PAPERS ON BIOLOGY AND AGRICULTURE 129 



of two directions, there is a smaller shifting of the mean 

 quintile positions in the intermediate quintiles than in 

 Quintiles I and V. From the preceding facts it appears 

 that seedlings which are small at first frequently surpass 

 in growth, larger ones of equal age. 



Let us consider now the specific gravity and the size of 

 the seeds from which these 75 seedlings grew. Of the 15 

 seedlings which started as the smallest. Quintile I, (Table 

 50), 7 are from small seeds, 1 from a medium and 7 from 

 large seeds. The 2 seedlings which remain in Quintile I on 

 the last day are from small seeds, the 4 in Quintile II are 

 likewise from small seeds. The seventh seedling from small 

 seeds which started in Quintile I is from a seed of Density 

 3 and is the smallest seedling of Quintile III. Of the 3 

 seedlings which, starting in Quintile I, reach Quintile V, all 

 are from large seeds; the 2 largest in this case, are from 

 seeds of Density 3, the third from a seed of Density 5. The 2 

 seedlings in Quintile IV are also from large seeds. The seed- 

 ling from the medium seeds is in Quintile III. Of the 16 

 seedlings which start in Quintile II (Table 51), 10 are 

 from small, 5 from medium and 1 from large seeds. The 

 6 seedlings which fall back into Quintile I are all from 

 small seeds. The 1 which reaches Quintile IV is from a 

 large seed. In Quintile III, (Table 52), 7 of the original 

 17 are from small, 8 are from medium and 2 from large 

 seeds. The 3 seedlings which, starting in Quintile III re- 

 cede to Quintile I, are from small seeds. The 4 ending in 

 Quintile II are also from small seeds. Of the 5 which end 

 in Quintile V, 1 is from a large seed, the other 4 from med- 

 ium seeds. The second seedling from large seeds starting 

 in Quintile III falls just below Quintile V. All of the seed- 

 lings which start in Quintile IV (Table 53) are from med- 

 ium seeds. Of the 5 which reach Quintile V, 2 are from 

 seeds of Density 1 and 3 from those of Density 3. Ten of 

 the 15 seedlings which start in Quintile V, (Table 54), are 

 from medium seeds, the other 5 are from small seeds. On 

 the last day, 3 of those from small seeds are the seedlings 

 in Quintile I, the other 2 are in Quintile II. Of those which 

 remain in Quintile V, 1 is from a medium seed of Density 

 1, the other is from a medium seed of Density 3. 



