244 



Organisms 



Temp. 



' Time of Exposure to i 



Cold & Other Conditions Investigators 



3. Protozoa 



Colpoda cmuUus 

 (Cysts) 



Amoeba proteus 

 Aiitocha lh)i(i.r 

 Amoeba dartylifera 

 Aetinophri/s sol 

 Paramaeviion 



bursaria 

 Euglena riridi.s 



L. air 



L. air 



-190° and 

 -269° to 

 -271° 



13V2 iirs.; previously 

 air-dried 



12i.> days; previously 

 subjected to a vac- 

 uum of about 10-^ 

 mm. of mercury for 

 2 to 3 days 



480 hrs. at -190° and 

 71/2 hrs. at -269° to 

 -271°; in soils pre- 

 viously dried in a 

 vacuum over barium 

 oxide for 3 months, 

 then sealed in glass 

 tubes evacuated to 

 lO-'mm. of mercury 



Taylor & 



Strickland, 



1936 

 Taylor & 



Strickland, 



1936 



Becquerel, 

 1936 



4. Spores and Seeds 



