j2— THE PSYCHOLOGY 



this fart.) Compare root-stock with potato tuber, bulb cii onion, comi of Indian 

 lunii|->. Is tho root-stock a stem or a root? Why? Compare roots with 

 brandies, in size, shape, structure, as far as possible. Compare roots with those 

 of other plants. 



THIRD STAGE. 



Under the head of each, review work of preceding- stag-es. 



\Vh\- do the plants grown in different condi-tions vary? In what kind of soil 

 would a plant of this nature spread most rapidly? How should plants that grow 

 in patches be destroyed? What other plants grow in patches? Compare with 

 this one after inferring' in what respects they should ag"ree. What is the relation 

 of the structure of the flower to that of the bee? 



PART OF PLANT ABOVE GROLND. 



Determine the exact leaf arrang-ement of the leaves on the stem. Why 

 arrantfcd in this way? Is the stem woody or soft? Are the leaves net veined or 

 parallel-veined? Write a full description of stem, leaf, and mode of flowering, 

 using technical terms. What other flowers resemble this fjne in mode of flowering? 

 (Inflorescence.) Is the plant an exogen or endogen? 



FLOWER. 



Write a full description according to some prescribed fonn, stating the number 

 of parts in each whorl, and the relation of each whorl to each other. Do this first 

 in simple language, and gradually introduce technical terms, such as gamopetalous, 

 etc. Determine the relation between the position of stamens and stigma, which 

 favors cross fertilization by bees. What other flowers have closed corollas? 

 Why? Why is the corolla spurred? What other flowers hav'e spurred corollas? 

 Compare the lengths of the spurs. By what other means do plants favor visits by 

 bees? What other insects cross-fertilize flowers? Obtain further information 

 from books on Nature, by Darwin, Gibson, Grant, etc. 



Classify the plant. 



FRIIT. 



Write a full description of the fruit. Compare with other dry dehiscent fruits. 

 In what ways does the fruit favor the preservation of the plant? 



PART OF PLANT UNDERGROIND. 



Compare the structure of the root-stock with that of the stem above ground. 

 What is the difference between root-stock and root? Determine the age of the 

 root-stock by counting the rings of wood. Examine the root-stock in the fall 

 and see what preparation has been made for next gear's growth. Compare with 

 annuals and biennials. 



