434 



T. VOKOr. 



Thus it may be seen that as to cereals weight and specific 

 gravity have a certain relation with each other and grains with a 

 higher specific gravity are generally also heavier. Ando has 

 proved this for rice by weighing each grain and counting the 

 number of grains of similar weights within a certain space as 

 shown in the following table : — 



RICE: Sr)RT, SHIRATAMA. 











Xumber of 



grains. 













Helow . 

 20 



20 — 22 



22 — 24 



24 — 26 



26—28 



28 



—30 



1O— 32 



32—34 



34 



-36 



56-38 



i.oo — 1.03 



1. 15—1.16 



1.20 — 1. 21 



Over 1.235 



28 

 0 



0 

 0 



39 

 2 

 0 

 0 



16 



3 

 0 



0 



3 



16 



0 

 0 



7 



26 

 12 



3 



2 



£7 

 16 

 10 



5 



21 

 41 



5£ 



0 

 5 



29 

 23 



0 

 0 

 2 

 7 



0 

 0 

 0 

 2 



SORT ; SEKITORI. 



1.00— 1.03 



4£ 



26 



I 2 



') 





.s 



I 



I 



0 



0 



I.I5 -I.I6 



I 



3 



14 



30 



29 



8 



5 



I 



0 



0 



1.20 — 1. 21 



0 



I 



5 



30 



27 



28 



7 



0 



0 



0 



Over 1.235 



0 



0 



0 



7 



23 



20 



32 



6 



5 



0 



Thus it may be seen that the seed with a higher specific gravity 

 contains a larger number of heavier grains, and if v\ e take those 

 grains which sink in a solution with a high specific gravity as for 

 example in the case 1.2 1, and reject those grains which float on it, 

 then surely we shall obtain the largest and best grains. 



So far v/ith Ando's results. In this direction Y. Ida, 

 another student of our college, has also examined various sorts of 

 rice and made elaborate experiments in our laboratory in 1896. 

 His results are embodied in the following table, which shou-s the 

 distribution of grains of various weights under each fixed specific 

 gravity. The number of grains is shown in percentage. 



