CLARK: CYTOLOGY OF CARCINOMA. 223 



Fig. 10. Cell Nest 8, A. 

 Tier. 1 2 3 i 5 6 7 8 9 10 11 Av. D.D. I.D. Cells. 



Direct D. . 1 . 1 3 . . 2 1 . . . . 5.4 8 



Indirect D. 2 4 4 1 2 2 3.2 . . 15 534 



Fig. 11. Cell Nest 8, B. 



Direct D. . 1 2 3 2 . 1 4.1 9 



Indirect D. 1 4 4 3 1 2 3.3 . . 15 511 



Fig. 12. Cell Nest 8, C 



Direct D. . 1 1 1 5 1 3 2 1 .... 5.7 15 



Indirect D. 7 3 3 3 2 14 1 3.5 .. 24 554 



Fig. 14. Cell Nest 8, C. 



Direct D. . 1 2 2 2 2 . 1 4.6 10 



Indirect D. 2 2 2 5 2 1 1 1 4.0 . . 16 555 



Cell Nest 8, D. 



Direct D. 1 2 . 1 2 3 2 5.1 11 



Indirect D. 3 1 3 3 4 1 1 3.6 . . 16 626 



Subnest 8, D. 



Direct D. ... 1 1 4.5 2 



Indirect D. 3 5 1 1.7 . . 9 172 



Cell Nest 8, E. 



Direct D. . 1 2 2 3 2 ,1 4.9 11 



Indirect D. 4 3 7 4 4 3.0 . . 22 869 



Cell Nest 8, F. 



Direct D. . . 3 2 6 2 3 5.0 16 



Indirect D. 3 5 3 2 2 2 3.0 . . 17 745 



Fig. 16. Cell Nest 8, G. 



Direct D. . 2 3 1 3 4 1 1 4.7 15 



Indirect D. 2 6 2 1.11 2.8 .. 13 916 



Fig. 18. Cell Nest 8, H. 



Direct D. 1 2 3 1 . 3 3 4.3 13 



Indirect D. 3 1 7 1 .. 2 . 1 .... 3.5 . . 15 907 



Fig. 19. Cell Nest 8, I. 



Direct D. 1 . 2 1 2 . 1 3 . . . 1 5.7 11 



Indirect D. 1 1 7 2 4 1 1 3.8 . . 17 912 



No. of cells. Direct divisions. Indirect divisions. 



7301 121 179 



Percentage of cells in division 4.01 



" of cells in direct division 1.60 



" of cells in indirect division 2.40 



" of divisions which are direct 40.33 



" of divisions which are indirect 59.66 



The direct divisions of this nest averaged 1.78 rows nearer 

 the center than the indirect. 



2-Univ. Sci. Bull.. Vol. V, No. 12. 



