 
tact with the sticky fluid is sufficient temporarily to 
