G, L. KOTTUR 



237 



fact, that a long middle lobe is dominant over a short one, and a broad lobe is 

 dominant over a narrow one. A strain bearing leaves with long and narrow 

 lobes was crossed with another bearing short and broad lobes. In the Fi 

 generation all the plants had long and broad lobes. In the P^ generation a 

 splitting occurred, givmg plants in the proportion of twenty-seven plants with 

 long and broad lobed leaves, nine plants with long and narrow lobes, nine 

 plants with long and broad lobes, and three plants with short and broad lobes. 

 This would seem to suggest the unwisdom of combining the measurements 

 of length and breadth into one factor. ,1, therefore, submit the actual 

 measurements of leaves (selected as above described) from one thousand plants 

 in one field, grown under identical conditions of climate, soil, manure and 

 cultivation. 



Breadth of central leaf lobe. 



Breadth of central lobe in 

 millimeters 



Mumber of times occurring 

 (" Frequenc}'") 



27 — 30 

 30 — 33 

 33 — 36 

 36 — 39 

 39 — 42 

 42 — 45 

 Over 45 



61 

 198 

 271 

 252 

 128 

 71 

 19 



Total 



1,000 



Length of central leaf hhe. 



Length of central lobe in 

 millimeters 



Number of times occurring 

 (" Frequency'") 



39 — 42 

 42 — 45 

 45 — 48 

 48 — 51 

 51 — 54 

 54 — 57 

 57 — 60 

 60 — 63 

 63 — 66 

 Over 66 



22 

 21 



77 

 250 

 158 

 222 

 120 



62 

 9 



39 



Total 



J, (KM) 



