GROWTH OF PLANTS FROM THE SEED. 23 



3. Examine in the same way starch from the endosperm 

 of a corn seedling that has attained several inches 

 in height. 



XI. Write a detailed account of the phenomena of 

 germination as far as you have observed them. 



SPECIAL STUDIES. 



I. How seedlings break through the ground. A 

 further comparison, including the study of as 

 many species as practicable. 



II. Results of planting certain seeds wrong side up. 1 



III. Results of removal of cotyledons at an early stage 



of growth. 



IV. Whether detached embryos are capable of germi- 



nation. 



V. Conditions most favorable to germination. 

 VI. Length of time that seeds retain their vitality. 



VII. How far seedlings of the same family are alike in 

 structure and habits. 



VIII. Changes capable of demonstration under the micro- 

 scope that take place in reserve materials during 

 germination. 



REVIEW AND SUMMARY. 



In our study of seedlings we have found that the same 

 parts are present that were observed in the seed, but 

 marked changes have taken place in size, position, texture, 

 and other particulars. The distinctive features of the 



1 Cf. Darwin, I.e., pp. 103, 104. 



