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3. "Sleep of Plants." 



(a) Folding of leaves clover, oxalis, lupine, acacia. Note man- 



ner of folding. 



(b) Seedlings cotyledons fold up and leaves down. 



(c) Upper surface of leaves avoids zenith at night to prevent ra- 



diation of heat. 



4. Movement, Result of External Stimuli. 



(a) Twining stem of dodder. 



(b) Tendrils of grape, flowering cucumber, sweet pea. 



(c) Leaves of sensitive plant, Venus fly-trap, drosera. 



BIRDS. 



I. Relation of Birds to Man. 



1. 'Scientific Type of Animal Kingdom. 



2. Economic Service Rendered. 



(a) Checking increase of insects. 



(b) Devouring small rodents. 



(c) Destroying seeds of harmful plants. 



(d) Acting as scavengers. 



3. Aesthetic Appreciation of Birds. 



(a) Beauty of form and plumage. 



(b) Grace of motion. 



(c) Power of song. 



(d) Habits of life. 



II. Outline for Identification. 



1. Size Compare with Sparrow or Robin. 



2. Color. 



(a) Attractive oriole, cardinal, tanager. 



(b) Protective song sparrow, quail, creeper. 



3. Markings. 



(a) Top of head kinglet, chickadee. 



(b) Back oriole, bobolink. 



(c) Breast kingfisher, plover. 



(d) Wings golden-winged woodpecker, night hawk. 



(e) Tail meadow lark, king bird, cedar bird. 



4. Shape. 



(a) Body. 



(1) Long and slender; short and thick. 



(2) Relation of shape to habitat earth, air and water. 



(b) Bill. 



(1) Short and stout; long and slender; long and heavy; 

 slender and delicate; hooked; curved; crossed. 



