33 



Germination in per cent after 10 20 30 60 days 



Danish seed 190405 70 74 74 77 



190304 20 35 35 



American seed 18991900 12 34 



Italian seed 190910 31 54 



188788 7 7 



German seed 190708 19 43 



CHAM^CYPARIS NUTKAENSIS. Of this hardy and valuable 

 species I have unfortunately never succeeded in obtaining seed of 

 even moderate quality; as a rule it is quite worthless. Occasionally 

 it germinates one or two per cent thus: 



Danish seed 188990 30 days 1 % 



American seed 18991900 30 2 



Year by year I attempt to get seed of this species from its na- 

 tive home, but without success; so that our only consolation is that 

 this fine Cypress is fairly easily propagated by cuttings or layers. 



CUPRESSUS MACROCARPA from California unfortunately al- 

 ways germinates very indifferently: as appears from the Table 

 on p. 68, the mean real value of the 11 samples over a number 

 of years only amounted to 10.7; highest germinating capacity 23.4, 

 lowest 2.1 %. 



LARIX AMERICANA and L. OCCIDENTALS are both seeds 

 difficult to obtain. I have only twice, during the whole twenty- 

 five years, received from Canada, seeds of the East American 

 Tamarack, L. Americana, capable of germination; and in 1912 I 

 saw for the first time seed from the West American species L. 

 occidentalis. The seed germinated as follows: 



Germination in per cent after 5 10 20 30 40 days 



Larix americana 1904 05 . . 1 5 11 



190910.. 14 39 



occidentalis 191112. 26 42 50 57 65 



THE AMERICAN SPRUCES - - PICEA 



CANADIAN WHITE SPRUCE PICEA ALBA. As in the case 

 of Abies balsamea, A. nobilis and C. Lawsoniana, Danish seed of 

 this species is also larger and of better germinating capacity than 

 Canadian and American seed. The lowest and highest found seed 



