THE OUTDOOR WORLD. 



93 



the branch on which they grew, near the The excrescences are greenish in color, 



same place; and were not racemed, as somewhat conical in shape, but trunca- 



grapes are. ted or terminating abruptly; and are 



An incision across one of these sections covered with a soft down, as may be 



THE GRAPE-VINE FILBERT GALL 

 (Cecidomyia coryloides.) 



disclosed orange-colored larvae encysted noticed in the illustration ; and they seem 

 in its substance ; proving them to be the to be of the same firm substance through- 

 result of eggs deposited in the flowers of out. and are not spongy inside, as oak 

 the grape by a species of gall fly. galls are. 



THE LENS 



A Plant That Catches Insects For 

 Food. 



There are several plants that catch 

 insects for food, but perhaps the small- 

 est, prettiest and having the most in- 

 teresting method is the sundew 

 (Droscra rotundi folia). This plant is 

 common in certain sandy and sunny 

 marshes, where it blooms in July and 

 August. It has an onen rosette of 

 leaves, near the ground, clothed with 



reddish, bristly hairs each tipped with 

 a purple gland. These hairlike ten- 

 tacles are for catching insects that are 

 attracted by the flower-like color or 

 perhaps by the odor of the leaves. 

 These apnarently sensitive bodies close 

 over an insect and hold it down by 

 means of a viscid secretion that exudes 

 from the' glands. Even tentacles not 

 touched by the insect curve toward it 

 and ultimately aid in this. How do 



