64 THREE KINGDOMS. 



XIV. Make lists of sprinff flowers, summer flowers, etc., 

 or flowers of e certain month. Note the procession 

 of flowers. 



XV. Study the odors of flowers; make lists of fragrant 

 ones, note at what seasons they are found, and their 

 relation to the color, habitat, etc., of the plant, and to 

 insects. 



XVI. Study the weeds of a locality, and try to learn why 

 they are so common, how their seeds are carried, why 

 they are troublesome or so difficult to exterminate. 

 Try to find out their original home by reference to 

 books. 



XVII. Make a list of the flowcriny tinier of our common- 

 est plants. Repeat this next year and note whether 

 the dates are the same; if not, why? 



XMI1. Note the ways in which plants protect them- 

 selves against cold, rain, insects, or other enemies; 

 study thorns, prickles, hair, wax, bad odors, etc. 



XIX. Relations of plants io each other; helpful, harmful. 



XX. Relations of animals Io plants; helpful in distribiit- 

 ing seeds or carrying 1 pollen; harmful in destroying 

 leaves, buds, fruits, roots, etc. 



XXI. Relation of wind and water to plants; carrying- 

 pollen, seed, roots, etc. Wind bringing- rain, rain 

 dissolving food in ground, etc. 



XXII. Climbing plant*; make list of those found; study 

 their ways and means and habitats; note how the 

 same end may be attained in very different manners; 

 observe how trees and other objects on which they 

 grow are affected. 



