234 A Biometrical Study of Conjugation in Paramecium 
Series A. August 15th — 18th. 
ItO 11^ 150 15b 160 165 170 175 180 165 190 195 ZOO 205 210 215 220 225 ZiO 235 2W 2t5 , 250 255 2 60 2 60 2 70 2 7 5 2 80 
Length 
Series C. August 24th— 26th. 
H 
i 
7 
\/ 
c 
a 
CI 
SI 
-J 
c 
il 
c 
o 
fc: 
Ol 
1 
1. 
N ' 
KO M5 150 155 160 165 170 175 leo 185 190 195 200 205 210 215 220 225 230 i35 240 2't5 250 255 260 266 2T0 275 280 
Diagram I. Frequency polygons for variation in length in Series A, C, D and E. Continuous lines = coDiugants. 
Dotted lines = non-con jugants. On the left margin are given the scales of frequency for the continuous line 
polygons, and on the right margin those for the dotted line polygons. 
