3 82 



BOTANICAL GAZETTE 



[may 



in attempts to reduce 



biological phenomena to 



mathematical 



expressions (see table XIV). 



The velocity of intake at the same six percentages used for the 

 Xanthiam seeds has been calculated from the tangents to the 



curves. The velocity in percentage per minute, and the logarithms 

 of the velocities are shown in table XV. 



Water int. 



TABLE XV 



i* Small Scotch Yellow split pea 



Intake 



percentage 



y= 7.5 



y— 10. . 

 y=2o. . 



y=2$-. 



ft ■■ ' ■ ' Ml ■ ' ' ■ ■ ■ ■ ' 



s' 



Velocity in 

 percentage 

 per minute 



I .32160 

 I- O9175 

 O.90188 

 O.61546 

 O.42000 

 O.28662 



Logw velocity 



O . 1 2 1 1 OO 

 O.038122 



I. 955148 

 I . 789200 



I.623249 

 I.457306 



20' 



Velocity in 

 percentage 

 per minute 





Logio velocity 



3-05728 

 2.58846 

 2.19152 

 I. 57091 

 I. I 2605 

 O.80717 



0.485335 

 O.413041 



0.340745 



o. 196151 



0.051558 



1.906965 



35° 



Velocity in 

 percentage 

 per minute 



3 • 76544 



3 42593 

 3. 1 1692 



2 . 58002 



2. .13562 



i.7 6 775 



Log« velocity 



0.575827 



0.534779 



0.493725 

 O.411623 



O.329524 

 O.24742I 



intake 



XV, and are nresented in table XVI 



TABLE XVI 



Ratios of intake velocities; Small Scotch Yellow 



split PEAS 



Intake percentage 



Velocity 20 

 Velocity 5 



Velocity 35 

 Velocity 20 



y= K 



2.31 



2-37 



2.43 



2-55 

 2.68 



2.82 



I.23 

 I.32 

 I.42 

 I.64 

 I.90 



2. 19 



v= 7.5 



v = IO 



r=l5 



y = 2o 



y=25 





Mean ratio 



2.53 



1.62 



find that the value of Q I0 in this 



1.6, or just a little higher than 

 Xanthium. Since the calculations 

 made from single equation curves. 



determination 



