FURTHER NOTES ON TREE SEED-TESTING. 



411 



the same time at a temperature of 82° F. P. Strobus, for 

 instance, when kept at that temperature, had only germinated 

 34 per cent, in 175 days, whereas 98 per cent, hnd germinated 

 during the same period when the seed was kept in the cold 

 verandah. P. Cembra sibirica had in 45 days germinated respec- 

 tively 48 per cent, and 82 per cent. ; Nordmanniana respectively 

 6 per cent, and 28 per cent. ; whereas Danish seed of Thuja 

 gigantea germinated 85 per cent, in the heat but only 49 per 

 cent, in the cold. 



These last tests have not been carried out nor suggested by me, 

 but were started by the Danish Government, at their seed-testing 

 establishment in Copenhagen, with seed which I placed at the 

 disposal of the establishment at the request of the director. 



COMIFERS. 



The Samples contained 

 per cent. 



Of the Pure Seeds there 

 Germinated : 



Inanavrge. temp, 

 of 77 = -82° F. 



10 

 days. 



15 30 

 days. days. 



Abies balsamea, Mill., Danish seed, . 



ceplialonica, Lk. , .... 

 cephalonica, var. Regince Amalice, 

 from Arcadia, .... 

 concolor, Lindl., Colorado seed, 

 grandis, Lindl., ,, ,, 



nobilis, Lindl., Scotch ,, 



,, glauca, Uort. Scotch seed, . 

 Nordmanniana, Lk., 



Pinsapo, B)iss. 



sibirica, Ledeb., Seed from Ural, 

 subalpina, Engelm., .... 

 Chamcecyparis lawsoniana, Pari., Dauish 

 seed, .... 

 ,, obtusa, S. and Z., 1899 crop, 



Japan, .... 

 ,, obtusa, S. and Z , 1900 crop, 



Japan, .... 



,, pisifera, S. and Z., 1899 



crop, Japan, . 



Larix europcea, D.C., Alpine seed, . 



,, leptolepis, Murr., 1900 crop, Japan, 



,, sibirica, Ledeb., Lot. 1, Seed from 



Ural, 



,, sibirica, Ledeb., Lot 2, Seed from 



Ural, 



Libocedrus decurrens, Torr., 



0-32 



171 

 P10 



)-40 



l : 43 

 2-36 

 1-65 

 0-34 

 0-41 



08 



0-13 

 0-41 



0-36 



0-80 



5-00 95-00 47-50 .. 



% - 7o i % 



47-50 2000 33-66 50-00 45-00 

 ,. 110-00 44-00 



13-00 87-00 48-72 5-22 



1-00 99-00 30-63 ... 



1-9098-10 45 45 ... 



4*00 96 '-00 5472 '..'. 



14-5085-50 77-38 ... 



6-90 93-10 60-52 ... 



9-50 90-50 62-90 ... 



6-50 93-50 83-63 ... 



6-00 94-00 3870 ... 



13-2086-80 ... ... 



34-00 66-00 63 -69 ... 



3-50 96-50 6273 5-79 



0-10,99-90 78-90 ... 



20-00,80-00 68-40 ... 



33-06, 2 

 68-3134 

 52-65 26 



19-00|38 



65-33I69 



35-50 53 



6 0014 



43 



41-28, 5 

 8-12 



32-58 5001233 

 27-6018 



9-82 2 



55-93 42 67 



39-90 36-00 

 2-31 1-17 



27 -9S 6-00 

 11 : 60 7 : O0 



30 -50 . 

 6-6610 



00 34-00 

 00 68-00 

 67, ... 

 00 6-00 

 00 22;00 

 50 28 00 

 00 ... 

 . 24-00 

 50 ... 



... 59-50 43 00 

 6-00 7-00 7-00 



1-00 

 •0 



•o 



46-00 34-00 

 3-50 1-00 



20-30 



21-00 ... 

 14-50!24-00 



i For deSnition of "Real Value," see p. 278 of this volume. 



