INTELLIGENCE OF THE CELL 259 



tonia, whose leaves are one and a half to three feet high, 

 the hood bearing a gaudily colored 'fish-tail' appendage, 

 the whole structure being a more elaborate insect trap 

 than are the leaves of Sarracenia. In these traps not only 

 are the remains of flies found, but bees, hornets, butter- 

 flies, beetles, grasshoppers and even snails have been 

 reported. The species of Nepenthes from the oriental 

 tropics, very common in conservatories, develop most 

 remarkable leaves, the lowest part being an ordinary 

 blade, beyond which is a well-developed tendril, at the 

 end of which there arises an elaborate pitcher with a lid. 

 There is the same sweetish secretion at the rim of the 

 pitcher, and the same accumulation of water within as in 

 the ordinary pitcher-plants. Leaves of sundews. The 

 sundews are forms of Drosera and grown in swampy 

 regions, the leaves forming small rosettes upon the 

 ground. In one form the blade is round, and the margin 

 is beset by prominent bristle-like hairs, each with a 

 globular gland at its tip. Shorter gland-bearing hairs are 

 scattered also over the inner surface of the blade. All 

 these glands excrete a clear sticky fluid, which hangs to 

 them like dewdrops, and which, not being dissipated by 

 sunlight, has suggested the name of sundew. If an insect 

 becomes entangled in one of the sticky drops, the hair 

 begins to curve inward, and presently presses its victim 

 down upon the surface of the blade. In the case of a 

 larger insect, several of the marginal hairs may join 

 together in holding it, or the whole blade may become 

 more or less rolled inward. 



Leaves of Dionoea. This is one of the most famous 

 and remarkable of insect-trapping plants, being found 

 only in certain sandy swamps near Wilmington, N. C. 

 The leaf-blade is constructed so as to work like a steel 

 trap, the two halves snapping together and the marginal 



