53 



The course of the germination has been faster and easier during 

 recent years where the seed has been good; this is shown by the 

 following best and worst results obtained: 



The system hitherto followed by our Danish Seed Testing In- 

 stitution of reporting the course of the germination at intervals 

 of 5, 10, 20, 30 days has been excellent and instructive, but, as 

 mentioned before, I think a 7, 14, 21 days period would be a small 

 step forward, and Alnus and Betula would then be among those 

 species the testing of which could be brought to a close after 14 

 days. 



The season 1911-12 gave besides, a good example of how incor- 

 rect it is to judge seed only by the price at which it is offered 

 per kilogram. If the prices of the following samples of Birch 



seed per kilogram germinating capacity and per kilogram real 



(PxK\ 

 . fl0 I are calculated, the following results are obtained: 



Germinating Price per Gives price per kilo 



Purity Capacity kilo seed Germ. Cap. Real value 



Danish Seed 1 ...... 36.5 72.0 1.35 1.88 5.13 



II ..... 34.0 80.7 1.35 1.67 4.93 



Norwegian Seed . . . 30.5 66.0 1.50 2.27 7.46 



Swedish ... 29.5 49.7 1.20 2.42 8.16 



Dutch ... 29.0 18.7 1.00 5.35 18.52 



Thuringian ... 19.5 9.0 1.00 11.11 55.55 



Hessian 25.0 4.0 1.00 25.00 100.00 



