. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TOXIC ACTION OF KCN ON PARAMECIUM AND DIDINIUM. 221 the average survival times of each and the differences between these averages. The difference is also plotted in Fig. 2, curve A. These results demonstrate that in the same environment the differences in survival time of the sisters do not increase but. FIG. 2. Didininm. Survival time of Didinia in KCN. Summary of Tables IV. and V. The abscissa represents time in hours between division and death of Didinia. The ordinate represents survival time in minutes. Curve C represent
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TOXIC ACTION OF KCN ON PARAMECIUM AND DIDINIUM. 221 the average survival times of each and the differences between these averages. The difference is also plotted in Fig. 2, curve A. These results demonstrate that in the same environment the differences in survival time of the sisters do not increase but. FIG. 2. Didininm. Survival time of Didinia in KCN. Summary of Tables IV. and V. The abscissa represents time in hours between division and death of Didinia. The ordinate represents survival time in minutes. Curve C represents the average survival time of fed Didinia. (See Table IV, C.) Curve £ represents the average survival time of the starved sisters of C. (See Table IV., E.) Curve D represents the difference between the average survival times of fed and starved sisters. That is, it is the difference between C and E. (See Table IV., D.) Curve A represents the difference between the average survival times of the less and more resistant sisters, when both are starved. (See Table V., A.) if anything decrease with time; i. e., the cells tend to become more alike in their resistance to KCN, and therefore the large difference shown in experiment IV. must be due to the food one has eaten while the other has starved. Table V. shows that the difference in survival time at one half and one hour is greater than at any subsequent time. This is explained by the fact that division in Didinium is often unequal, one sister evidently con- taining more food in vacuoles than the other. As this food is used up by the cell the difference in survival time becomes less. (See experiment VI. below.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). A
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
