REFERENCES 133 



3. What conditions outside a seed are necessary to make it grow? 

 What conditions inside the seed ? 



4. Compare an engine with a plant or an animal. In what ways 

 are they alike? 



5. Make diagrams to show how corn grains and bean seeds differ? 



6. How could you determine whether light is necessary for the germi- 

 nation of seeds ? 



Useful Refekences 



Burlingame and others, General Biology. Chapter IV. (Henry Holt 



& Co. 1922.) 

 Coulter, Barnes, and Cowles, Textbook of Botany, Vol. Two. (Ameri- 

 can Book Company.) 

 Eikenberry and Waldron, Educational Biology. (Ginn and Co. 1930.) 

 Ganong, The Teaching Botanist. (The Macmillan Co.) 

 Holman and Robbins, Textbook of General Botany, pp. 285-308. (John 



Wiley & Sons. 1928.) 

 Hunter, New Laboratory Problems in Civic Biology. Unit VI. (Ameri- 

 can Book Company.) 

 Moore and Halligan, Plant Production. (American Book Company.) 

 Trauseau, General Botany. Chapter VI. (World Book Co. 1923.) 

 Waters, Essentials of the New Agriculture. (Ginn & Co. 1924.) 



H. BIO — 10 



