446 



KOBANASIII. 



Thus, in the Chosen rape, seeds of the specific gravity 1.105-1.085 

 had the greatest absohite weight and the results were about the 

 same both with Okuna and Hamburg rape. It is interesting to 

 compare my figures with those of Wolhiy which are very similar, 

 and are as follows : — 



Weii^ht of 100 grains. Specific gravity. 



Heaviest rape seed. 0.554 gram. I 0593 



Medium ,, ,, 0.429 1.1004 



Lighest 0.336 I.I 141 



As has been proved by several investigators the heaviest seeds 

 are the best, and if this rule also holds good with rape, which is 

 cultivated for oil we must select those having a medium specific 

 gravity viz., those with the greatest absolute weight ; and it will be 

 very interesting in this connection to know whether the oil content 

 of rape seed has any relation with specific gravity or not. 



II. The Relation between the Absolute Weight and 

 Specific Gravity of Rape Seed and its Germination. 

 The experiments under this category were carried out with 

 reference to the following three points : — 



a. ) Relation of the specific gravity of seed to its germination. 



b. ) Relation of the absolute weight of seed to its germination. 



c. ) Relation of the different absolute weight of seeds arranged 

 in a series according to specific gravity to their germination. 



The seeds employed for experiments were divided into four 

 groups of different specific gravities, as follows : — 



1. ) Seeds of specific gravity 1.125 & more 



2. ) ,, ,, ,, 1. 105— 1.085 

 3-) M 5. 1.065— 1.045 

 4.) ,, „ ,, ,, 1.025 & less 



a.) Relation of the Specific Gravity of Seed to its 

 Gemination. 



The rape seeds used in this experiments were of five sorts : 

 Chosen, Okuna, Hiroshima, Colza and Hamburg. They were 

 germinated in a germination apparatus, all under the same condition. 

 The germinative energy and germination percentage observed were 

 as follows : — 



