FIGURE I. — FREEZING APPARATUS FOR PLANTS THAT 

 KILLED AT A TEMPERATURE NOT LOWER THAN -12° TO -15° C. 



1. Space in which salt and ice mixture was placed; 



2. Chamber in which plants were frozen; 



3. Lid which covered freezing chamber; 



4. Wire leading to small electric fan beneath hardware 

 bottom pn which plants were frozen. (See page 156.) 



cloth 



