66 MISSOURI AGR. EXP. STA. RESEARCH BULLETIN NO. 21 



6 



1- Concrete 



5- IDrai n 



6-BtanUets 

 3~ Receptacle for Twigs 7- Thermometer 

 4-Supports G'SdwdLust 



ir Space 



Fig. 3. Upper, freezing apparatus and lower humidor, shown in detail. 



