18 



Germination in per cent after 5 10 20 30 40 days 



189697 29 55 



189798 55 60 



189899 50 56 



18991900 40 46 



190203 24 37 37 37 



190304 1 2 3 3 



190304 II 1 2 



190304 III 14 21 



1906071 15 17 17 



190607 II 14 28 32 



190910 1 1 20 25 



190910 II 7 10 



THE SPRUCES - - PICEA 



THE COMMON SPRUCE PICEA EXCELSA. The seed of this 

 species was always easily caused to germinate, provided the seed 

 was good, as it generally is. For this reason, no improvement or 

 alteration in the course of germination is to be found, when the 

 figures of the earliest years are compared with those of the most 

 recent. Even in the first few years the seed-testing establishment 

 was able in 10 days to obtain a germination of 80 90 %, and it 

 is the same to-day. At first the test was carried on, as was usual, 

 for 30 days, but about 20 years ago we began to stop sooner. This 

 is evident from the germination results which are here extracted 

 (with 5-yearly intervals) from the 57 Mid-European samples. 



Germination in per cent after 5 10 20 days 



189495 86 89 



189596 I 48 70 



189596 II 90 93 



189596 III 83 86 



18991900 1 40 85 88 



18991900 II 90 91 



18991900 III 40 (+0) 



190405 1 19 87 91 



190405 II 44 69 79 



190910 1 7 78 85 



190910 II 36 86 88 



190910 III . 15 78 85 



