112 PRACTICAL FORESTRY 
treme abundance of European weeds in this country. 
Johannes Rafn claims that the real value of seeds as 
tested by him varied as follows: Abies concolor, Ore- 
gon seed, four tests, real value 7.92—50.42 per cent. 
Colorado seed, seven tests, real value 14.34—-60.58. 
Abies pectinata, ten tests, real value 5.68-68.16. 
Chamaecyparis lawsoniana, five tests, real value 
7.10—28.48. Larix europaea, seed from the Alps, 
nineteen tests, real value 17.70-56. Picea alba, 
Danish seed, twenty-six tests, real value 10.84-91.09. 
Picea excelsa, Tyrolese seed, thirteen tests, real value 
61.19-90.37. German seed, six tests, real value 
67.48-90.38. Danish seed, four tests, real value 
44.62-76.32. Swedish seed, twelve tests, real value 
73.33-97.61. Norwegian seed, four tests, real value 
55.16-86.91. Finnish seed, five tests, real value 
65.35-97.71. Picea excelsa borealis, Norwegian 
seed, grown north of the arctic circle, five tests, real 
value 43.25-94.55. Picea sitchensis, fourteen tests, 
real value 16.50-79.12. Pinus sylvestris, Scotch 
seed, eleven tests, real value 41.12—95.62. Swedish 
seed, five tests, real value 91.98-97.71. Finnish seed, 
seventeen tests, real value 38.45—-92.84. Pinus stro- 
bus, Tyrolese seed, four tests, real value 63.80-86.44. 
German seed, eight tests, real value 52.40-86.40. 
American seed, two tests, real value 62.78—93.70. 
Pseudotsuga taxifolia, Oregon seed, four tests, real 
