442 



JENNINGS— HEREDITY IN PROTOZOA. 



[April 24, 



Table XII. 

 Correlation Tabic for Depth of Constriction and Breadth of Body, in 313 Di- 

 viding Specimens from a Single Culture of Descendants of D. 



(Same lot shown in Tables XL, XIII. and LXII.) 

 Breadth in ^Microns. 



131 

 37 

 30 

 29 

 12 

 16 

 22 



17 



O 3^ 2 2 4 2 10 



o 



Breadth— Mean, 52.026 ± .209M Depth of Constriction — Mean, 13.265M 



St. Dev., 5.473 ± .148ft St. Dev., 2.721^ 



Coef. Var., 10.544 — -287 



Coef. of Cor. between Depth of Constriction and Breadth, — .5232 ± .0277; 

 Decrease in Breadth with Increase of lOM in Depth, 2.630M. 



Omitting uppermost row: Coef. of Cor., — .3316 ± .0445M; Decrease in 

 Breadth with Increase of iom in Depth, 1.252M. 



Table XIII. 



Correlation Table for Length and Breadth of 131 Specimens of Lot i in the 

 Earliest Stages of Fission. (Descendants of D, Table X., row 25.) 



Length in Microns. 



156 160 164 168 172 176 180 184 188 192 196 200 204 



o 44 

 t3 48 



.= 60 



:S 64 



■a 68 



<u 72 



CQ 



Length — ]\lean, 



St. Dev., 

 Coef. Var., 



175.696 ± .556M 



9.432 ± .393M 

 5.368 ± .224, 



Breadth — Mean, 



St. Dev., 



2 



19 

 27 

 47 

 22 

 II 



2 



I 



131 



55.480 ± .297M 

 5.040 ± .210/* 



Coef. Var., 9.082 ± .382 



Mean Index, 31.568 per cent.; Coef. Cor., .6546 ± .0337. 



