249 



Organisms 



Temp. 



Time of Exposure to 

 Cold & Other Conditions 



Investigators 



Diatoms 



ChloreUa 



Sticliococcus 

 bacillaris 



Trypanosomes 

 (various) 



Trypanosoma 

 gam biense 



Trypanosom,a Lewisi 



Trypanosoma brucei 

 Trypanosoma 



venezuelense 

 Trypanosoma 



equiperdum 



Dourine 



Trypanosome 



Eggs of Macrohiotus 

 (Tardigrad) 



Spores of various 

 fungi 



Spores of 

 Melanconium, 

 Coniothyrium, 

 Euroiium and 

 Cystospora 



2. Monocellular Algae 

 -200° 



L. air 



L. air 

 -183° to 

 -192° 



3. Protozoa 



L. air 



L. air 

 L. air 



L. air 



•L. air 

 L. nitr. 



5 to 25 min. 



20 min. 

 75 min. 



1 hr. 



21 days 

 20 hrs. 



4. Germ Cells and Spores 

 L. air and 



L. hydr. 



-252° 



-268° to 

 -272° 

 L. air 



50 hrs.; suspended in 

 0.85% NaCl solution 

 71/2 hrs. 



1 hr. ; suspended in 

 water 



Laveran & 



Mesnil, 



1904 

 Gaylord,1908 



Quoted from 



Doflein, 



1911 

 Laveran & 



Mesnil, 



1904 



DeJong, 1922 



Jahnel, 1937 



Rahm, 1920, 

 1923 



Kadisch,1931 



Kadisch,1931 



Alexopoulos 

 & Drum- 

 mond,1934 



Rotifers (various) 



5. Metazoa 



L. hydr. 

 -253° 



2 days in L. air and 1 1 Rahm, 1920, 

 day in L. hydrogen 1921, 1923 



