F. KiDD AND C. West 



19 



being due to the more vigorous stem and leaf development of the 

 experimental plants. The results also show that the superiority of the 

 plants from the treated seeds is evident from the beginning of their 

 develo])nient. 



Table XIII. 



ExperitnenLs with equal weights of Irealed and untreated seeds 

 sown "en pleine terre^ 



Maize seed used in each experiment. 



No. of 

 expt 



T 



11 



111 



IV 



V 



Seeds 

 (Treated 

 (Control 

 (Treated 

 (Control 

 (Treated 

 (Control 

 (Treated 

 (Control 

 (Treated 

 ^Control 



Fresh weight in kilograni,< 

 after 100 days' growth 



Weight of the aerial parts of 



the plants from treated seeds, 



that of the control plants 



being taken as 100 



_ _ __ -A . 



Entire yield 

 0-7(i5 

 0-5«5 



;moo 



2-500 

 4-200 

 .3 -WO 

 2-000 

 2-700 

 -1-000 

 3-500 



Duration 



of ex- 

 periment 



Kind of seed 

 Wheat "Bordeaux" 



Wheat "Battel" • 



^Vheat "Japhet" 



Wheat "Bordier" 



Wheat "Saumur" 



Oats "Houdan" 



Oats "Brie" 



Barley 



Maize "Gros jaune" 



Maize "Dent de cheval" 



days 



25 

 52 

 20 

 40 

 20 

 40 

 2.3 

 37 

 20 

 27 

 28 

 23 

 50 

 32 



Heads 

 0-270 

 0-185 

 0-920 

 0-710 

 l-2!)5 

 0-870 

 0-015 

 0-545 

 0-605 

 0-500 



Table XIV 



Dry 



weight in 



grams of 



the seeds 



sown 



88 

 88 

 87 

 87 

 89 

 89 

 87 

 87 

 88 

 87 

 89 



no 



89 

 89 



Entire jdeld 

 137 



120 



107 



74 



114 



Dry weight in grains 

 of yield from 



Untreated Treated 

 seeds seeds 



60 

 45 

 77 

 65 

 77 

 60 

 74 

 60 

 75 

 70 

 67 

 62 

 72 

 73 



72 

 66 

 81 

 75 

 80 

 67 

 76 

 69 

 83 

 78 

 82 

 70 

 80 

 81 



Heads 

 146 



129 



148 



112 



121 



•^'o difference 

 in yield in 



favour of the 

 plants from 



treated seeds 



20 

 46 



5 

 15 



4 

 11 



2 

 16 

 10 

 11 



7 

 14 

 11 

 10 



Beyond the really important fact thus brought out that the final 

 result can be forecasted at a very early stage in the development of the 



2—2 



