BEET SEED PRODUCTION IN FEAXOE. 245 



M. Vivien at the Desprez laboratory had a very- 

 simple way of calculating results. We may take his 

 example and admit that loo kilos of seed contain: 



»o on , •. , ^ lOO Kilos. 



Ja.29 kilos large seed oorresponaing to 1,311,000 seed. 



73.67 " small seed " " 6,2B2 000 " 



4.04 impurilies i 



1UI)..I0 



Moisture is found to be 8.75 kilos. 



Average weight per seed .... i Large seed 0.017 grams. 



1 Small seed 0.014 " 



And that the germination was upon four grams of seed, an average 

 sample: 



13.11x4=52 large seed weighing.... 0.89 grams. 

 62.62x4=211 small " " ....2.95 



Together 3.84 grams without impurities. 



Thesel seeds are placed in germinators ( *^ °' *^^ large seed germinate. 



( 182 of tlie small seed germinate. 

 Consequently, In 100 seed 92.3 per cent, of large germinate. 

 86.24 " " small 



The germination per 100 kilos is ( 22.29x92.3=20,57 kilos large seed. 



*^ 1 73.67x86.1M=63.53 " small " 



The bulletin then becomes 20.57 kilos large seed germinated. 

 63.63 " small " " 



11.83 " dead seed. 

 4.04 impurities. 



100.00 



Remarks. — If the number of seeds had been con- 

 sidered instead of the weight, and if a proportional 

 amount of small and large seed had been taken, then 

 92.3 X 22.29 + 86.24 X 73-67 -^ 95-96 = 87.65 per 

 cent, would have apparently germinated; when, in real- 

 ity, this would have been but 84.100 kilos of seed ger- 

 minating in 100 kilos, showing again the importance of 

 estimating by weight and not by number. 



It is also important to note that certain German 

 authorities claim, with a certain reason, that allowance 

 must be made for the number of seeds as well as the 

 weight. Under these circumstances, it is proposed to 

 multiply the germinating faculty of 100 seeds by the v 

 number of seeds contained in the unit weight and 

 divide the result by 100. For example, if 100 seeds 

 gave 125 sprouts and had a purity of 98.5 per cent., 

 the old method would give 125 X 98.5^:123.12 per 



