PROPAGATION OF PLANTS. 207 



sliould eventually sliow the age at vvliich the various 

 kinds of seeds may be profitahlv i>lante(h 



(4) The Method oe Preservation of seeds 

 is of importance. Seeds should he freed from 

 an)' pulp)- materiah carefully dried under mod- 

 erate temperature, laheled with name and date, 

 and stored in a cool, dry place which is abso- 

 lutely mouse-proof. 



III. Germination of Seeds. 



A study of the conditions necessary for the 

 germination of seeds. 



1. Te/iipenjfi/re. 



Experiment iS. — {a) Plant separate groups of similar, 

 uniform-sized seeds of any garden or farm crop in jars 

 or pots containing some moist pourous material — as, 

 sawdust, sand, or moss 



{b) Place these jars in different parts of the building 

 which have decidedly different temperatures — as, a north 

 window, a south window, near a register, and in a 

 basement. 



{c) Record the temperature at each of these places each 

 morning, noon, and night. 



[d) Note the time of the appearance of each group of 

 seedlings, and determine the time required for germina- 

 tion. 



(<?) Record tlie data thus obtained in tabular form. 



(/) Compare. What does the experiment teach? 



2. Moisture — Soaking seeds: effect of upon germi- 

 nation. 



Experiment 19. — {a) Select a given number of seeds 

 of various kinds — as, corn, wheat, beans, squash, and 

 tomato. 



(b) Divide each kind into two lots. Plant one of these 



