STATISTICAL BIOLOGICAL STUDY. 69 



Lot. A a C 



Pseudocyltia, num. radial canals 5.004 .094 0.441 8.81 



lips 4.868.012 0.556 11.4 



Protista. 



Paramecium recently divided, Simpson, '02; seriation of 

 diameter of Actinospherium and number of cysts and nuclei 

 in body, Smith, '03; outer and inner diameters of shell of 502 

 Arcella vulgaris, Pearl and Dunbar, '03; the diatom Syndes- 

 mon, polygon varies with season and year, Kellerman, '01; 

 other diatoms, Schroter and Vogler, '01. 



Lot. A a C 



Paramecium, length /i 229.05 19.15 8.36% 



breadth 68.13 9.16 13.44 



index 29.91 4.03 



Arcella, outer diameter 55. 79 .17 5. 73 .12 10. 27 .22 



inner diameter 15.91.07 2.17.05 13.66.30 



Plants. 



GENERAL. Multimodal polygons especially frequent in 

 plants, Ludwig, '97; critical, Lee, '02; Pearscn, '02 h . 



RAY-FLOWERS IN COMPOSITE.- -Seriation of ray-frequency 

 of Coreopsis, de Vries, '94; of Senecio nemorensis, S. fuchsii, 

 Centurea cyanus, C. jacea, Solidago virga aurea, Achilla mille- 

 folium, Ludwig, '96; ray-frequency in Chrysanthemum, 

 Ludwig, '97 C , Lucas, '98, Tower, '02, Pearson and Yule, '02; 

 Helianthus, Wilcox, '02; Bellis perennis, Ludwig, '9S b ; Soli- 

 dago serotina, Ludwig, '00 b ; Arnica montana, Ludwig, '01; 

 Aster, Shull, '02. 



Num. Ray-flowers. A a C 



Aster shortii 14.000.068 1.526.048 10.90 



A. novje-angliae 42.874.302 6.308.213 14.71 



A.punicens 36.672.107 4.480.076 12.22 



A. prenanthoides 28.080.107 4.070.077 14.52 



OTHER SERIATIONS OF FLORAL^ ORGANS : Ranunculacece. 

 Petals, Ranunculus bulbosus, de Vries, '94, Pearson, '95; 

 calyx, coralla, stamens, and pistils of Ficaria verna, Ludwig, 

 '01; number of Ficaria pistils, early flowers, A =17.448, o= 

 3.89; late flowers, A = 12.147, <r=3.88; number of stamens, 

 early, A = 26.731, a= 3.761 and late, A = 17.863, G= 3.298, 



