1920.] NATURAL SCIENCES OF PHILADELPHIA. 335 



Changing these figures to percentages we obtain : 



Table 6. 



Cow 1031 



Heart 35.46 60.16 2.16 2.22 



Kidney 81.89 17.49 .31 .31 



UvGT 90.34 9.66 



Cow 1025 



Heart 35.73 60.17 1.41 2.35 .23 .11 



Totals 53.51 43.61 1.29 1.51 .05 .03 



If Table 6 be compared with Table 4 it will be observed that there 

 is a quite close accord so far as Cow 1031 is concerned. With regard 

 to Cow 1025, howTver, there is a noticeable smaller percentage of the 

 single forms. It is also to be noted that whereas in Table 3 there are 

 a good many more parasites in the three stage than in the four, that 

 this is reversed in Table 5. 



Finally, as regards the numl^er of parasites in each group, Tables 

 7 and 8 combine lioth those present in the cells and those which were 

 apparently free. 



Table 7. 



Cow 1031 1. S. .1. 4. fj. 0. Total 



Heart 4160 6411 285 190 4 1 1 1051 



Kidney 2281 528 24 9 2842 



Liver 2634 343 10 4 2991 



Spleen 1301 85 2 10 1389 



Cow 1025 



Heart 1621 1906 41 42 2 1 3613 



Totals 11997 9273 362 246 6 2 21886 



Reducing to the usual percentages we get: 



Table 8. 



Cow 1031 ■ 1. 2. 3. Jt. 5. 6. 



Heart 37.64 58.01 2.58 1.72 .04 .01 



Kidney 80.26 18.58 .84 .32 .0 



Liver." 88.07 11.47 .33 .13 



Spleen 93.67 6.12 .14 .07 



Cow 1025 



Heart 44.87 52.75 1.13 1.16 .06 .03 



Totals 54.82 42.37 1.65 1.12 .03 .01 



The percentages of Table 8 run very close to those of both Tables 

 4 and 6, whjch was of course to be expected. It may be of interest 

 to note that of nearly twenty-two thousand cases there were only 

 six groups of five and two groups of six. 



