208 



SCHULTZ, DUMONT, AND KYTE 



TABLE 1 



SUMMARY OF MORPHOLOGICAL AND MOTILITY CHANGES 

 IN Tetrahymena EXPOSED TO SYNTHANE PRODUCT WATER 



♦Percent of initial population expressing trait; remainder have normal shape. 

 tPercent of existing population expressing trait; remainder have normal 

 motility. 



35% of that of the controL Thus, at least with this toxicant, 

 respiratory rates undoubtedly reflected changes in population densi- 

 ties rather than alterations in the respiration of individuals. We 

 should note that the slow, continued uptake of oxygen, even up to 

 240 min in 5% condensate, was probably caused by respiratory 

 activity of detritus (mitochondria) from lysed cells. 



The following results were obtained in tests designed to monitor 

 changes in oxygen utilization and/or saturation levels immediately 

 after addition of toxicant to the oxygen monitor (during the first 

 3 min). Introducing 0.3 ml of full-strength gasifier condensate into 

 the sample chamber containing the cell suspension caused an 



