REVIEW ON GERM I NATION 



169 



are seen emerging from the twit ends of the caulicle- 

 sheath, c, m ; the epicotyl has grown to p; the first 



plumule -leaf is at o. 



Review. What does a seed contain! What do you understand 

 by the embryo? Wh.it are its parts! Where is the food in the seed I 

 What are the seed-coats .' What is 

 tin- micropyle! Hilurn? How may 

 the position of the mieropyle he 

 determined! How do seeds differ! 

 With what are these differences as- 

 sociated! What is germination! 

 Under what conditions does a seed 

 germinate' When is ffermination 

 complete! What is the first phenom- 

 enon of germination? Explain the 

 relation to O and CO... Define hypo- 

 eotyl. Epicotyl. Hypogeal and epi- 

 geal germination. What becomes 

 of the plumule! Explain germina- 

 tion in a seed which you have 

 studied. 



Note. Few subjects connected 

 with the Btudy of plant life are bo 

 useful in Bchool-room demonstra- 

 tions as germination. The pupil 

 should prepare the soil, plant the 

 sicds, water them, and care \'<- the 

 plants. Plant in pots or shallow 

 boxes. Cigar-boxes are excellent. 

 The depth of planting should be 

 two to three t imes t he diameter of 

 the Beeds. It is well to begin the 

 planting of Beeds at least ten days 



in advance of the lesson, and to 

 make four or five different plantings 



terminal Ion li complete ;. top 

 ..r epleotj I ; . plumule leaf . m . 

 root . s, lowoi i 



at Intervals. A day or two before the Btudy is taken up, put Beeds to 

 soak in moss or cloth. The pupil then has q series from swollen 

 Beeds to complete germination, and all the Bteps can be made out. 

 Dry Beeds should be had for comparison. 



<; 1 seeds for Btudy are those detailed in the lesson, bean, 



castor bean, corn. Make drawings and notes ot all the events in the 



