A YEAR IN SCIENCE 95 



1. twelve dry seeds in a bottle in which there are 

 several layers of barely moistened blotting paper; 



2. twelve soaked seeds in a bottle with barely 

 moistened paper ; 



3. twelve soaked seeds in a bottle with thoroughly 

 wet paper ; 



4. twelve soaked seeds in a bottle and almost cover 

 them with water. 



Place these bottles aside under similar conditions of 

 temperature, light, and air supply. Make daily obser- 

 vations for a week and tabulate results as above. What 

 do you conclude from this experiment? 



C. Relation of air supply to growth. 



Place several layers of blotting paper in each of 

 two bottles. Moisten the paper thoroughly. Fill each 

 bottle one-third full of soaked seeds. Cork one of the 

 bottles tightly making it air tight, and leave the other 

 open. With all other conditions the same, set the 

 bottles aside. At the end of 48 hours examine the 

 seeds in each bottle and record results. Is air neces- 

 sary for the germination of seeds? 



Exercise 65. Seedlings. * 



Object: A general study of seedlings. 



Apparatus 



Wide mouth bottle Seedlings, peas, corn, etc. 



Mosquito netting Scalpel 



Directions: A. Make observations on a number 



